Auction Win: ‘Rainbow’ Topaz Gemstone (natural)
Pickup available at Crystal Castle
Usually ready in 24 hours
Details
Locality: Ponto do Marambaia, Caraí, Minas Gerais, Brazil
Size: 10.2 × 6.6 × 2.97 mm
Estimated value is ~$60.
Topaz is a nesosilicate mineral with the formula Al2SiO4(F,OH)2, prized for its hardness of 8 on the Mohs scale and brilliant vitreous luster. It was named after Topazios Island in the Red Sea, where antique sources likely confused it with peridot. While most common topaz is colorless or pale blue, the rare imperial variety features golden-yellow to pink hues and is exclusively mined in Brazil.
Ponto do Marambaia is a renowned mining locality in Caraí, Minas Gerais, Brazil, celebrated for producing high-quality aquamarine specimens. This site is geologically significant as a primary source of beryl var. aquamarine, with specific claims like the Batatal and Papamel claims located directly within the locality yielding notable collector material. Collectors value Ponto do Marambaia for its consistent production of gem-grade aquamarine, making it a key destination for those seeking fine Brazilian beryl specimens. The locality remains an important reference in the global aquamarine market for its distinct crystal quality and color.
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