Topaz is considered as the birthday stone of Nov.,and also called the " Stone of Friendship".The biggest weighs 117KG, from Brazil, where is the main source for topaz.
Topaz had not drwan important attention until 18th century,at the early 19th century,it had been very famous and popular in UK and French .Among the Portugal royalty jewelry,there was one big Topaz with weight 1680 cts,name "Braganca Diamond".
