Art Deco Platinum Three Stone Diamond Ring – Old Mine Cut Center, Vintage Illusion Box Setting | Petra Star
Art Deco Platinum Three Stone Diamond Ring – Old Mine Cut Center, Vintage Illusion Box Setting | Petra Star
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Channel timeless elegance with Petra Star's vintage Art Deco three stone diamond ring, a rare masterpiece from the glamorous 1920s-30s era. This classic design features a prominent 0.63 ct Old Mine Cut diamond, cherished for its vintage cushion silhouette and warm brownish pink hue (top lot brown, C3-4), set securely in a crisp platinum box mounting. Two single cut side diamonds (total 0.11 ct, I/J color, SI1-SI2 clarity) are pavé-set in illusion box settings, enhancing brilliance and symmetry across the band.
Expertly fabricated in solid platinum (marked "10% IRID. PLAT"), this meticulously restored ring embodies Art Deco’s geometric lines and understated luxury. With a low profile for daily comfort and a height of just 5.6 mm off the finger, it measures 5.5–1.1 mm wide and fits a finger size 4 (with sizing options available). Weighing 3 grams, it is a substantial, collectible heirloom for antique jewelry enthusiasts.
- Era: Circa 1920–30s, authentic Art Deco
- Center Diamond: 0.63 ct Old Mine Cut, 4.87 x 4.99 x 4.13 mm, top lot brown (C3-4), I1/I2 clarity
- Side Diamonds: 2 single cuts, 0.11 cts total, 2.4 mm each, I/J, SI1–SI2 clarity
- Setting: Platinum, box and illusion mountings (“10% IRID. PLAT”), 5.5–1.1 mm width, 5.6 mm high off finger
- Size: US 4 (inquire for resizing)
- Weight: 3 grams
Art Deco three stone rings are beloved symbols of the past, present, and future—making them perfect for engagement, anniversary, or simply everyday elegance. Their geometric precision, old European and single cut diamonds, and platinum mounts mark them as true collectibles for lovers of antique jewelry and lasting style.
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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.