How to Check BIS Hallmark & 6-Digit HUID on Gold Jewellery Before Buying
Learn how to verify the authenticity of 22K and 18K gold items using the BIS Care mobile app and 6-digit alphanumeric HUID stamps.
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Learn how to verify the authenticity of 22K and 18K gold items using the BIS Care mobile app and 6-digit alphanumeric HUID stamps.
A detailed comparison of tensile strength, gold luster, scratch resistance, and resale value across popular purity grades.
| Indian Size | Inner Diameter (mm) | Circumference (mm) | US Size |
|---|---|---|---|
| Size 8 | 15.3 mm | 48.0 mm | 4.5 |
| Size 10 | 15.9 mm | 50.0 mm | 5.25 |
| Size 12 (Common Female) | 16.5 mm | 51.9 mm | 6.0 |
| Size 14 (Common Female) | 17.2 mm | 54.0 mm | 6.75 |
| Size 16 | 17.8 mm | 56.0 mm | 7.5 |
| Size 18 (Common Male) | 18.5 mm | 58.0 mm | 8.25 |
| Size 20 (Common Male) | 19.1 mm | 60.0 mm | 9.0 |
| Size 22 | 19.7 mm | 62.0 mm | 9.75 |
| Indian Size (Anna) | Inner Diameter (Inches) | Inner Diameter (mm) | Hand Fit |
|---|---|---|---|
| 2 - 2 | 2.125 in | 54.0 mm | Extra Small |
| 2 - 4 (Most Common) | 2.250 in | 57.2 mm | Small / Medium |
| 2 - 6 (Most Common) | 2.375 in | 60.3 mm | Medium / Standard |
| 2 - 8 | 2.500 in | 63.5 mm | Large |
| 2 - 10 | 2.625 in | 66.7 mm | Extra Large |