Will Asha test positive on a diamond tester?
No, it will not. Even though the upper layer of Asha contains SP3 carbon diamond bonds (same carbon bonds as a genuine diamond) the non-diamond core does not have the same thermal conductivity. Therefore, the stone will test negative as a diamond. Note that diamond testers simply measure *heat conductivity*, they do not actually detect the presence of “SP3 carbon, or diamond”. Thus, traditional diamond testers are sometimes also fooled by colorless sapphire and Moissanite.
