THE 2-MINUTE RULE FOR CALUANIE MUELEAR OXIDIZE HS CODE

Heat can possibly improve or spoil gemstone coloration or clarity. The heating method continues to be well known to gem miners and cutters for centuries, and in lots of stone forms heating is a common follow. Most citrine is produced by heating amethyst, and partial heating with a powerful gradient results in "ametrine" – a stone partly amethyst