In Reply to: So Baldie posted by makas family on Tuesday, 3. May 2011 at 11:50 Bali Time:
17,18&19% are all around 4ct. The percentage is worked out from 24ct. So times the percentage by 24 then divide by 100 to get the carats. eg. 75% x 24 /100 = 18 ct
18 ct is the best for colour & durability in jewllery.