What are the meaning of number in gold 0750 18 k?

Question

What are the meaning of number in gold 0750 18 k?

Answer 1

if you have an object (1 kg for example) and 750 g of them it's only gold and rest of 250 g other metals(Silver or cheap metals) then this 750 it's title.

Pure gold has 24 K  then 18 K its

18/24= 3/4 = 0.75 or 750 title.

Answer 2

The numbers are each different ways of stating the purity of the gold or other precious metal.



The decimal numbers are in thousandths, so 750 is 0.750, 75% gold and 25% other metals.  Similarly, the K system measures purity in 24ths.  24K gold is pure gold, 18K gold is 18/24, or 3/4 pure gold.

You can convert between the two systems.  To convert K to decimal, divide the K rating by 24.    To convert decimal to K, multiply the decimal fraction 0.x*x by 24.

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