I'm not sure if this is right or not, but I tried looking it up and this is what i found.
Platinum mark
777 ppt pure platinum alloys
"ppt" parts per thousand
Your chain is a platinum chain with 777 p.purity mark
What is the spiritual meaning of 777?
777 means seven hundred and seventy seven
777 is the God number. It means to be with Christ and to do the right thing (integrity).
i have one ring and is mark inside 777 what hi means ,is platinum?
I'm assuming you mean 777 vs. 747. If that's the case, it's the 777.
i have one ring and is mark inside 777 what hi means ,is platinum?
What does this mean in jewelry?
39% of 777 = 39% * 777 = 0.39 * 777 = 303.03
12% of 777 = 12% * 777 = 0.12 * 777 = 93.24
What does lead comliant in jewelry mean
What does MNSN On sterling jewelry mean
The value of gold is not determined by a hallmark but the amount of gold within the jewelry. There should be another symbol showing 10K, 14K, 18K, or 24K on the item. These number represent the amount of gold in carets of the item and by law they have to be listed. If it doesn't have this it is most likely not gold but a base metal with a gold overlay. If it is the value is nil. Take your item to a jeweler to determine it's value.