Of every 1000 parts (100%) of the metal, 825 (82.5%) are gold.
So in the item there are 175 parts (17.5%) that are not gold
As gold is soft then usually other metals added to make it harder.
825 is not gold 825 is probably 925 meaning sterling silver blurred or miss stamped
825 is a reference to the gold purity i.e. 82.5% pure.
The numbering system for gold is generally the karat scale. But theoretically, there could always by 825 gold. It would simply mean 82.5% gold, which is about 20 karat.
825 means the gold mount is 82.5% pure.
How much is it worth
82.5% gold /silver what ever the metal is
10k Edit by Cjulsh 10k is incorrect. 10k jewelry would be stamped 417 which is the amount of gold content. 10k is 41.7% gold. 825 is a lower grade of silver...most silver pieces would have a stamp of 925 which is 92.5% silver. Some pieces will use a lower grade silver 825 or 82.5% silver.
That probably means it is the 825 th copy if it is somethin like a store bought necklace. If it is gold, iit means it is fake. ---------------------------------------- Most likely it is .825 grade silver if this ring is silver coloured . Still silver but lower grade than .825 sterling
825 as a fraction = 825/1
percent of 825 = 82500%825 * 100% = 82500%
$660=.8X82580 % of 825 = (80/100) of 825 =(80/100)*825=(8/10) *825=0.8*825660 dollarsTherefore, 80 percent of 825 dollars is 660 dollars.Source: www.icoachmath.com
825.0 and 825/1 are both equivalent to 825