【Guangzhou, C】The More Fluid the Play-of-Color and the Higher the Hardness, the More Valuable the Genuine Opal
Editor’s NoteThis article highlights the strong demand for colored gemstones at auction, using opals as a case study. It notes that while…
Editor’s NoteThis article highlights the strong demand for colored gemstones at auction, using opals as a case study. It notes that while…