SearchFrostine Lab-Grown Diamond Engagement Ring, Platinum, 2.50 s ct center
The store's own photos of item 71834. Tap a picture to zoom.
Which size?
Find your ring size in a minute
Your screen becomes the sizer. Set it with a bank card, then measure the finger you will wear the ring on, with a ring that already fits that finger or with a strip of paper.
1. Set the screen with a card
Lay any bank, debit or ID card flat on the screen, standing tall, so its short edge runs across the box, and move the slider until the box is exactly as wide as the card. No bank card? A driver's license, metro card, gift card or hotel key is the same size. Without any card the circle and the ruler are not to scale: measure your paper strip with a real ruler and set that number in millimeters on the strip slider, then send it to the desk.
2. Measure
Take a ring that fits the same finger of the same hand the new ring will live on; every finger is its own size. Set it on the screen over the circle and move the slider until the circle just fills the inside of the ring.
Size 7, 17.3 mm inside
Wrap a strip of paper snug around the base of the finger, where the ring sits, and mark where it meets. If your knuckle is bigger, wrap it there too and take a size between the two, nearer the knuckle. Lay the strip along the ruler's right edge from the 0. Move the slider until the gold line sits on your mark.
54.5 mm around is size 7
Size 7: 17.3 mm across, 54.4 mm around. It is the most bought size here: 21 percent of the engagement rings sold here in the past year with a size recorded. 159 of the 174 rings here list size 7.
The engagement ring size chart, 4 to 16
| US size | Inside diameter | Around the finger | Rings here listing it |
|---|---|---|---|
| 4 | 14.9 mm | 46.8 mm | 73 |
| 4.5 | 15.3 mm | 48.0 mm | 77 |
| 5 | 15.7 mm | 49.3 mm | 158 |
| 5.5 | 16.1 mm | 50.6 mm | 158 |
| 6 | 16.5 mm | 51.9 mm | 163 |
| 6.5 | 16.9 mm | 53.1 mm | 163 |
| 7 | 17.3 mm | 54.4 mm | 159 |
| 7.5 | 17.7 mm | 55.7 mm | 154 |
| 8 | 18.1 mm | 57.0 mm | 152 |
| 8.5 | 18.5 mm | 58.2 mm | 111 |
| 9 | 18.9 mm | 59.5 mm | 101 |
| 9.5 | 19.4 mm | 60.8 mm | 20 |
| 10 | 19.8 mm | 62.1 mm | 18 |
| 10.5 | 20.2 mm | 63.3 mm | 1 |
| 11 | 20.6 mm | 64.6 mm | 1 |
| 11.5 | 21.0 mm | 65.9 mm | 0 |
| 12 | 21.4 mm | 67.2 mm | 0 |
| 12.5 | 21.8 mm | 68.5 mm | 0 |
| 13 | 22.2 mm | 69.7 mm | 0 |
| 13.5 | 22.6 mm | 71.0 mm | 0 |
| 14 | 23.0 mm | 72.3 mm | 0 |
| 14.5 | 23.4 mm | 73.6 mm | 0 |
| 15 | 23.8 mm | 74.8 mm | 0 |
| 15.5 | 24.2 mm | 76.1 mm | 0 |
| 16 | 24.6 mm | 77.4 mm | 0 |
A screen measurement set with a card is a guide, good to about a half size; the desk sizes you right the first time. "Rings here listing it" counts the live listings on October 2, 2026; the sales lines are engagement rings sold here in the year to September 26, 2026, with a size recorded.
Another metal, karat or size, or an engraving? Ask a jeweler before you buy. Custom work and resized rings are final sale.
About this item
- Platinum.
- 5 grams. The weight can change slightly when the ring is sized; text a jeweler for the exact weight.
- 2 mm band width.
- Sizes offered: 5 to 9, half sizes. "Which size?" under the size pills opens the store's ring sizer. A size not listed: Ask a jeweler before you buy.
- Listed for women. Sold and shipped by TraxNYC, 64 W 47th St, New York, in business since 2004. Secondhand Dealer License 2123575-DCWP.
Item specifics
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Description
The Frostine Engagement Ring features a 2.50 carat oval lab grown diamond secured by six claw prongs in a platinum setting. Diamond accents and delicate milgrain detailing along the band add a vintage-inspired finish, while a hidden diamond halo beneath the center stone adds subtle sparkle from the side.
Crafted entirely in platinum, Frostine combines intricate detailing with a refined, cool-toned finish that complements the brilliance of the oval center diamond. The six-claw-prong setting and milgrain accents give the ring a delicate, romantic character while maintaining a classic bridal silhouette.
Questions & answers
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