karat gold,

🗣 SL提问: karat gold

✍️ Ai批改: Karat Gold refers to the purity of gold, measured in karats (K or kt), indicating how much of the metal is pure gold versus alloyed metals (like copper, silver, or zinc)、Pure gold is 24K, but it's too soft for most jewelry, so it's often mixed with other metals for durability.

Gold Purity Breakdown:
| Karat (K) | % Pure Gold | Common Uses |

| 24K | 99.9% | Investment (bullion, coins), high-end electronics (too soft for jewelry) |
| 22K | 91.7% | Traditional jewelry (e.g., Indian, Middle Eastern designs) |
| 18K | 75% | High-quality jewelry (durable yet retains rich color) |
| 14K | 58.3% | Most popular for jewelry (balance of purity and strength) |
| 10K | 41.7% | Affordable jewelry (common in the U.S., harder but less gold-rich) |
| Below 10K | <41.7% | Not legally considered gold in some countries (e.g., EU requires ≥9K)、|

Key Notes:
24K gold is nearly pure but scratches/bends easily、
Lower karats (10K–14K) are more durable for daily wear (e.g., rings)、
Color variations (yellow, white, rose gold) depend on the alloy mix、
Hallmarks (e.g., 750 for 18K) certify purity in many countries、

Choosing Karat Gold:
Jewelry: 14K or 18K for durability、
Investment: 24K bars/coins、
Budget: 10K offers affordability、

Would you like details on specific gold types (e.g., white vs、rose gold) or how to verify purity?