Petra Star Vintage Vault Collection | c. 1905 Edwardian Platinum Solitaire Ring | 7.57ct Old Mine Cut Diamond
Petra Star Vintage Vault Collection | c. 1905 Edwardian Platinum Solitaire Ring | 7.57ct Old Mine Cut Diamond
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Some jewels whisper. This one commands the room.
At the center of this extraordinary antique solitaire glows a 7.57 carat old mine cut diamond—a stone of monumental presence and irreplaceable character, shaped by hand in an era when cutters coaxed brilliance from rough through patience, artistry, and an intimate understanding of light. Old mine cuts, the forerunner of today's modern brilliant, are beloved by collectors for their deeply romantic sparkle: warm, candlelit, alive with inner fire. This exceptional example has been re-polished to exacting standards by master cutter Maarten de Witte, restoring its original surface brilliance while honoring every facet of its antique soul.
The setting is quintessentially Edwardian — the apex of platinum craftsmanship, born in an era defined by delicacy, grandeur, and the radical new possibilities of a metal that could be worked finer than lace without sacrificing strength. Dating to approximately 1905, the original platinum mounting has been meticulously preserved and restored with freshly rebuilt vintage-style prongs, ensuring the stone is held with both security and period-correct elegance. The mount's airy open-work silhouette, ornate filigree detailing, and refined lace-like gallery are everything collectors seek in authentic Edwardian jewelry — and precisely the aesthetic that has captured the imagination of a new generation of style icons.
It is no coincidence that Taylor Swift, among others, has made Old Mine Cut Diamonds a touchstone of modern aspirational dressing. The era's signature combination of architectural delicacy and unapologetic scale is simply without parallel.
This is not a reproduction. This is not inspired by the past. This is the past — restored, re-polished, and ready to be worn as the centerpiece of a life well-lived.
Details
Material:
Platinum,
Diamond
Measurements: 12.1 mm–1.6 mm / 7.8 mm high off finger
Markings: "PLAT," "6237113648"
Weight: 6 grams
Ring Size:
6.5
Period/Style: Edwardian
Diamond
Quantity: 1
Source: Natural
Measurements: 12.27 x 11.67 x 7.43 mm
Weight: 7.57 cts
Shape: Cushion
Cut: Old Mine
Color: N
Clarity: I2
GIA Report No.:
6237113648
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Pickup & Shipping
If you have specific delivery needs or timing requests, please contact us. While we strive to ensure timely delivery, we cannot guarantee dates and are not responsible for carrier delays.
Made-to-Order Items
Made-to-order pieces take approximately 4–6 weeks to craft. We’ll email you once your item is ready to arrange delivery.
One-of-a-Kind Items
These unique items are typically ready for pickup or delivery within 24 hours during business hours. You’ll receive an email when your order is ready. Please allow up to 2 weeks for resizing prior to shipment.
Local Pickup
Available at our downtown Mystic showroom during business hours. We’ll email you to schedule your pickup appointment once your order is ready.
Shipping
Once your item is ready, you’ll receive an email with shipping details. View our shipping policy and for terms and information about international orders.
Sizing
Rings
The majority of our rings are one-of-a-kind. If you would like to order a ring in a specific size, please contact us and we will do our best to accommodate your request.
Helping you find the perfect fit is our priority. There is a flat fee of $60 to size down. The sizing-up cost varies based on width of the ring and the amount of material required.
Keep in mind that finger sizes fluctuate due to factors such as temperature and time of day. Rings with an open space under the mounting, as well as contour bands, may fit differently than fully round rings.
Ring sizings take 3 weeks before they ship.
Our Materials
Our Petra Star signature pieces are made-to-order using recycled alloys. Custom items are available in the following materials:
- 14k yellow, rose, or white gold
- 18k yellow, rose, or white gold
- Palladium
- Platinum
If the item you are considering is not available to purchase in your preferred metal/color, please get in touch with us to discuss your specific request.
Our one-of-a-kind items are only available "as is.” We are happy to discuss the options for remaking a similar piece in a different metal to your specifications—it's one of our specialties.
Depending on the light source and viewing angle, the color of natural gemstones may vary. The depiction of color online and in images may not always accurately reflect the colors that are visible in person. Whenever possible, we recommend viewing the item in person to ascertain its true color.
Custom Designs
Schedule a consultation with our in-house designer and owner of Petra Star, Dimitria. We love getting to know you and pairing the perfect piece to your lifestyle and aesthetic.