Sizing Guide

Our rings are available in whole US sizes 8–12, though availability varies by style. Half sizes are not currently available. Our rings are made from ASTM F136 titanium alloy, which holds its shape and generally can't be resized the way gold or silver bands can, so choose carefully. Read more about whether titanium rings can be resized.

Band width also affects fit: bands 6 mm or wider can feel snugger than narrower bands of the same size. The chart below lists reference dimensions for standard US ring sizes. Match your finger measurement to the Inner Circumference column, then confirm your fit with the ring sizer included in your order.

Use a thin, non-stretch string or a narrow strip of paper. Wrap it snugly around the base of the finger you want to measure, without pulling tight enough to compress your skin. Mark where the ends meet, lay it flat, and measure the length in millimeters. Repeat two or three times, then compare your result with the Inner Circumference (mm) column in the chart above. For the most accurate reading, measure when your hands are at a normal temperature, ideally later in the day. If your knuckle is wider than the base of your finger, make sure the ring can slide over it comfortably.

Choose a ring that already fits the same finger comfortably. Lay it flat and measure straight across the inside, from inner edge to inner edge, not the outer edges. Compare that inner diameter with the Inner Diameter (mm) column in the chart above. Sizing varies by brand and band width, so use this as a reference rather than relying on the size number alone.

Every ASHLUME order includes a physical ring sizer in the envelope resting on top of the product when you open your order. Use it to check your size before you wear your piece, and keep the original tag attached until you're sure of your fit. If your order includes The Fracture, check your fit before breaking its plaster casing: a broken casing is final sale unless there is a verified manufacturing defect.

Keep the sizer for future orders or when you're buying a gift. Returns and exchanges are available within 30 days of delivery under our Shipping & Returns policy, and we cover shipping on the first exchange for each order.

If you're between sizes, size up. For a standard-width band only, if your finger circumference is no more than 1 mm above the smaller size's circumference in the chart, the smaller size should still fit. Don't use that exception for a wide band (6 mm or wider); choose the larger size instead. Titanium doesn't stretch, so a slightly larger size leaves room for natural finger swelling and lets the ring clear your knuckle. It should pass over the knuckle with slight resistance, without feeling painfully tight.

Still unsure? Email support@ashlume.com and we'll help you find your fit.

Available lengths: 7.5" (19.1 cm) / 8.0" (20.3 cm) / 8.5" (21.6 cm). All lengths are measured end to end, including the clasp.

Choose a bracelet slightly longer than your wrist so the links can move naturally. The chart below already builds in that room: find your wrist circumference in the Optimal Wrist Range columns to see your recommended length. As a quick check, your bracelet should be 0.5 to 1 inch (1.3 to 2.5 cm) longer than your wrist. Titanium doesn't stretch, so the links move freely but the overall length stays fixed.

• Flush Fit: If your wrist is at the top of a range, the bracelet sits close to your wrist with minimal movement.
• Relaxed Fit: If you prefer more movement, or "drape," choose the next length up, if available.

If your wrist falls between two ranges, choose the longer length. If your wrist is under 6.5" (16.5 cm) or over 8.0" (20.3 cm), email support@ashlume.com and we'll help you find your fit.

Wrap a flexible tape measure around your wrist, just below the wrist bone. Keep it snug against your skin without pulling it tight or leaving a gap. Read the circumference in inches or centimeters, measure twice to confirm, then find that number in the Optimal Wrist Range columns above. You can also use a string or paper strip: mark where the ends meet, lay it flat, and measure it against a ruler.

Unfasten a bracelet that fits you comfortably and lay it flat and straight. Measure from end to end, including the clasp, the same way we measure ours, and compare the total length with our available bracelet lengths.

Available lengths: 20" (50.8 cm) / 22" (55.9 cm). All lengths are measured end to end, including the clasp.

Necklace length affects where the chain falls against your collarbone, upper chest, and neckline. Exact placement varies with neck circumference, shoulder width, build, and neckline.

Thicker necks and broader builds take up more of the chain, so the same length sits higher. If you have a thicker neck or want extra room, start with the 22" length.

Cut a non-stretch string to exactly 20" (50.8 cm) or 22" (55.9 cm). Hold the ends together at the back of your neck so the string forms a loop. In a mirror, check where the front of the loop sits against your collarbone and the neckline of your favorite T-shirt. Try both lengths before choosing.

Unclasp a necklace whose fit you already like and lay it flat and straight. Measure from end to end, including the clasp, and compare the total length with our 20" and 22" options.