Tsavorite Garnet, Grossularite Gemstone Information. Information * Loose gemstones * Jewelry links Tsavorite Garnet (grossular garnet) comes from the garnet species grossularite, taken from grossularia, the genus name for gooseberry. It was orginally found in Tsavo National Park in Kenya and appeared on the market in 1970.   ENHANCEMENT CODE N Click to view AGTA code. PROPERTIES Refractive Index 1.74 Hardness = 7-7.5 (Moh's Scale) Specific Gravity =3.61 Species - Grossularite Optic Character - Single Refraction. Phenomena - None WARNINGS FOR CARE Ultrasonic: Usually safe Steamer: Never Heat: Fair-poor; temperature changes may cause fracturing Chemicals that harm: Hydrofluoric acid   Crystal Structure Crystal system: Isometric, rhombic, dodecahedrons, icositetrahedron. MAJOR SOURCES Sri Lanka, Kenya, Tanzania, Brazil, India Birthstones  January  Garnet February Amethyst March Aquamarine April Diamond May Emerald June Pearl/Alexandrite July Ruby August Peridot September Sapphire October Opal/Tourmaline November Topaz or Citrine December Blue Topaz or Zircon Common Cut Examples. Marquise cut.   Emerald cut. Oval shape. Trillion cut. Round cut. Square cuts. Princess cut. Step cut. - Straight baguette.   Pear shape.

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