Friar House Antique Jewellery
What is a topaz gem stone?
What is a topaz gem stone? The topaz gemstone is a silicate mineral of aluminium and fluorine. It is one of the hardest naturally occurring minerals (Mohs hardness of 8) and is the hardest of any silicate...
What is a topaz gem stone?
What is a topaz gem stone? The topaz gemstone is a silicate mineral of aluminium and fluorine. It is one of the hardest naturally occurring minerals (Mohs hardness of 8) and is the hardest of any silicate...