This unique, Blue Dumortierite quartz necklace features a raw, fantasy cut stone set in a sterling silver (925), prong setting with a solid bail. The small box chain is 18 inches. The clasp is a sterling silver spring ring.
Approximate measurements of the stone: 20 mm long by 8 mm wide
Dumortierite quartz is primarily composed of silicon dioxide (SiO2), which is the chemical composition of quartz, along with inclusions of dumortierite (Al₃(BO₃) (SiO₃) ₂), which is an aluminum borosilicate mineral. It was discovered in 1881.
- Color: Dumortierite quartz typically exhibits a blue to violet-blue color due to the presence of dumortierite inclusions, although it can also occur in other colors such as pink, brown, or gray.
- Luster: Vitreous to dull.
- Crystal System: Quartz: trigonal
- Hardness: 7 on the Mohs scale, the same as quartz.
- Crystal Form: Typically occurs as prismatic hexagonal crystals, but often forms massive aggregates with fibrous texture due to the inclusion of dumortierite.
Origin: Brazil
How to clean - This necklace can be cleaned in sterling silver cleaner. Rinse with water after cleaning and dry.