Answer
May 30, 2025 - 08:06 AM
The numbers on gold necklaces typically indicate the purity or karat of the gold used in the jewelry. For example, a marking of "14K" means the necklace is made of 14-karat gold, which is 58.3% pure gold, while "18K" signifies 18-karat gold, which is 75% pure. Sometimes, you might also see a three-digit number like "585" or "750," representing the same purities in parts per thousand.
