Gemstone: natural dumortierite quartz
Weight: 3,26 ct
Measurements: 12,0 x 8,7 x 5,5 mm
Color: colorless and blue
Clarity: —
Cut: pear cabochon cut
Enhancements: none
Origin: Vaca Morta quarry, Serra da Vereda, Boquira, Bahia, Brazil
Comments: quartz with dumortierite inclusions
Gemological report by Egor Gavrilenko included, see sample report here.
For any questions please contact me by email, I’ll be happy to assist!
xxxxxxxx————xxxxxxxx
dumortierite quartz – 3,26 ct
310
colorless, blue, pear, cabochon, inclusions, Brazil
Weight: 3,26 ct
Measurements: 12,0 x 8,7 x 5,5 mm
Quartz with dumortierite inclusions from the Vaca Morta quarry, located in Serra da Vereda, Boquira, Bahia, Brazil, is a rare and visually striking mineral specimen. This type of quartz is distinguished by the presence of acicular inclusions and radial aggregates of dumortierite inclusions, which give the crystal its characteristic blue to violet-blue hues. These inclusions create unique patterns within the quartz, making each specimen highly unique and desirable among collectors and gem enthusiasts.
The Vaca Morta quarry is renowned for producing some of the finest examples of dumortierite-included quartz in the world. The formation of this mineral occurs through complex geological processes, where dumortierite crystallizes within the silica-rich environment of quartz veins. The result is an aesthetically captivating gemstone with remarkable durability and vibrant coloration.
This rare variety of quartz is typically cut into cabochons or polished specimens to highlight the mesmerizing internal fibrous structures. Some high-quality pieces are also faceted for use in jewelry, offering a unique alternative to traditional blue gemstones. Due to its scarcity and distinctive appearance, quartz with dumortierite inclusions from Vaca Morta quarry is highly sought after by collectors and lapidaries.
Beyond its aesthetic appeal, the geological significance of these specimens adds to their value. The unique conditions that led to the formation of dumortierite-included quartz in Bahia, Brazil, make it an important reference point for mineralogists studying quartz inclusions and regional geology. The continued interest in these specimens underscores their enduring appeal in the world of fine minerals.
