This is right. White gold used to be made by combining it with nickel to make it harder. Rose gold is made by combining it with copper for hardness also but it gives it a faint copper color. As for the stamp it could be stamped wrong or poured in a mold with the "stamp" right in the mold to save time.Treasure_Hunter said:White gold used to be made with nickel, now it is made by plating gold with rodium...
Sandman said:It is best to test all items yourself instead of asking a jeweler as they will tell you it is a good fake but offer to buy it from you for pennies. An appraisal costs money and they don't do these for free unless you really know the jeweler.