6.64ct Antique Old European Cut Diamond Solitaire Engagement Ring

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Engraving

Script (+$150) Block (+$150) Hand (+$150)

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By Erstwhile original design handcrafted in NYC, centering an impressive 6.64 carat antique old European cut diamond in 22k yellow gold with a platinum crown. Inspired by late 19th-century solitaires, sculptural prongs and an elevated crown give the ring a bold, architectural presence while clean lines and thoughtful proportions keep it wearable.

By Erstwhile designs focus on proportion, restraint, and longevity—reinterpreting historic details through a modern lens. Handcrafted in the heart of New York City, the Erstwhile Collection showcases rare antique diamonds elegantly set in precious metals.

Details

Item: SEREN 6.64STVS2
Center Stone: Natural antique certified 6.64 carat old European cut diamond with S-T color and VS2 clarity and GIA Natural Diamond Grading Report #6233674482
Metal: 22K Yellow Gold and Platinum
Current ring size: 6.5 (ring can be re-sized)

Shipping

We offer free shipping. Orders will be shipped within two business days, fully insured, via FedEx unless add-on services are applied. All orders will be personally arranged with you, the purchaser, and will not ship without your approval. If you have an important date in mind, let us know immediately so we can plan with you accordingly. All shipments require an adult signature.

International shipping is $175

Return Policy

If you are not completely satisfied with your purchase, we accept returns within 14 days of receipt in the US. We offer free shipping on returns; contact us to arrange a return or exchange. We will provide a free return shipping label. 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

This ring is available to be customized with your choice of carat size, color, and clarity in platinum, 18k yellow, or rose gold. Please note we only work with natural antique cut diamonds. Bespoke projects take approximately 4 to 6 weeks to create. Email us to start a bespoke project.