【Spencer, Ida】Spencer Opal Mine Idaho: 7 Powerful Trends Shaping 2026
Editor’s NoteThis article explores the growing significance of Idaho’s Spencer Opal Mine, a premier U.S. source for vibrant volcanic opals. We…
Play-of-Color
【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…