The specific gravity values, rather less used in gem testing, in most cases increase with increasing refractive index and fall within limits into defined groups, and therefore may be readily found in the table. ![]() Refractive Index is the most important testing factor, so the values given for these are published in ascending order. You can also use the arrow mark to sort in various orders. You Can use below search bar to find the specific gemstone by typing it’s gemstone name example “corundum”. ![]() Note: We have Tried our best to provide gemstone identification chart Which is available around website and collected from many sources from authentic books which referenced by GIA.
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