22 carat gold
920 is 92.0% Gold or 22K Gold.
417 - 10K gold 500 - 12K gold 585 - 14K gold 666 - 16K gold (gold teeth and fillings) 750 - 18K gold 792 - 19K gold (used in portugal) 833 - 20K 916 - 22k gold 999 - 24K gold
To calculate the value of 22kt gold for 12.5 grams: Convert grams to ounces: 12.5 grams = 0.441 ounce Multiply the value of gold per ounce ($920) by the weight in ounces: $920 * 0.441 = $406.92 Therefore, 22kt gold weighing 12.5 grams is worth approximately $406.92.
10 percent of 920 = 92 10% of 920 = 10% * 920 = 10%/100% * 920 = 92
If you mean 9/20 as a decimal then it is 0.45
80% of 920 = 80% * 920 = 0.8 * 920 = 736
TJ is probably the initials of the jeweler who made the item. 585 = 14K Gold. European jewelers use the metric system for marking gold content. 375 is 37.5% Gold or 9K 416 is 41.6% Gold or 10K 585 is 58.5% Gold or 14K 750 is 75% Gold or 18K 919 or 920 is 91.9% Gold or 22K
920
920
If you mean number its 920-928-3717
920