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Bienvenue pour rejoindre notre marché international de plus en plus grand, des bijoux et des pierres précieuses de haute qualité sont fournis, mais nous avons également étendu le marché aux spécialités de tous les pays avec lesquels nous avons collaboré.

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WELO OPAL OVAL SHAPE FACETED SERIES GCA GEMS CREATION ART

CRISTAL SOLIDE OPALE WELO Facetté 2,095 cts

SKU : WLOPL21NCOV03-GCA

139,00 €

TVA Incluse |

Opale naturelle « extraite de manière éthique »

De l'Éthiopie « Welo Mines »

2,095 carats

Uniquement des opales de qualité supérieure sélectionnées par GCA™

SÉRIE À FACETTES DE FORME OVALE

Quantité

Il ne reste que 1 article(s) en stock

Essuyez délicatement avec un chiffon microfibre doux et sec. Pour un nettoyage en profondeur, utilisez un chiffon doux imbibé d'eau chaude savonneuse, rincez abondamment et laissez sécher complètement à l'air libre. Évitez le trempage, les produits chimiques agressifs et les nettoyeurs à ultrasons.
Cette pierre précieuse n'est actuellement pas certifiée. Un certificat peut être fourni sur demande.

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💎 Gemstone Care Guide

🧼 General Cleaning Instructions:

Use warm soapy water and a soft brush
Rinse thoroughly and dry with a soft cloth
Avoid harsh chemicals and ultrasonic cleaners

⚠️ Special Care for Different Stones:

Soft Stones (Opal, Pearl, Turquoise): Extra gentle cleaning, avoid temperature changes
Hard Stones (Diamond, Ruby, Sapphire): Can handle more vigorous cleaning
Organic Gems (Amber, Coral): Avoid chemicals, use only mild soap

📦 Storage Tips:

Store separately to prevent scratching
Use soft pouches or lined jewelry boxes
Keep away from direct sunlight and heat

💎 Gemstone Care Guide

🧼 General Cleaning Instructions:

Use warm soapy water and a soft brush
Rinse thoroughly and dry with a soft cloth
Avoid ultrasonic cleaners for treated stones

⚠️ Special Care Notes:

Emeralds & Opals: Avoid harsh chemicals and extreme temperatures
Pearls: Clean with damp cloth only, store separately
Turquoise: Avoid water exposure, use dry cloth
Amber: Clean with soft dry cloth, avoid alcohol

📦 Storage Tips:

Store each gemstone separately to prevent scratching
Use soft pouches or lined jewelry boxes
Keep away from direct sunlight and extreme temperatures

🔬 Treatment & Certification Guide

🧪 Common Treatments

Heat Treatment: Enhances color and clarity (very common)
Oil/Resin Filling: Fills surface fractures (emeralds)
Irradiation: Changes or enhances color
Diffusion: Surface color enhancement
Fracture Filling: Glass filling of internal fractures
Coating: Thin film applied to surface

📜 Certification Bodies

GIA: Gemological Institute of America
SSEF: Swiss Gemmological Institute
Gübelin: Gübelin Gem Lab
AGL: American Gemological Laboratories
AGTA: American Gem Trade Association
Lotus: Lotus Gemology

💡 Important Notes

Natural vs Treated:
Always ask about treatments - they affect value and care requirements.

Certificate Importance:
Certificates verify authenticity, treatments, and quality grades.

Treatment Disclosure:
Reputable dealers always disclose all known treatments.

Care Considerations:
Treated stones may require special care to maintain treatments.

💎 At Gems Creation Arts, we provide full disclosure of all treatments and certifications for complete transparency.

⚖️ Gemstone Hardness & Durability Guide

📏 Mohs Hardness Scale (1-10)

10 - Diamond
Hardest natural material

9 - Ruby/Sapphire
Extremely durable

8 - Topaz
Very hard, good for jewelry

7 - Amethyst/Quartz
Good durability

6-6.5 - Opal
Moderate, needs care

2.5-4 - Pearl
Soft, very delicate

💪 Durability Factors

Hardness: Resistance to scratching
Toughness: Resistance to breaking/chipping
Stability: Resistance to chemicals/heat
Cleavage: Natural breaking planes

⚠️ Special Care Needed

Emerald: Brittle despite hardness 7.5-8
Opal: Contains water, can crack
Pearl: Organic, very soft and porous
Turquoise: Porous, absorbs oils

💡 Tip: Higher hardness doesn't always mean more durable. Consider toughness and stability for daily wear jewelry.

🏆 Certification & Treatment Information

📜 Understanding Certifications

GIA: Gemological Institute of America - Most trusted worldwide

SSEF: Swiss Gemmological Institute - European excellence

Gübelin: Premium Swiss laboratory for rare gems

AGL: American Gemological Laboratories

🔬 Common Treatments

Heat Treatment: Enhances color and clarity (very common)

Oil/Resin Filling: Improves clarity in emeralds

Irradiation: Changes color in some stones

Unheated/Natural: No treatments - premium value

✨ All our certified gems come with detailed treatment disclosure

🏆 Certification & Treatment Information

📋 Understanding Gemstone Certificates:

GIA: Gemological Institute of America - Most recognized worldwide
SSEF: Swiss Gemmological Institute - European standard
Gübelin: Prestigious Swiss laboratory
AGL: American Gemological Laboratories

🔬 Common Treatments:

Heat Treatment: Enhances color and clarity (very common)
Oil/Resin Filling: Fills surface fractures (emeralds)
Irradiation: Changes color through radiation
Diffusion: Surface color enhancement

✅ What to Look For:

Certificate number and authenticity
Treatment disclosure
Origin determination
Carat weight and dimensions

🏆 Certification & Treatment Information

📋 Understanding Gemstone Certificates:

GIA: Gemological Institute of America - Most recognized worldwide
SSEF: Swiss Gemmological Institute - Specializes in colored stones
Gübelin: Swiss lab known for origin determination
AGL: American Gemological Laboratories

🔬 Common Treatments:

Heat Treatment: Enhances color and clarity (very common)
Oil/Resin Filling: Fills surface fractures (emeralds)
Irradiation: Changes color through radiation
Diffusion: Surface color enhancement

✅ What to Look For:

Certificate number and lab logo
Treatment disclosure (if any)
Origin information (when available)
Detailed measurements and weight

🌍 Ethical Sourcing & Origins

✅ What We Verify

Mine of origin documentation
Fair labor practices
Environmental impact assessments
Community benefit programs
Conflict-free certification
Traceability chain of custody

🏔️ Premium Origin Locations

Kashmir Sapphires: Legendary blue color
Burmese Rubies: Finest red gemstones
Colombian Emeralds: Vivid green excellence
Ceylon Sapphires: Exceptional clarity
Padparadscha: Rare sunset sapphires
Australian Opals: Unique play of color

🔍 Certification Standards We Follow

Kimberley ProcessResponsible Jewellery CouncilFairmined CertifiedOECD GuidelinesUN Global Compact

🤝 Our Commitment

At Gems Creation Arts, we are committed to ethical sourcing practices that support mining communities, protect the environment, and ensure every gemstone in our collection meets the highest standards of social and environmental responsibility. Each purchase comes with full provenance documentation.

💎Sapphire Care Instructions

Cleaning Your Sapphire:

Safe to clean with warm soapy water and soft brush
Ultrasonic cleaners are generally safe for natural sapphires
Steam cleaning is safe for most sapphires
Professional cleaning recommended for valuable pieces

Durability Notes:

Hardness: 9 on Mohs scale (very durable)
Excellent for everyday wear
Resistant to scratches and chips

Special Care for Padparadscha:

Handle with extra care due to rarity
Professional cleaning recommended
Store in individual soft pouches

🏆 Certification & Authentication Guide

📋 Trusted Certification Bodies:

GIA (Gemological Institute of America): Most recognized worldwide
SSEF (Swiss Gemmological Institute): Specializes in colored stones
Gübelin Gem Lab: Renowned for origin determination
AGL (American Gemological Laboratories): Colored stone specialists

🔬 Common Treatments to Know:

Heat Treatment: Enhances color and clarity (very common, stable)
Oil/Resin Filling: Fills surface fractures (emeralds)
Irradiation: Changes color through controlled radiation
Diffusion: Surface color enhancement

✅ Certificate Verification:

Always verify certificate numbers online
Look for security features (holograms, watermarks)
Ensure stone matches certificate description
Check for recent certification dates

🏆Ruby Certification & Treatment

✅ Certification Status:

All our rubies come with professional gemological certificates
Certificates from recognized labs (GIA, SSEF, Gübelin)
Each certificate includes origin, treatment, and quality details
Look for "Certified" in product descriptions

🔬 Common Treatments:

UNHEATED: Most valuable - no thermal treatment
Heat Treatment: Standard enhancement to improve color/clarity
Fracture Filling: Glass filling of surface cracks (disclosed)
Diffusion: Surface color enhancement (rare, disclosed)

💡 What to Look For:

"UNHEATED" or "No thermal treatment" = premium quality
"Natural" indicates no synthetic origin
Origin information (Myanmar, Mozambique, etc.)
Always request certificate before purchase

🏆Sapphire Certification & Treatment

✅ Certification Details:

Professional certificates from GIA, SSEF, Gübelin labs
Origin verification (Kashmir, Ceylon, Madagascar, etc.)
Color grading and clarity assessment
Treatment disclosure for transparency

🔬 Sapphire Treatments:

UNHEATED: Premium - natural color and clarity
Heat Treatment: 95% of sapphires - improves color
Beryllium Diffusion: Surface treatment (disclosed)
Lattice Diffusion: Deeper color penetration

🌟 Special Notes:

Padparadscha: Rare pink-orange variety, often unheated
Royal Blue: Finest blue color, often from Kashmir/Burma
Star Sapphires: Natural asterism phenomenon
All treatments are ethically disclosed

💚Emerald Care & Certification

🧼 Special Care for Emeralds:

NEVER use ultrasonic or steam cleaners
Clean only with warm soapy water and soft brush
Emeralds are brittle - handle with extreme care
Avoid sudden temperature changes
Professional cleaning recommended

🔬 Emerald Treatments:

Oil Treatment: 95% of emeralds - fills natural fissures
Resin Treatment: Polymer filling for stability
No Treatment: Extremely rare and valuable
All treatments are disclosed in certificates

✅ Certification Notes:

Colombian emeralds are most prized
Certificates specify oil/resin treatment levels
"Minor" oil treatment is standard and acceptable
Origin verification is crucial for value

💎Gemstone Care & Certification

🧼 General Care Instructions:

Clean with warm soapy water and soft brush
Rinse thoroughly and dry with soft cloth
Store separately in soft pouches
Avoid harsh chemicals and extreme temperatures
Professional cleaning for valuable pieces

⚠️ Special Precautions:

Soft stones (Opal, Pearl): Extra gentle handling
Treated stones: Avoid ultrasonic cleaners
Organic gems: Keep away from acids and heat
Check specific care instructions for each stone type

🏆 Our Certification Promise:

All gemstones come with detailed certificates
Treatment disclosure for complete transparency
Origin verification when available
Quality grading by certified gemologists

💎 Gemstone Care Instructions

🧼 General Cleaning

Use warm soapy water and a soft brush. Avoid harsh chemicals and ultrasonic cleaners unless specifically recommended.

🏠 Storage

Store separately in soft pouches to prevent scratching. Keep away from direct sunlight and extreme temperatures.

⚠️ Special Considerations

Some gemstones require special care. Check the specific care instructions for your stone type below.

💡 Tip: Regular gentle cleaning maintains your gemstone's brilliance and value.

🔍 Gemstone Information

🧪 Treatment Information

Natural gemstones may undergo treatments to enhance their beauty. Common treatments include heating, oiling, and irradiation. All treatments are disclosed for transparency.

📜 Certification

Our premium gemstones come with certificates from recognized gemological institutes (GIA, SSEF, Gübelin) verifying authenticity, quality, and any treatments.

🌍 Ethical Sourcing

We are committed to ethical sourcing practices, ensuring our gemstones are conflict-free and responsibly mined with respect for communities and environment.

✨ Quality Guarantee: Each gemstone is carefully selected for exceptional quality and beauty.

💚Beryl Family Care Guide

Cleaning Your Beryl (Emerald, Aquamarine, Morganite):

Emerald: Gentle cleaning only - warm soapy water, avoid ultrasonic cleaners
Aquamarine: Safe for ultrasonic and steam cleaning
Morganite: Warm soapy water recommended, avoid harsh chemicals
Use soft brush for all beryl varieties

Treatment & Certification Info:

Emeralds: Often oil-treated to enhance clarity
Aquamarine: Usually heat-treated to improve color
Morganite: May be heat-treated to reduce yellow tones
All our certified beryls come with detailed treatment disclosure

Storage & Handling:

Store emeralds separately (softer than other beryls)
Avoid extreme temperature changes
Professional cleaning recommended annually
Handle with care - beryl can be brittle

🌈Tourmaline Care Guide

Cleaning Your Tourmaline:

Safe for ultrasonic cleaning (avoid if heavily included)
Steam cleaning generally safe for most tourmalines
Warm soapy water is always the safest option
Use soft brush to clean around settings
Avoid sudden temperature changes

Treatment & Certification Info:

Heat Treatment: Some tourmalines heated to improve color
Irradiation: Rarely used to enhance pink/red colors
Natural Colors: Most tourmalines are untreated
Our certified pieces include full treatment disclosure
Elbaite species most common in jewelry

Durability & Storage:

Hardness: 7-7.5 on Mohs scale (good durability)
Store separately to prevent scratching
Excellent for everyday jewelry wear
Professional inspection recommended annually

💎Garnet Family Care Guide

Cleaning Your Garnet:

Tsavorite & Demantoid: Gentle cleaning - warm soapy water preferred
Almandine & Pyrope: Safe for ultrasonic and steam cleaning
Grossular varieties: Warm soapy water recommended
Use soft brush for detailed cleaning
Avoid harsh chemicals and extreme temperatures

Treatment & Certification Info:

Natural Colors: Most garnets are untreated
Rare Treatments: Occasional fracture filling in lower grades
Tsavorite: Always natural, no known treatments
Color Change: Some garnets show color change properties
Our certified garnets include species identification

Durability & Storage:

Hardness: 6.5-7.5 on Mohs scale (good durability)
January birthstone - excellent for daily wear
Store separately to prevent scratching softer gems
Professional cleaning recommended annually

💎Ruby Care Instructions

🧼 Cleaning Your Ruby:

Use warm soapy water with a soft brush
Avoid ultrasonic cleaners for treated rubies
Steam cleaning is safe for natural, untreated rubies
Dry with a soft, lint-free cloth

⚠️ Important Notes:

Hardness: 9 on Mohs scale - very durable
Avoid exposure to harsh chemicals
Store separately to prevent scratching softer gems
Professional cleaning recommended annually

💎Sapphire Care Instructions

🧼 Cleaning Your Sapphire:

Use warm soapy water with a soft brush
Ultrasonic and steam cleaners are generally safe for untreated sapphires
Avoid cleaners for fracture-filled, dyed, or cavity-filled stones
Dry with a soft, lint-free cloth

⚠️ Important Notes:

Hardness: 9 on Mohs scale - very durable
Treatments are common; ask for a gemological report
Store separately to prevent scratching other jewelry
Certified stones will have a report from a gemological lab

💎Topaz Care Guide

Cleaning Your Topaz:

Blue & Colorless Topaz: Safe for ultrasonic and steam cleaning
Imperial & Pink Topaz: Warm soapy water is the safest method
Avoid sudden temperature changes
Use a soft brush to clean behind the stone

Treatment & Certification Info:

Blue Topaz: Routinely irradiated and heated to produce color
Pink & Red Topaz: May be heated to enhance color
Imperial Topaz: Generally untreated
Certification confirms origin and any treatments

Durability & Storage:

Hardness: 8 on Mohs scale (very durable)
Can be brittle and prone to chipping
Store separately to avoid scratching other gems
November birthstone - suitable for everyday wear with care

💎Zoisite (Tanzanite) Care Guide

Cleaning Your Tanzanite:

Warm, soapy water is the only safe method for cleaning tanzanite.
Never use ultrasonic or steam cleaners.
Avoid sudden temperature changes and harsh chemicals.
Use a soft brush to gently clean the stone.

Treatment & Certification Info:

Tanzanite is routinely heat-treated to produce its violet-blue color.
Untreated tanzanite is typically brown or yellow.
Certification confirms authenticity and details any treatments.
Look for stones with strong pleochroism (different colors from different angles).

Durability & Storage:

Hardness: 6.5 on Mohs scale (relatively soft).
Prone to scratching and chipping; not ideal for daily wear in rings.
Store separately in a soft cloth or padded box.
Best suited for pendants and earrings.

💎Beryl Care Instructions

🧼 Cleaning Your Beryl:

Use warm, soapy water and a soft brush.
Avoid harsh chemicals and ultrasonic cleaners.
For iron stains, warm oxalic acid can be used with caution.

⚠️ Important Notes:

Beryls are sensitive to extreme temperature changes and prolonged sunlight.
Store separately in a soft cloth or padded box to prevent scratches.
Regularly check the setting with a professional jeweler.

💎Quartz Family Care Guide

Cleaning Your Quartz:

Amethyst, Citrine, Rose Quartz: Warm, soapy water is best. Avoid prolonged exposure to sunlight to prevent color fading.
Rock Crystal, Smoky Quartz: Safe for ultrasonic and steam cleaners.
Rutilated & Tourmalinated Quartz: Gentle cleaning with warm, soapy water is recommended.
Avoid harsh chemicals for all quartz varieties.

Treatment & Certification Info:

Amethyst & Citrine: Often heat-treated to enhance color.
Rose Quartz: Generally not treated.
Smoky Quartz: May be irradiated to create or enhance color.
Certification can identify the specific quartz variety and any treatments.

Durability & Storage:

Hardness: 7 on Mohs scale (good durability).
Suitable for all types of jewelry.
Store separately to prevent scratching softer stones.
February birthstone (Amethyst).

💎Opal Care Guide

Cleaning Your Opal:

Solid Opals: Clean with a soft, damp cloth and mild detergent.
Doublets & Triplets: Never soak or immerse in water. Wipe with a damp cloth.
Avoid ultrasonic cleaners, harsh chemicals, and oils.
Ethiopian (Welo) Opals: These are hydrophane and can absorb water, which may affect their color play. Avoid prolonged contact with water.

Treatment & Certification Info:

Most solid opals are not treated.
Doublets and triplets are assembled stones and should be disclosed as such.
Some opals may be sugar or smoke treated to darken the body color.
Certification identifies the type of opal (e.g., black, white, crystal, boulder) and its origin.

Durability & Storage:

Hardness: 5.5-6.5 on Mohs scale (relatively soft and delicate).
Can be prone to crazing (cracking) if subjected to rapid temperature changes or low humidity.
Store in a soft pouch or padded box, away from other jewelry.
October birthstone.

📜Gemstone Treatments & Certifications

Common Treatments:

Heat Treatment: Improves color and clarity.
Fracture Filling: Fills cracks to enhance appearance.
Impregnation: Adds stability to softer stones.
Bleaching: Lightens the color of pearls and jade.
Coating: Enhances color with a surface layer.

Why Certifications Matter:

A certificate from a gemological lab (like GIA, EGL, AGL) verifies a gemstone's identity, characteristics, and any treatments it has undergone. This ensures you are making an informed purchase.

💎Peridot Care Guide

Cleaning Your Peridot:

Warm, soapy water is the recommended cleaning method.
Avoid ultrasonic and steam cleaners.
Do not expose to large, rapid temperature changes.
Peridot is sensitive to acidic solutions.

Treatment & Certification Info:

Peridot is not typically treated.
Its vibrant green color is natural.
Certification can confirm the origin and authenticity of the stone.
Look for eye-clean stones with good transparency.

Durability & Storage:

Hardness: 6.5-7 on Mohs scale (fair to good durability).
Can be susceptible to scratching and stress fractures.
Best suited for pendants, earrings, and occasional-wear rings.
Store separately to prevent scratches.
August birthstone.

Quartz Cleaning & Care Guide

Cleaning Instructions:

Use a soft brush with mild dish soap and warm water
Gently scrub the gemstone and rinse thoroughly
Avoid ultrasonic and steam cleaners
Dry with a soft, lint-free cloth
For heavily soiled jewelry, professional cleaning is recommended

Durability & Care:

Hardness: 7 on Mohs scale
Suitable for all jewelry types
Protect from extreme temperature changes
Store separately to prevent scratching other gems

Treatment & Certification:

Quartz varieties may undergo heat treatment or irradiation to enhance color. Certification information is available upon request. Our gemologists provide detailed treatment and certification reports.

CRISTAL SOLIDE OPALE WELO Facetté 2,095 cts

Instructions de nettoyage

Traitement et certification

Articles similaires

💎 Gemstone Care Guide

💎 Smart Gemstone Care Guide

🎯 Specific Care for This Gemstone:

🧼 General Cleaning Instructions:

⚠️ Important Storage Tips:

💎 Gemstone Care Guide

💎 Gemstone Care Instructions

🔬 Treatment & Certification Guide

🧪 Common Treatments

📜 Certification Bodies

💡 Important Notes

⚖️ Gemstone Hardness & Durability Guide

📏 Mohs Hardness Scale (1-10)

💪 Durability Factors

⚠️ Special Care Needed

🏆 Certification & Treatment Information

📜 Understanding Certifications

🔬 Common Treatments

🏆 Certification & Treatment Information

🏆 Certification & Treatment Information

💎 Ruby Care Instructions

🌍 Ethical Sourcing & Origins

✅ What We Verify

🏔️ Premium Origin Locations

🔍 Certification Standards We Follow

🤝 Our Commitment

💎Ruby Care Instructions

Cleaning Your Ruby:

Storage Tips:

⚠️ Avoid:

💙 Sapphire Care Instructions

💎Sapphire Care Instructions

Cleaning Your Sapphire:

Durability Notes:

Special Care for Padparadscha:

🏆 Certification & Authentication Guide

🏆Ruby Certification & Treatment

✅ Certification Status:

🔬 Common Treatments:

💡 What to Look For:

🏆Sapphire Certification & Treatment

✅ Certification Details:

🔬 Sapphire Treatments:

🌟 Special Notes:

💚Emerald Care & Certification

🧼 Special Care for Emeralds:

🔬 Emerald Treatments:

✅ Certification Notes:

💚 Emerald & Beryl Care Instructions

💎Gemstone Care & Certification

🧼 General Care Instructions:

⚠️ Special Precautions:

🏆 Our Certification Promise:

💎 Gemstone Care Instructions

🧼 General Cleaning

🏠 Storage

⚠️ Special Considerations

💎 Specialized Care for Your Gemstone

🔍 Gemstone Information

🧪 Treatment Information

📜 Certification

🌍 Ethical Sourcing

💎Ruby Care Instructions

Cleaning Your Ruby:

Storage & Handling:

💙Sapphire Care Instructions

Cleaning Your Sapphire:

Durability Notes:

💚Beryl Family Care Guide

Cleaning Your Beryl (Emerald, Aquamarine, Morganite):

Treatment & Certification Info:

Storage & Handling:

🌈Tourmaline Care Guide

Cleaning Your Tourmaline:

Treatment & Certification Info:

Durability & Storage: