This sapphire from Kashmir has an intense velvety blue color. – Photo: Robert Weldon/GIA ... and color banding. Generally, inclusions make a stone less valuable. Price can drop substantially if the ...

This 1.36 ct light bluish violet sapphire displayed an ... When removed from the DiamondView, the stone had completely changed color to brown (figure 3, left). After about 15 minutes in natural ...