Garnet is a kind of gem; garnet the English name comes from the Latin “Granatum”, means “as a seed”. Garnet comes in many different colors and shapes, and they also have some physical properties.
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Physical properties of garnet
2010-09-21 08:50:45
Due to garnet crystal’s shape close to pomegranate seeds, also the color is quite similar, so it is called garnet. Here is the physical properties of garnet.
1. Crystal Habit
Crystal habit relates to the general shapes of the mineral crystals. Garnet crystals form isometric dodecahedral and trioctahedral shapes. Isometric refers to the crystals developing in all directions at the same rate, forming crystal faces that are equidistant from the center of the crystal. Dodecahedrons are 12-sided polyhedrons, and trioctahedrons are 24-sided polyhedrons resembling an octahedron (eight-sided polyhedron) with each face divided into three faces.
2. Cleavage
Cleavage refers to the crack along inside planes within the crystal. Garnet does not display cleavage, but actually fractures result in a series of smooth, while regular surface exhibits rough, uneven outline.
for talc and value of 10 for diamond. In this scale, garnet’s hardness is similar to quartz, range from 6.5 to 7.5.
3.Tenacity
Tenacity refers to the mineral’s resistance to bending or breaking. Garnets are brittle as they break apart quite easily.
4.Color
Common garnet is red, but in fact it has various colors, its color type are enough to cover the whole spectrum of colors. Some stones are quite similar to garnet on color, for instance, ruby, sapphire, synthetic corundum, topaz, emerald, jadeite, etc, those are non-homogeneous body, can be distinguished under polarized light.
One in word, garnet has several physical properties and are welcomed by more people. It is also the January birthstone, you can choose the garnet jewelry when you send gifts to friends who are born in January.
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