$475Median
3520Sold (12 mo)
$175Last sale
Quartz with Dumortierite
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Glassy gemmy set of two colorless crystals of quartz with attractive blue inclusions of dumortierite. In good condition. Size provided for the larger of the two examples.The Vaca Morta quarry, situated in the Serra da Vereda region of Bahia, Brazil, is located within the ancient metasedimentary rock formations of the Proterozoic Espinhaço Supergroup. Geologically, the area is characterized by highly deformed and metamorphosed sequences that include quartzites, schists, and localized massive mineral pods shaped by extensive regional tectonic activity. Historically, mining and quarrying operations in this mountainous terrain have targeted the unique metamorphic rocks and quartz veins, gaining international renown in the mineral collecting and lapidary markets for producing exceptional decorative stones and crystal specimens.Dumortierite is a fibrous or acicular mineral that frequently occurs here as vibrant blue inclusions trapped inside highly transparent, gemmy colorless quartz crystals. These inclusions often form delicate, hair-like bundles, wispy plumes, or dense radial clusters that appear to float inside the host quartz, creating a striking visual contrast that makes specimens from this Bahian locality exceptionally prized by collectors and gem cutters.
Product details
SpeciesQuartz, Dumortierite
SizeThumbnail
Dimensions1.5 x 0.6 x 0.6 cm
Added on08/05/2026
LocalityBrazil, Bahia, Vaca Morta quarry
Current owner
Unknown Owner
Acquired 08/2026
Previous owners
| Date | Collector | Acquisition price |
|---|---|---|
| — | Weinrich Minerals | Not disclosed |
Learn more
Mineral guide
Learn about Quartz
a versatile mineral with clear, milky, and colored varieties; crystal forms, formation clues, and tips for identifying amethyst and citrine.Regional guide
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