Key takeaways
Knowing how to check 18-karat gold purity helps you verify your jewellery before buying, selling or pledging it.
- 18-karat gold contains 75% pure gold and 25% other metals. It is also known as 750 gold.
- Check the BIS hallmark and the purity mark on your jewellery to identify its declared gold purity.
- Look for the six-digit Hallmark Unique Identification (HUID) code and verify the hallmark details using the BIS Care app.
- Magnet tests and visual checks cannot confirm gold purity on their own.
- Professional testing by a qualified jeweller or recognised testing centre can help verify the gold’s purity.
- 18-karat gold is commonly used for diamond-studded and designer jewellery because it offers a balance of gold content and durability.
Before buying or pledging gold, verify its purity and net weight to understand how its value may be assessed.
