Designed around a truly extraordinary antique diamond, this By Erstwhile original centers a certified natural 5.88 carat old mine cushion cut diamond with W–X color and SI1 clarity. Antique old mine cuts of this size are exceptionally rare, and the diamond's striking elongated proportions make it rarer still. With its commanding scale and unmistakable presence, it is a showstopping stone that reflects the grandeur of 19th-century diamond cutting. Hand fashioned long before modern cutting technology, its high crown, softly rounded outline, and distinctive faceting create the bold, soulful sparkle that only an antique diamond can possess. The warm W–X color lends the stone a rich, candlelit glow, further enhancing its remarkable antique character.
The setting is intentionally restrained, allowing the diamond to speak for itself. Handcrafted in 18k yellow gold, a finely proportioned bezel frames and protects the stone while creating a clean, sculptural silhouette. The slim rounded band keeps the focus on the exceptional diamond, while a narrow gallery opening beneath the setting allows light to pass through, preserving the stone's lively brilliance. Part of the Classic Solitaire collection, this design balances bold presence with quiet refinement, celebrating an antique diamond of extraordinary scale and character.
Handmade in New York City, the By Erstwhile Collection presents rare antique diamonds in refined settings that balance timeless craftsmanship with modern wearability.
Details
- Item: BEZEL OM 5.88WXSI1
- Stone: Antique certified natural 5.88 carat old mine cut diamond with W-X color and SI1 clarity with GIA #2235923113
- Metal: 18K yellow gold
- Band measure 2 mm
- Current ring size: 6.5
Shipping
We offer free shipping. Orders will be shipped within two business days via insured FedEx delivery unless add-on services are applied. All orders will be arranged with you, the purchaser, and will not ship without your approval. If you have an important date in mind, let us know so we can plan accordingly. All shipments require an adult signature.
International shipping is $175
Return Policy
We accept returns within 14 days of receipt. We offer free shipping on returns in the US; contact us to arrange a return or exchange. We will provide a free return shipping label that will be insured. Purchases shipped back without our knowledge will incur a fee equal to 10% of the purchase value. Returns without our knowledge which are then lost/stolen in transit, are the sender's responsibility.
Customize
You can personalize this ring with your preferred carat size, color, and clarity, available in platinum, 18k yellow, or rose gold. It's important to mention that we exclusively use natural antique cut diamonds. The creation of bespoke projects typically requires about 4 to 6 weeks. Email us to start a bespoke project.
