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7.18 Carat Color Change Sapphire & Diamond 18K Bypass Ring
ASSAY
€75.078,95
7.18 Carat Color Change Sapphire & Diamond 18K Bypass Ring
Est. Delivery Between: and
GRS-certified 7.18 carat color change Sri Lanka sapphire and 2.50 carat tapered baguette diamond 18K yellow gold geometric bypass cocktail ring, featuring the rare violet-blue to purple color change cushion sapphire in a white gold prong basket set within a bold channel-set baguette diamond hexagonal bypass frame.
Ring Size 7.25, adjustable.
Product Specifications:
- Item Type: Geometric Bypass Cocktail Ring / Statement Ring
- Metal: 18K Yellow Gold with White Gold Prong Tips
- Size: 7.25 (adjustable)
- Weight: 12.91 grams
- Certification: GRS
Center Stone Details:
- Type: Natural Color Change Sapphire
- Carat: 7.18
- Cut: Cushion
- Color: Color Change — violet-blue in daylight / purple in incandescent light
- Origin: Sri Lanka (Ceylon)
- Enhancement: Heated (H)
- Certification: GRS
Accent Stone Details:
- Type: Tapered Baguette Diamond
- Carat: approximately 2.50 total
- Quantity: 26 stones
- Setting: Channel set, three sides of geometric hexagonal bypass frame
About the Setting:
The setting is a striking architectural statement in 18K yellow gold — a bold geometric hexagonal bypass frame with clean, angular facets that surround the center sapphire on three sides, each panel fully channel-set with tapered baguette diamonds that run in perfect parallel rows from corner to corner. The open bypass design leaves the lower portion of the frame deliberately open, creating a modern asymmetric silhouette that differentiates this ring entirely from conventional halo or cluster settings. The high-polish yellow gold surfaces between the diamond channels reflect light with a warm intensity that contrasts beautifully against the icy white baguettes and the blue-to-purple color-changing sapphire at the center.
About the Stone:
The 7.18 carat GRS-certified natural color change sapphire from Sri Lanka is one of the most extraordinary and sought-after phenomena in the entire gemstone world — a single stone that displays two distinct colors depending on the light source, shifting from a rich violet-blue in daylight to a deep purple under incandescent light. Sri Lanka (Ceylon) is the world's premier source for color change sapphires, producing stones with the cleanest, most dramatic color transitions and the finest transparency of any origin. At 7.18 carats in a cushion cut that maximizes the color display across its broad faceted table, this sapphire delivers a visual experience that no single-color stone can replicate — the wearer essentially owns two different gems in one. GRS certification confirms the Sri Lanka origin and heated status, which is the universally accepted standard enhancement for sapphires and in no way diminishes the stone's extraordinary natural rarity.
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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