Heat Treatment The application of heat to enhance the color and/or clarity of gemstones has been a common practice around the globe for centuries. Bu ko'plab rangli qimmatbaho toshlar uchun standart parlatish va pardozlash jarayonining bir qismidir. Bunaqa, u zargarlik sanoati va Amerika Gem Savdo Assotsiatsiyasi tomonidan qabul qilinadi. The enhanced [...]
