Quick answer: wrap a strip of paper around the base of your finger, mark the overlap, measure it in millimetres and match it to the chart below. Most Oscuro rings are adjustable, but signet styles come in fixed US sizes – that's where this guide helps.
Which Oscuro rings need a size?
Open-band rings like the Coffin Cross Ring, Winged Dragon Ring and Molten Red Heart Ring adjust to fit. These come in fixed US sizes:
- Horned Skull Signet Ring – US 7 to 13
- Pirate Captain Skull Ring – US 7 to 14
- Bat Wing Ring – US 6 to 12
- Turquoise Lion Signet Ring – US 6 to 9
- Leopard Heart Ring – US 7 to 10
Method 1: the paper strip
- Cut a thin strip of paper about 10 cm long.
- Wrap it around the base of the finger you'll wear the ring on. It should be snug but able to slide over the knuckle.
- Mark where the paper overlaps.
- Lay it flat and measure from the end to the mark in millimetres. That's your finger circumference.
- Find the closest number in the circumference column below.
Method 2: measure a ring you already own
Put a ring that fits on a ruler and measure the inside diameter – edge to edge across the middle, not including the metal. Match it to the diameter column.
US ring size chart (mm)
| US size | Inside diameter | Circumference | Approx. Indian size |
|---|---|---|---|
| 6 | 16.5 mm | 51.9 mm | 12 |
| 7 | 17.3 mm | 54.4 mm | 14 |
| 8 | 18.1 mm | 57.0 mm | 16–17 |
| 9 | 19.0 mm | 59.5 mm | 18–19 |
| 10 | 19.8 mm | 62.1 mm | 20–21 |
| 11 | 20.6 mm | 64.6 mm | 23 |
| 12 | 21.4 mm | 67.2 mm | 25 |
| 13 | 22.2 mm | 69.7 mm | 27 |
| 14 | 23.0 mm | 72.3 mm | 29 |
Indian sizes are approximate and vary between jewellers – the millimetre numbers are the reliable ones.
Tips for a better fit
- Measure at the end of the day. Fingers are slightly bigger in the evening and in hot weather.
- Wide bands run small. Chunky signets like the Horned Skull feel tighter – go up half a size if you're between sizes.
- Index and thumb are bigger. Measure the exact finger you plan to wear it on.
- Adjustable rings: press gently to close or open. Don't bend the band back and forth repeatedly.
What about claw and armor rings?
Full-finger rings like the Armor Finger Ring and Beast Head Knuckle Armor Ring have an open, adjustable base and hinged sections, so they fit most fingers. Read our claw ring guide for how they should sit.
Ready to pick one? Browse all statement rings or the claw & armor rings collection.
FAQ
How do I measure my ring size at home in India?
Wrap a thin strip of paper around the base of your finger, mark where it overlaps, measure the length in millimetres and match it to the circumference column in the chart above.
What if I'm between two ring sizes?
Choose the larger size, especially for wide bands and signet rings, which feel tighter than thin rings.
What is US size 8 in Indian ring size?
US 8 is about 57 mm around, which is roughly Indian size 16–17. Indian sizes vary slightly between jewellers, so measuring in millimetres is the safest way.
Can I exchange a ring if it doesn't fit?
Yes. Raise a size exchange within 2 days of delivery; the ring must be unworn with tags and packaging. A ₹99 exchange fee applies.