white sapphire

American  

noun

Mineralogy.

1. a colorless variety of corundum, used as a gemstone.

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white sapphire British  

noun

1. a white pure variety of corundum, used as a gemstone

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Example Sentences

Under the influence of the high temperature the silica of the crucible gradually decomposes the lead aluminate, forming lead silicate, which remains in the liquid state, and alumina, which crystallizes as white sapphire.

From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5 "Gassendi, Pierre" to "Geocentric" by Various

The specific gravity method is of especial value in distinguishing between the various colorless stones, as, for example, quartz crystal, true white topaz, white sapphire, white or colorless beryl, etc.

From A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public by Wade, Frank Bertram

In the light colored stones and in white sapphire, the difficulty is greater, as there are no color variations in the latter case.

From A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public by Wade, Frank Bertram

A tablet of gold with one white sapphire and one blue one.

From Ten Girls from History by Sweetser, Kate Dickinson

Ebelmen produced the white sapphire and rose-coloured spinel by fusing the constituents at a high temperature in boracic acid.

From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5 "Gassendi, Pierre" to "Geocentric" by Various