【Lightning Ri】Black Opal Mining: Value, Price & Rarity In 2025
Editor’s NoteThis article explores the captivating world of black opal, a gemstone prized for its rarity and spectacular play of color. We delve into…
Gemstone Geology
【Mogok, Myanm】Myanmar: The World’s Most Exotic and Romantic Gemstone Origin
Editor’s NoteThis article explains the fundamental density-based separation process used in gemstone mining, tracing the historical adoption of the…