Blue topaz is the state
gemstone of the US state of Texas. Naturally occurring blue topaz is quite
rare. Typically, colorless, gray or pale yellow and blue material is heat
treated and irradiated to produce a more desired darker blue.
Ruby is one of the highest valued
colored gemstones, in fact, large rubies can fetch higher prices than
equivalently sized diamonds. Ruby has been prized for centuries because of its
excellent Mohs scale hardness of 9, along with its treasured rich red hue and
vitreous luster. Ruby is a variety of corundum that gets its red color from
chromium. Corundum that occurs in any color other than
red, is classified as sapphire. In its pure form, corundum is
completely colorless. The word "corundum" comes from the Tamil
"kurundam", meaning "ruby sapphire"
Stone
- Blue Topaz / Ruby
Stone
Size - 3MM / 5X7
Stone
Shape - Round /Pear
Weight
- 3.25Gms
SKU -
CSER-2536