Tatum
Size Guide
| US | UK | EU | JP | mm |
|---|---|---|---|---|
| 3 | F | 44 | 4 | 14.0 |
| 3 ¼ | F ½ | 44.5 | 4 | 14.2 |
| 3 ½ | G ½ | 45 | 5 | 14.4 |
| 3 ¾ | H | 45.5 | 6 | 14.6 |
| 4 | H ½ | 46.5 | 7 | 14.8 |
| 4 ¼ | I | 47 | 7 | 15.0 |
| 4 ½ | I ½ | 47.5 | 8 | 15.2 |
| 4 ¾ | J | 48 | 8 | 15.4 |
| 5 | J ½ | 49 | 9 | 15.7 |
| 5 ¼ | K | 49.5 | 9 | 15.9 |
| 5 ½ | L | 50 | 10 | 16.1 |
| 5 ¾ | L ½ | 50.5 | 10 | 16.3 |
| 6 | L ½ | 51.5 | 12 | 16.5 |
| 6 ¼ | M | 52 | 12 | 16.7 |
| 6 ½ | M ½ | 52.5 | 13 | 16.9 |
| 6 ¾ | N | 53 | 13 | 17.1 |
| 7 | N ½ | 54 | 14 | 17.3 |
| 7 ¼ | O | 54.5 | 14 | 17.5 |
| 7 ½ | O ½ | 55 | 15 | 17.7 |
| 7 ¾ | P | 55.5 | 15 | 17.9 |
| 8 | P ½ | 56.5 | 16 | 18.2 |
| 8 ¼ | Q | 57 | 16 | 18.4 |
| 8 ½ | Q ½ | 57.5 | 17 | 18.5 |
| 8 ¾ | R | 58.5 | 17 | 18.8 |
| 9 | R ½ | 59 | 18 | 19.0 |
| 9 ¼ | S | 59.5 | 18 | 19.2 |
| 9 ½ | S ½ | 60.5 | 19 | 19.4 |
| 9 ¾ | T | 61 | 19 | 19.6 |
| 10 | T ½ | 62 | 20 | 19.8 |
| 10 ¼ | U | 62.5 | 21 | 20.0 |
| 10 ½ | U ½ | 63 | 22 | 20.2 |
| 10 ¾ | V | 64 | 22 | 20.4 |
| 11 | V ½ | 65 | 23 | 20.6 |
Measure your finger
- Wrap a thin strip of paper or string around the base of your finger.
- Mark where the ends meet and measure the length in millimeters.
- Match that measurement to the "mm" column on the conversion tab.
Tips
- Measure at the end of the day, when fingers are warmest.
- If your knuckle is wider than the base, size for the knuckle.
- Need help? Request a free ring sizer and we will mail it to you.
Add free engraving Optional, up to 25 characters
Personalize your ring with up to 25 characters at no extra cost.
Add your engraving directly on the product page before adding it to cart.
Engraved on the inside of the band. ✓ Saved — will appear on the inside of your ring.
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- United States
- Canada
- United Kingdom
- Europe
- Australia
- Rest of World
Ring Details
Carat Weight
Minimum carat weight. You may receive a slightly higher carat weight.
Clarity
Clarity grades how clean the diamond is. Fewer tiny inclusions means higher clarity.
All our diamonds are 100% eye-clean.
Color
Color grades how white the diamond is. D is the whitest; Z has a faint yellow tint.
All our clear diamonds are F or higher, in the "colorless" range.
Shape
Shape is the outline of the diamond when viewed from above. Round, Oval, Cushion, Emerald, and so on.
Origin
All our diamonds are lab-grown, and they are real diamonds. Same hardness, same sparkle, same chemical structure as mined ones.
Created in a lab, not pulled from the earth: better for the planet, ethically sourced, and more accessible.
Certificate
Every diamond comes with an IGI certificate, the world's leading laboratory for lab grown diamonds. This independent report verifies the diamond's exact specifications and authenticity.
The certificate is included in the package.
Metal
14K gold is durable and the most popular for daily wear. 18K gold is purer and slightly softer with a richer color.
Platinum is the premium choice. Heavier, naturally white, and hypoallergenic.
Shank Width
The shank is the band that wraps around your finger. Standard widths are 1.5–2 mm.
Thicker bands feel more substantial; thinner bands look delicate. We can adjust the width to your preference.
Total Carat
The total carat weight of all the diamonds, excluding the main stone.
Side Stone Color
The color grade of the side diamonds. We match them closely to the main stone so the whole ring looks consistent.
Side Stone Clarity
The clarity grade of the side diamonds. Matched to the main stone so the entire setting reads as one unified piece.
Side Stone Origin
Side stones are also lab-grown. Same ethical sourcing and quality standards as the main diamond.
Ring Description
Free Worldwide Shipping
Free FedEx delivery, fully insured and requiring a signature upon delivery.
United States: 1 to 2 business days
International: 3 to 7 business days
Prefer FedEx hold for pickup at a nearby location? Contact us at support@next-diamonds.com after placing your order and we will arrange it.
International orders may be subject to import taxes depending on local regulations.
Discrete Packaging
Every shipment arrives in a plain FedEx-branded box. The shipping label contains no jewelry references, no company name, and no logo.
Production Times
Each ring is crafted to order. Production takes up to 10 business days based on your selected ring size and metal.
30-Day Returns
Return your purchase within 30 days for a full refund. Simply contact us at support@next-diamonds.com and we will send you a prepaid return label at no cost.
Free Engraving
Personalize your ring with up to 25 characters at no extra cost.
Add your engraving directly on the product page before adding it to cart.
Free Resizing
Free resizing for up to 90 days after delivery. All sizing adjustments are free of charge.
Lifetime Warranty
Manufacturing defects are covered for life. Stone replacement is covered for 5 years.
Routine polishing, prong tightening, and rhodium re-plating are always complimentary.
Diamond Authenticity
Every diamond is graded and certified by IGI, one of the world's leading gemological labs.
The original certificate ships with your order. It documents the diamond's exact 4Cs, measurements, polish and symmetry, and authenticity.
