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GRS Certified 2.47 Carat No Heat Royal Blue Sapphire Diamond 18K Art Deco Ring
ASSAY
253.360,00 kr
GRS Certified 2.47 Carat No Heat Royal Blue Sapphire Diamond 18K Art Deco Ring
Est. Delivery Between: and
GRS-certified 2.47 carat oval vivid royal blue no-heat natural sapphire set in an 18K white gold three-stone ring flanked by two round brilliant diamonds totaling 0.60 carats, stamped 18K 750, weighing 3.84 grams. Size adjustable.
Product Specifications:
- Item Type: Three-Stone Engagement / Cocktail Ring
- Metal: 18K White Gold (stamped 18K 750)
- Weight: 3.84 grams
- Size: Adjustable
- Shank Style: Plain Tapered High-Polish
- Setting Style: Four-Prong (center), Three-Prong (side stones)
- Certification: GRS Certified
- Period: Art Deco (1930)
- Style: Art Deco Three-Stone
Center Stone Details:
- Type: Natural Blue Sapphire
- Carat: 2.47 carats
- Color: Vivid Royal Blue
- Treatment: No Heat (unheated — confirmed per GRS)
- Cut: Oval Brilliant
- Setting: Four-Prong
- Certification: GRS Certified
Accent Stone Details:
- Type: Natural Diamond
- Carat: 0.60 carats (total weight)
- Cut: Round Brilliant
- Quantity: 2 stones (~0.30 carats each)
- Setting: Three-Prong, one on each shoulder flanking the center sapphire
About the Setting:
The 18K white gold three-stone mounting presents the classic trilogy format in its most refined and unadorned expression — a clean tapered shank rising into two three-prong round diamond shoulders that frame the elevated four-prong oval center sapphire. The white gold prong setting allows maximum light entry into both the diamonds and the sapphire, ensuring the stones perform at their optical peak from all angles. Stamped 18K and 750 on the inner shank, the ring confirms its precious metal composition and delivers the cool, bright metal tone that best complements the deep royal blue of the center sapphire.
About the Stones:
The 2.47 carat oval sapphire is GRS-certified as vivid royal blue and — critically — carries a no-heat designation, meaning it has never been subjected to heat treatment, the standard enhancement applied to the vast majority of commercial sapphires worldwide. Unheated sapphires of this color saturation and carat weight are exceptionally rare and command a significant premium over heated equivalents, as they represent the stone exactly as nature formed it. The vivid royal blue color — a deep, saturated blue with strong transparency — is among the most desirable hues in the sapphire spectrum, associated historically with the finest Ceylon and Burmese production. The two flanking round brilliant diamonds at approximately 0.30 carats each provide crisp, white brilliance that frames the blue center with elegant contrast and ensures the sapphire's color reads at its richest against a clean white background.
MORE DETAILS
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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
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Speak to an Expert
Consult directly with our on-staff GIA Graduate Gemologist and Watchmaker. Founded by an owner in the trade since 1983.
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 includes a certificate of appraisal, confirming authenticity, documenting value, and accepted by insurance.
Certificate of Appraisal
Every piece includes a certificate of appraisal confirming authenticity, documenting value, and providing trusted documentation accepted by insurance companies.
BBB, JBT & Diamond Dealers Club
BBB Accredited · JBT · Diamond Dealers Club · Rapaport
BBB, JBT & Diamond Dealers Club
We are proud members of the BBB, JBT, and Diamond Dealers Club, reflecting our commitment to professionalism, trust, and integrity in the jewelry industry.
Four Locations
Visit us in Key West, Downtown Miami, New York, or Hong Kong.
Four Locations
Visit us in person at any of our four locations in Key West, Downtown Miami, New York, or Hong Kong for personalized service.
Fast Shipping
Most in-stock pieces ship within 24–48 hours, with FedEx overnight delivery (orders $500+). Contact us for expedited shipping.
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.
Real People, Real Answers
Text, call, or email our team directly, before or after your purchase.
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.
Insured & Gift-Ready
Every purchase is 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 watches you won't find in a display case anywhere else, and what we don't source, we make ourselves. Either way, the piece in front of you is singular, not pulled from a production run. When you buy from Assay, chances are no one else on earth owns its twin.
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