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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (26): Howlite Howlite Clear All
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ID: 4229855 pcs
thumb image of 74.5ct Drilled Sphere Greyish White Howlite (ID: 422985)
74.47ct Howlite
12.48mm
USD 59.58
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ID: 3211171 pcs
thumb image of 8.4ct Oval Cabochon Greyish White Howlite (ID: 321117)
8.38ct Howlite
16.34 x 12.41 x 4.84mm
USD 20.95
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ID: 4229833 pcs
thumb image of 69.6ct Drilled Sphere Greyish White Howlite (ID: 422983)
69.64ct Howlite
14.47mm
USD 55.71
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ID: 4229843 pcs
thumb image of 69.2ct Drilled Sphere Greyish White Howlite (ID: 422984)
69.17ct Howlite
14.45mm
USD 55.34
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ID: 3224341 pcs
thumb image of 9.6ct Oval Cabochon Greyish White Howlite (ID: 322434)
9.63ct Howlite
16.86 x 12.86 x 5.18mm
USD 24.07
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1
2
Howlite
By chemical composition, howlite is a calcium borosilicate hydroxide. It was first discovered at Tick Canyon in Southern California in 1868. It was named after Henry How (1828-1879), a Canadian mineralogist who first described it.

Howlite is typically white or grayish white with fine grey or black or brown veins, often in a web-like pattern. It is opaque with a sub-vitreous luster sometimes described as porcelaneous. It is usually found in borax deposits in the desert clays of California.
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Size and Weight

Gems are always measured in Millimeter (mm)

Dimensions are given as;
length x width x depth,
except for round stones which are;
diameter x depth

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Gem varieties vary in density, so carat weight is not a good indication of size

Note: 1ct = 0.2g

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