And if you let the folks of FB determine your rock over any lab that's even worse. I'd trust a lab far faster than the opinions of anyone on FB.
As Frank says above, the labs will quote materials it's composed of and the specifics of composition and that's it, they won't commit because there is a lot of "discussion" about what can or should be called nephrite. The individuals discussing the rocks as Frank says, have a very broad and in depth knowledge of the material and no-one has called me on mine because there is a lot of nephrite in BC; I was being a little tongue in cheek when I posted this morning LOL ( edited to add that 3 of them have asked me to send them some)
Mrs. T.
You wouldn't break it; the first one I made had a white line formation fracture that this stone has occasionally and it showed up when I cut the outer hole for the ring but I finished it anyway because there was 1.5mm stone in the shank to hold it and it took the abuse needed to cut and polish it on the pads so a thicker one without the formation lines is a breeze. picture below; I can actually spring it open enough to put some resin in but I think I'll leave it as is to remind me to check for the lines; they.re hard to see sometimes.
The BC govmnt. won't acknowledge any black nephrite in BC so if you can't trust them, who can you??? LOL
