how can i convert my kdm gold jewellary to hallmark jewellary
Yes can be white Gold hallmark in gold metal alloys Ring.
hallmark rate
The hallmark for 18ct gold is typically "750," indicating that the gold is 75% pure gold. This hallmark is often accompanied by a specific symbol or maker's mark to further identify the origin of the piece.
220 is not a gold hallmark. The lowest number that is used as a gold hallmark is 333 (meaning 33.3% gold content, which is 8 carat, the lowest gold carat). 220 is actually the hallmark for bronze, which is a copper alloy called "Alloy 220" (or sometimes sold as "commercial bronze"), not gold.
916 today's hallmark gold rate in kolkata
what is 275 gold hallmark
Yes
is AJ a gold mark
Hallmark 875 = 21 karats (karat is a unit of measurement of gold to an alloy - 24 karat is pure gold).
The Hallmark, Gilbert Marks....london 1861- 1905
The 730 hallmark on gold jewelry indicates a gold content of 73%, so the piece is just shy of the 75% gold content that signifies 18 karat.