Them Jewelers Size & Fit Guide 2026: Ring Sizes, Chain Lengths and Hoop Diameters
It happens more often than anyone admits. The custom ring arrives, the name is spelled perfectly, the gold is gleaming, and it stops at the knuckle. Or the anklet you ordered as a beach-trip gift turns out to be bracelet length. With personalized jewelry there's no easy fix: a piece made with someone's name on it can't simply go back on the shelf.
That makes sizing the quiet make-or-break step when you order from Them Jewelers, the New York shop that signs its pages The M Jewelers. Olivia Reviews pulled together the brand's ring size chart, its string test and the length and size options listed on its rings, chains, bracelets, anklets and hoops in October 2026, so you can order once and get it right.
Quick take: Them Jewelers lists US ring sizes 3 to 9 with matching circumferences in millimeters, but each ring offers its own range, from pinky-only sizes 3–4 to half sizes up to 10. Necklaces typically come in 16" to 24" options, bracelets and anklets use extenders, and hoops are sized by diameter in inches. Personalized pieces are final sale, so measure before you buy, and see today's Them Jewelers deals once you know your numbers.
Ring Sizes: The Brand's Chart
The size guide on themjewelersny.com matches each US ring size to an inside circumference:
| US ring size | Circumference |
|---|---|
| 3 | 44.2 mm |
| 4 | 46.8 mm |
| 5 | 49.3 mm |
| 6 | 51.9 mm |
| 7 | 54.4 mm |
| 8 | 57 mm |
| 9 | 59.5 mm |
The string test, step by step
- Wrap a piece of string around the base of your finger. The brand's guide uses the pinky in its instructions, which fits a shop that sells plenty of pinky rings; the same method works on any finger.
- Mark where the string meets its starting point with a pen.
- Lay it flat and measure the length against a ruler in millimeters.
- Match the nearest length in the chart to your ring size.
If you land between two sizes, look at which sizes the ring you want is actually made in. That varies more than you might expect.
Which Sizes Each Ring Comes In
| Ring | Price (USD) | Sizes listed | Good to know |
|---|---|---|---|
| The Classic Double Heart Cut Name Ring | $190 | 4–10, with half sizes | Gold vermeil or sterling; about 20 business days in production |
| The Gothic Letter Ring | $52 | 5, 6, 7, 8 | Single lowercase initial, A–Z |
| The Mulberry Script Signet Ring | $48 | 3–8 | Gold-plated silver with diamond-tip engraving |
| The Oval Stone Ring (Set of 2) | $49.70 | 6, 7, 8 | Cubic zirconia; clear or yellow stones |
| The Clara Pinky Ring | $64 | 3, 4 | 18KT gold-plated brass with cubic zirconia |
The pattern is worth noticing. Name rings that are made to order, like the Double Heart Cut Name Ring, offer the widest range with half sizes, while ready-made stacking and pinky rings come in a few whole sizes only. If you wear a 5.5, the Double Heart ring can match you exactly; for the Gothic Letter Ring you'll have to round to a 5 or a 6.
A timing note on custom rings
The Double Heart Cut Name Ring listing estimates about 20 business days in production and says that choosing expedited shipping won't prioritize the order. If you're shopping for a date, that's roughly four weeks before it even ships.
→ Check the latest Them Jewelers coupon codes and deals
Necklace Lengths
Most personalized necklaces on the site let you pick a chain length, and the menus usually run in 2" steps: 16", 18" and 20", with some nameplates offering 22" and 24" as well. A few styles are fixed. The Engraved Marathon Charm Necklace, which lets you choose a city such as NYC, Tokyo, London or Chicago, comes on a 20" box chain, from $123.50 in vermeil or sterling.
Chokers work differently. The Solid Gold Curb Chain Choker ($520 in 14KT yellow or white gold) is 12" with a 3" extender and 2.5mm thick, so it adjusts from 12" to 15". The brand lists a production time of roughly one to two weeks for this 14KT chain.
Two practical tips: measure a necklace you already own from end to end, clasp included, and remember that the brand notes 14KT chain weight and thickness can vary with gold prices and what its production team has available at the time of your order.
Bracelets and Anklets: Look for the Extender
Wrist and ankle pieces are built with a small extender chain, which gives you about an inch of play:
- The Tiny Script Nameplate Anklet: 8" plus a 1" extender, 9" in total. It costs $68 in gold- or silver-plated brass, $74 in gold vermeil or sterling silver, and $650 in 14KT gold. Crafted by hand upon order and final sale.
- The Pavé Pearl Initial Bracelet: 7" plus a 1" extender, in shell pearls and 18KT gold-plated brass, $64 with any letter A–Z.
- The Franco Bracelet (Men's): a 4mm chain offered in 7" or 8", in 14KT gold-plated or rhodium-plated brass, $88–$98.
Measure loosely around your wrist or ankle where the piece will sit, then compare with the base length: the extender is there for fine-tuning, not to make up a big difference.
Hoops: Sized by Diameter
The 14KT Essential Hoops are sold by diameter rather than by a size name, which makes comparing easy:
| Hoop | Diameter | Price |
|---|---|---|
| 14KT 0.40" Essential Hoops | 0.40" | $188 |
| 14KT 0.50" Essential Hoops | 0.50" | $198 |
| 14KT 0.70" Essential Hoops | 0.70" | $228 |
| 14KT 0.80" Essential Hoops | 0.80" | $258 |
The 0.50" pair lists a weight of 0.22 grams per hoop, and the brand says this style ships roughly 3–5 business days after purchase, much faster than personalized pieces.
What Happens If the Size Is Wrong
Here's the honest part. According to the Returns & Refunds page:
- Personalized items are final sale and can't be returned or exchanged, so a custom name ring in the wrong size stays yours.
- Exchanges are allowed for non-personalized items only, within 14 days of delivery, or 30 days during the holiday season.
- Refunds carry a 10% restocking fee, except for damaged or defective items.
- Promo-code orders are eligible for store credit only.
- Cancellations are possible within 1 hour of placing an order.
Practical upshot: if you're unsure of a size, start with a ready-made, non-personalized ring, and save the personalized order for when you've measured. Before placing a bigger order, it's worth a quick look at current Them Jewelers offers, keeping the store-credit rule in mind.
FAQ
What ring sizes does Them Jewelers sell?
The size guide covers US 3 to 9, but individual rings vary: the Classic Double Heart Cut Name Ring runs 4 to 10 with half sizes, while pinky styles like the Clara come in 3 and 4.
How long is the nameplate anklet?
The Tiny Script Nameplate Anklet is 8" with a 1" extender, for 9" in total.
Can I exchange a custom ring for a different size?
No. Personalized items are final sale and can't be exchanged.
Are hoops returnable?
Non-personalized, full-price items like the Essential Hoops can be returned or exchanged within the return window, with a 10% restocking fee on refunds.
Final Verdict
Them Jewelers gives you the numbers you need: a ring chart in millimeters, clear chain lengths, extenders on bracelets and anklets, and hoops sold by diameter. The catch is that each piece has its own size range and personalized items can't come back. Measure with the string test, check the exact sizes on the listing, allow for production time, and see the newest Them Jewelers savings before you check out.
→ Check the latest Them Jewelers coupon codes and deals
Olivia Reviews researched Them Jewelers using its official website, product listings and published policies in October 2026. We haven't personally tested these products. We may earn a commission when you buy through our links, at no extra cost to you.