A digital photobook of natural colored stones and jewelry by Hiranya Tangsubkul, G.G, F.G.A
Easy Usage: Grouped by color, the photobook is easy to use when it comes to identifying differences among gemstones that superficially appear similar.
Guidance for novices: Examining a gemstone and unable to recall its name? Start with the color, then try to find photograph which looks similar to your gemstone.