Hallmark verification (look for BIS marks like 22K, 18K, etc.)
- Acid test (using nitric acid to check purity)
- Magnet test (gold isn't magnetic, but some alloys might be)
- Density test (gold is very dense)
- Silver Testing:
- Hallmark verification (look for marks like 925 or Sterling)
- Magnet test (silver isn't magnetic)
- Ice test (silver conducts heat well, so it'll melt ice faster)