gemstones

Ruby Sizes

Ruby Sizes

Because of their extreme rarity, ruby sizes expressed in carats affect the prices of these precious gemstones on an exponential basis. This means that the larger it is, the more expensive it becomes on a per carat basis.

Blue Topaz Sizes

Blue Topaz Sizes

It is extremely difficult to find naturally occurring blue topaz that can be produced nowadays through heat treatment and irradiation of differently hued topaz gemstones. Because of their rarity, prices of blue topaz sizes that are larger than 2 to 3 carats increase exponentially on a per carat basis.