A deep red variety of spinel, often of gem quality.
红尖晶石
Example sentencesExamples
As a rule the true ruby is blood-red, sometimes called ‘pigeon blood’; the spinel ruby is scarlet; and the minor variety, the ballas ruby, is rose-red.
The MED identifies this as a precious stone, possibly ‘the spinel ruby, which is isotropic and can be used as a burning glass’ (headword: epestite).
We visit the mining fields, where sapphires, topazes and spinel rubies are found.
Buy her these 0.32 ctw AA fine grade Burma spinel rubies set in lovely 14k white gold to make these really stand out!
In ancient times spinel rubies and corundum rubies were equally well known, and the two were probably often confounded.
Definition of spinel ruby in US English:
spinel ruby
noun
A deep red variety of spinel, often of gem quality.
红尖晶石
Example sentencesExamples
We visit the mining fields, where sapphires, topazes and spinel rubies are found.
The MED identifies this as a precious stone, possibly ‘the spinel ruby, which is isotropic and can be used as a burning glass’ (headword: epestite).
Buy her these 0.32 ctw AA fine grade Burma spinel rubies set in lovely 14k white gold to make these really stand out!
As a rule the true ruby is blood-red, sometimes called ‘pigeon blood’; the spinel ruby is scarlet; and the minor variety, the ballas ruby, is rose-red.
In ancient times spinel rubies and corundum rubies were equally well known, and the two were probably often confounded.