Gold Price by Weight: A Simple Framework
Gold prices are commonly quoted per unit of weight, so unit consistency matters when estimating transaction value.
How the math works
Gold is quoted per troy ounce (about 31.1 grams) or sometimes per gram directly — converting between units before comparing prices is essential, since a price 'per gram' and 'per ounce' can look deceptively similar in raw number size.
Worked example
If spot gold is $2,000/troy oz, that's about $64.30/gram. A dealer quoting $65/gram is charging roughly a 1% premium over spot; one quoting $2,050/oz is charging about 2.5% over spot — expressed in different units, the two aren't directly comparable without converting first.
What to watch for
- Always convert to the same unit (grams or troy ounces) before comparing two quoted prices
- Karat/purity (10k, 14k, 18k, 24k) further changes the effective price per gram of actual gold content
- Jewelry prices include craftsmanship value on top of raw metal weight, which isn't captured by a pure gold-price calculation
Practical takeaway
Convert every quote to price-per-gram of pure (24k-equivalent) gold before comparing dealers — this removes both the unit and purity differences that make raw prices misleading.