https://www.lockwoodandsloan.com/
Ethically sourced imperial topaz from Lockwood and Sloan. Natural, untreated, stunningly beautiful stones that are sustainably mined near Ouro Preto, Brazil.
imperial topazlockwoodsloan
https://www.christies.com/zh-cn/lot/lot-a-pair-of-imperial-topaz-ruby-and-5363444
A PAIR OF IMPERIAL TOPAZ, RUBY AND DIAMOND EAR PENDANTS, BY JAR
imperial topazpairrubydiamondear