- Nov 3, 2009
Any color, apparently & any origin. I hadn't seen this -- I suppose it's true?The major gem laboratories have decided that any copper bearing Tourmaline can now be called Paraiba in the trade and will certify them as such.
Many sellers call spinel "cobalt blue spinel" and that is allowed, even though there may not be cobalt, but it is deceiving. If the stone is advertised as just "cobalt spinel," it better have cobalt in it.crasru|1314851856|3007144 said:He probably meant, "blatant".
It has become confusing. Like "cobalt"spinel which may contain no cobalt.