Understanding Jewellery Sizing

Every piece has its own dimensions. Use the measurements on the individual product page rather than choosing by appearance alone. All measurements below are in millimetres (mm).

Understanding gauge

Gauge describes the thickness of the part that passes through a piercing. A higher gauge number means a thinner bar or wire. Common approximate conversions are 20G = 0.8mm, 18G = 1.0mm, 16G = 1.2mm and 14G = 1.6mm. These are conversion examples, not a recommended size for everyone.

Belly rings: wearable bar length

Wearable bar length is the distance between the ends or decorative attachments, excluding the balls and charms. On a curved barbell, use the stated wearable length rather than the overall height of the jewellery. Charm dimensions describe the decoration and do not indicate the fit of the bar.

Septum rings: inner diameter

Inner diameter is the distance across the inside opening of the ring, not the outside edge. Check both the gauge and inner diameter. Decorative stones can change the overall appearance without changing the stated inner diameter. For non-circular designs, refer to the product's specific measurements.

Bracelets and cuffs

Check whether the listing gives an inner diameter, inner circumference, opening width or cuff width. These measurements describe different parts of the piece. Measure your wrist circumference with a flexible tape without pulling it tight, then compare it with the listing. Do not assume a cuff is adjustable unless the product page says so.

Before you order

  • Read the dimensions for the exact product and variant you are choosing.
  • Compare them with a piece you already know fits comfortably.
  • Do not estimate size from model or close-up photographs; images may be enlarged.
  • If you do not know your piercing size, ask a professional piercer to confirm the measurements before ordering.

Need clarification about a product's measurements? Contact us with the product name or link before placing your order.