Contact us to speak with our jewelry experts today
Questions
Call or Text: (305) 788-3019
Or email us: info@assayjewelers.com
4.02 Carat No Heat Ceylon Sapphire In Platinum Art Deco Ring
ASSAY
$368,125.00
4.02 Carat No Heat Ceylon Sapphire In Platinum Art Deco Ring
Est. Delivery Between: and
View this piece in person at Gad & Co, Hong Kong
Family jewelers since 1983
Walk-ins welcome - booking just ensures this piece is in the store when you visit.
Zhongcai Centre, 131 Queen's Road Central, Central, Hong Kong
AGL and Gubelin certified no-heat 4.02 carat cushion cut Ceylon sapphire set in vintage platinum Art Deco original mounting with diamond halo, handmade filigree, milgrain, and ornate diamond pierced shoulders.
Accompanied with two certificates. Gubelin and AGL certified, stone measures 9.86 x 8.87 x 5.09mm. Ring size 6, adjustable.
Product Specifications:
- Item Type: Art Deco Engagement Ring
- Metal: Platinum 950
- Size: Adjustable
- Era: Art Deco
- Period: Circa 1930
- Certification: Gubelin 25112027, AGL 1151474
Center Stone Details:
- Type: Natural Corundum Sapphire
- Carat: 4.02 Carats
- Cut: Cushion Shape, Modified Brilliant Cut, Modified Step Cut
- Color: Blue
- Transparency: Transparent
- Dimensions: 9.86 x 8.87 x 5.09mm
- Treatment: No Heat (NTE)
- Origin: Sri Lanka (Ceylon)
Certification:
Gubelin: #25112027
AGL: #1151474
Accent Stone Details:
- Type: Natural Diamond
- Setting: Halo and Shoulders
- Cut: Round Brilliant and Single Cut
- Color: Near Colorless
- Clarity: VS-SI Range
About The Sapphire
This 4.02 carat Ceylon sapphire exhibits rich royal blue color with exceptional transparency and cushion cut proportions. No-heat treatment designation confirms the stone's natural color without thermal enhancement, significantly increasing value and desirability. Dual certification from Gubelin and AGL, two of the world's most respected gemological laboratories, provides comprehensive authentication and quality documentation. Ceylon sapphires from Sri Lanka remain among the most prized colored gemstones for their superior color saturation and transparency.
Large gem-quality sapphires like this are rarely found in nature—formation requires precise geological conditions, adequate pressure and temperature, and a rare combination of chemical elements including aluminum, iron, and titanium.
Most sapphires on the market are heated to improve color and clarity. This one wasn't. What you see is exactly what nature produced.
Demand for unheated sapphires continues to rise while supply from major sources—Kashmir, Burma, Sri Lanka, Madagascar, Tanzania—remains limited. Stones like this are increasingly difficult to source.
Accompanied by Gübelin Report No. 25112027.
MORE DETAILS
Contact us or fill out our custom jewelry form.
USA: 2-5 business days (USPS/FedEx)
Canada: 4-8 business days
Australia: 5-10 business days
Europe: 4-8 business days
Other countries: 6-10 business days
Our layaway plan is 100% free and you don't have to apply or qualify for it. We simply require a 10% down payment then you will have 1-6 months to pay the remainder of the balance. Weekly, bi-weekly or monthly installment payments are available. You can pick and choose your own payment plan to find an option that works for you. Your order will be shipped to you as soon as it is paid in full. More Details Here.
We have a 14-day return policy, which means you have 14 days after receiving your item to request a return.
Non-Returnable Items: Certain items are ineligible for return, including:
- Resized or personalized items (e.g., engraved pieces).
- Pieces that are Custom-Made or Made To Order.
- Items purchased using an installment plan.
More Details Here
Design and Construction
Make an Offer
List Price:
HK$368,125.00 HKD
Choose Your Offer amount
Thank You
Your offer has been submitted. We'll be in touch shortly.
Speak to an Expert
Direct access to our GIA Graduate Gemologist and Watchmaker.
Speak to an Expert
Consult directly with our on-staff GIA Graduate Gemologist and Watchmaker. With an owner in the trade since 1983, expert guidance is always available.
Certificate of Appraisal
Every piece comes with proof of authenticity and value.
Certificate of Appraisal
Every piece includes a certificate of appraisal confirming authenticity, documenting value, and providing trusted documentation accepted by insurance companies.
Industry Accredited
BBB, Diamond Dealers Club, JBT, & RapNet members
Industry Accredited
We're accredited by the Better Business Bureau, hold membership in the Jewelers Board of Trade, and are verified members of RapNet, the diamond industry's leading trading network. These credentials reflect our standing and accountability within the trade, not just to our customers, but to the industry itself.
4 Global Locations
Visit us in Miami, New York, Key West, or Hong Kong.
4 Global Locations
Visit us in person at any of our four locations in Key West, Downtown Miami, New York, or Hong Kong for personalized service.
Find out more and schedule an appointment at your nearest location here
Fast Shipping
Most orders ship within 24–48 hours.
Fast Shipping
Most in-stock pieces ship within 24–48 hours, with FedEx overnight delivery available on orders $500+. Contact us for expedited shipping options.
See full shipping policy here
Real People, Real Answers
Text, call, or email our team directly.
Real People, Real Answers
Connect directly with our knowledgeable team by text, phone, or email. We’re here to answer your questions before or after your purchase.
Contact us page here
Insured & Gift-Ready
Every purchase is shipped fully insured for its entire value and shipped with signature required.
Each order comes gift-ready upon request.
One of One
Most jewelry is made to be sold many times over. Ours isn't. We source rare vintage and estate pieces, and craft the rest ourselves in-house.
Verified & accredited
Credentials you can verify.
Trusted On Every Platform
We’re proud to be featured as top sellers across multiple marketplaces. No matter where you prefer to shop, you’ll find the same exceptional products and service available on every platform!