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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (25): Howlite Howlite Clear All
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ID: 3209662 pcs
thumb image of 11.7ct Oval Cabochon Greyish White Howlite (ID: 320966)
11.68ct Howlite
14.32 x 10.43 x 4.62mm
USD 29.20
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ID: 3211111 pcs
thumb image of 7.5ct Oval Cabochon Greyish White Howlite (ID: 321111)
7.51ct Howlite
16.20 x 12.38 x 4.52mm
USD 18.77
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ID: 2735471 pcs
thumb image of 8.6ct Oval Cabochon Greyish White Howlite (ID: 273547)
8.56ct Howlite
16.22 x 12.44 x 4.89mm
USD 21.40
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ID: 3224381 pcs
thumb image of 10.1ct Oval Cabochon Greyish White Howlite (ID: 322438)
10.05ct Howlite
18.25 x 13.33 x 5.08mm
USD 25.12
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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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