- Sep 20, 2008
Please take this somewhere else. Topaz and tourmaline have low RI''s and the RI he told you of 1.8 is very high, which firmly indicates it''s NOT a topaz or tourmaline (both have RI''s around 1.6). Is this a gemologist? That stone doesn''t look to have a very high RI either, but it is difficult to tell with step cut stones from photos alone.