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The intense violet color
Chemical formula: The chemical formula of stilbite is NaCa4 (Si27Al9)O72·28 (H2O)
The fibrous inclusions in tiger's eye are typically made up of mineral fibers such as crocidolite
Kristallform und Größe von Stück zu Stück
trockenen oder leicht angefeuchteten Tuch – keine Bürsten
Bergkristall Handstufe (628g) freeform The intense violet colorThe Rock crystal is a fascinating gemstone that has special meaning in different cultures. Here are some important properties of rock crystal: Chemical composition : Rock crystal belongs to the quartz group and consists mainly of silicon dioxide (SiO ) . Crystal system : Rock crystal crystallizes in the trigonal crystal system and forms prismatic crystals with six sides and pyramidal ends. Double terminated crystals are common. Color and transparency
