57769560_s_Facet_Rough___PrettyRock_com__Fact
[#] 2 [Myth] You only have to do one test to identify a gemstone. [Fact] 
Most gemologists conduct at least 3 tests if not more.
Gemology, Gem Rough,Gemology,Gem Identification Tools,Facet Rough - PrettyRock.com
Fact