Ask The Experts

How do I measure specific gravity?

1 post / 0 new
rrouch
rrouch's picture
Offline
Joined: 04/08/2011
Posts: 6
How do I measure specific gravity?

I have noticed that specific gravity (SG) is always given in the table of a gem's physical properties. How do I use this information to ID gems? Is there any inexpensive way of measuring SG?