More Information on the Purity of Gold
- 8ct or 333 (parts per 1000) or is 33.3% gold (usually east European)
- 9ct or 375 (parts per 1000) or is 37.5% gold (mainly Commonwealth)
- 10ct or …actually never seen it a 416 mark but is 41.6% gold (USA)
- 12ct or 500 (parts per 1000) or is 50% gold (usually old watch cases)
- 14ct or 585 (parts per 1000) or 58.5% gold (Asian for overseas market)
- 15ct or 625 (parts per 1000) or 62.5 % gold ( Discontinued c1935)
- 18ct or 750 (parts per 1000) or 75% gold
- 22ct or 916 (parts per 1000) or 91.6% gold (mainly Asia) 24ct or 1000 (parts per 1000) or PURE gold
