# The Lupin Nose Screw

The BIS hallmark is a system that provides certification of gold that indicates the purity of the metal. It authenticates that a piece of gold jewelery purchased, conforms to the standards as laid by the Bureau of Indian Standards which is the national standards organization in India.

This hallmarking of gold jewelery was established in April 2000. It consists of a BIS logo, a 3 digit number that indicates the gold purity, the logo of the assaying center along with the logo or the code of the jeweler and the code that indicates the hallmarking date. This hallmarking has a high reputation among the jewelery industry in India.

## Details

- **Price:** 0.0 INR
- **Vendor:** Aggarwal jewels
- **Type:** Nose pins
- **Tags:** Authentication certificate, Hallmarked Jewellery

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| 0.0860 CT / GROSS WEIGHT = 0.36 GRAM / GROSS WEIGHT = 0.31 GRAM | 0.00 INR | In stock |
| 0.0860 CT / GROSS WEIGHT = 0.36 GRAM / NET WEIGHT = 0.29 GRAM | 0.00 INR | In stock |
| 0.0860 CT / NET WEIGHT = 0.346 GRAM / GROSS WEIGHT = 0.31 GRAM | 0.00 INR | In stock |
| 0.0860 CT / NET WEIGHT = 0.346 GRAM / NET WEIGHT = 0.29 GRAM | 0.00 INR | In stock |

## Images

- Gold nose screw with round brilliant diamond and three ball prongs
- Gold nose screw stud with rectangular setting and clear diamond accent
- Gold nose screw with diamond-front setting and smooth round back cap
- Gold nose screw with square bezel diamond at the end of the post
- Gold nose screw with large round diamond and three silver ball posts
- Gold nose screw with diamond setting and smooth round backing end

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> Source: [Aggarwal Jewels](https://aggarwaljewels.com/products/the-lupin-nose-screw)
> Updated: 2026-06-24