Properties & Information
Tanzanite
TanzaniteSCIENCE / MINERALOGYTanzanite is the blue-to-violet gem variety of zoisite, Ca₂Al₃(SiO₄)₃(OH). It is strongly pleochroic, showing blue, violet, and brownish tones along different directions.GEOLOGY & FORMATIONIt forms in metamorphic rocks...
Tanzanite
TanzaniteSCIENCE / MINERALOGYTanzanite is the blue-to-violet gem variety of zoisite, Ca₂Al₃(SiO₄)₃(OH). It is strongly pleochroic, showing blue, violet, and brownish tones along different directions.GEOLOGY & FORMATIONIt forms in metamorphic rocks...
Tai Chi Stone
Tai Chi StoneSCIENCE / MINERALOGYTai Chi Stone is a trade name for naturally contrasting black-and-white ornamental rock used in Chinese lapidary markets. It is a multi-mineral rock rather than a...
Tai Chi Stone
Tai Chi StoneSCIENCE / MINERALOGYTai Chi Stone is a trade name for naturally contrasting black-and-white ornamental rock used in Chinese lapidary markets. It is a multi-mineral rock rather than a...
Super Seven
Super SevenSCIENCE / MINERALOGYSuper Seven is a trade name for quartz from Brazil marketed as containing a combination of amethyst, smoky quartz, rutile, cacoxenite, goethite, lepidocrocite, and clear quartz. Analytical...
Super Seven
Super SevenSCIENCE / MINERALOGYSuper Seven is a trade name for quartz from Brazil marketed as containing a combination of amethyst, smoky quartz, rutile, cacoxenite, goethite, lepidocrocite, and clear quartz. Analytical...
Sunstone
SunstoneSCIENCE / MINERALOGYSunstone is a natural mineral, rock, fossil, or trade material recognized in the crystal and lapidary market. Its exact mineralogical identity is best described from verified composition rather...
Sunstone
SunstoneSCIENCE / MINERALOGYSunstone is a natural mineral, rock, fossil, or trade material recognized in the crystal and lapidary market. Its exact mineralogical identity is best described from verified composition rather...
Sunset Sodalite
Sunset SodaliteSCIENCE / MINERALOGYSunset Sodalite is a trade name for sodalite-bearing rock with blue sodalite contrasted by orange, peach, cream, or brown feldspar/calcite-rich zones.GEOLOGY & FORMATIONIt forms in alkaline igneous...
Sunset Sodalite
Sunset SodaliteSCIENCE / MINERALOGYSunset Sodalite is a trade name for sodalite-bearing rock with blue sodalite contrasted by orange, peach, cream, or brown feldspar/calcite-rich zones.GEOLOGY & FORMATIONIt forms in alkaline igneous...
Sulfur Quartz
Sulfur QuartzSCIENCE / MINERALOGYSulfur Quartz is a variety, growth habit, or included form of quartz, silicon dioxide (SiO₂). Quartz crystallizes in the trigonal system and has a Mohs hardness of...
Sulfur Quartz
Sulfur QuartzSCIENCE / MINERALOGYSulfur Quartz is a variety, growth habit, or included form of quartz, silicon dioxide (SiO₂). Quartz crystallizes in the trigonal system and has a Mohs hardness of...