There are 28.35 grams in a troy ounce of 14K gold.
A troy ounce (31.1035g) is the standard unit for precious metals, but 14K gold is only 58.3% pure. Thus, a troy ounce of 14K gold contains 28.35 grams of actual gold (31.1035g × 0.583). The remaining weight is alloy metals like copper or silver.
Key Details About 14K Gold Weight
- Pure gold content: 58.3% (14/24 parts gold).
- Troy vs. avoirdupois ounce: Gold uses troy ounces (31.1035g), not standard ounces (28.35g).
- Alloy impact: The 41.7% non-gold metals add durability but reduce total gold weight.
- Common uses: Jewelry, watches, and dental work due to its balance of purity and strength.
Weight Comparison: 14K vs. Other Gold Karats
| Karat | Gold Purity (%) | Grams of Pure Gold per Troy Ounce | Alloy Metal Content (%) |
|---|---|---|---|
| 24K | 99.9% | 31.10g | 0.1% |
| 18K | 75% | 23.33g | 25% |
| 14K | 58.3% | 28.35g | 41.7% |
| 10K | 41.7% | 12.96g | 58.3% |
How to Calculate Pure Gold in 14K Items
- Weigh the item in grams (use a jewelry scale for accuracy).
- Multiply by 0.583 (14K purity) to get pure gold weight.
- Example: A 10g 14K ring contains 5.83g pure gold (10 × 0.583).
- For troy ounces: Divide grams by 31.1035 to convert to troy ounces.
Why 14K Gold Weighs Less Than Its Total Mass
- Alloy dilution: Metals like nickel or zinc are mixed with gold to increase hardness.
- Market standards: Jewelry is rarely 100% gold due to practicality (scratch resistance, cost).
- Price impact: You pay for the total weight, but only the 58.3% gold portion holds intrinsic value.
Common Mistakes to Avoid
- Confusing troy vs. standard ounces: A standard ounce (28.35g) of 14K gold contains only 16.52g pure gold (28.35 × 0.583).
- Ignoring hallmark stamps: Check for "14K" or "585" (European purity mark) to confirm karat.
- Assuming weight = value: Gold price is based on pure gold content, not total item weight.