Dumortierite
Dumortierite – a jewelry stone
Dumortierite is a stone mainly in shades of blue, navy, or purple. It belongs to the group of silicates, and its name comes from the paleontologist M.E. Dumortier, who discovered this mineral in the 19th century in France. Dumortierite stones are found, among others, in France, Italy, Austria, Norway, Poland (around Karpacz), Canada, the USA, Brazil, Madagascar, and Sri Lanka. It is a decorative stone with white or black spots on its surface. Dumortierite mineral is relatively rare, which is why it is highly valued in jewelry making. Due to its intense blue color and natural patterns, it is mainly used in jewelry production. Dumortierite stone is hard, resulting in a smooth surface when polished, which adds elegance to jewelry. Dumortierite often occurs together with beryl, tourmaline, and topaz. The dumortierite mineral is found in pegmatitic and metamorphic rocks.
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Dumortierite stone – properties
Dumortierite is an aluminum borosilicate. Its hardness on the Mohs scale is 7-8.5, while its density is 3.26-3.41 g/cm³. It forms crystals in needle, prismatic, and columnar shapes and occurs in metamorphic rocks and pegmatites. Its color – blue, purple, or navy – and its intensity depend on the deposit from which it originates. Sometimes dumortierite stones can also be found in other colors such as red, black, gray, or brown. On the surface of the stone, its colors intermingle, creating various patterns. Dumortierite stones have a vitreous, silky luster. Blue dumortierite stones resemble sodalite and lapis lazuli in color and are the most valuable in the jewelry industry.
Dumortierite stone – applications
Dumortierite has a wide range of applications. It is used in the ceramic industry, in the production of refractory materials, but also has collector’s value. As a gemstone, however, it is mainly used in the production of jewelry such as earrings, necklaces or rings. Dumortierite is a highly valued gemstone as it is a cheaper alternative to lapis lazuli that can also be used to make figurines and cameos. In our online store you will find both dumortierite cabochons and flats in various shapes and sizes.
