| Mineral of which ruby and sapphire are varieties (8) |
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| Mineral composed of aluminium oxide, the red variety of which is ruby (8) |
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| A crystallised mineral of which ruby and sapphire are varieties (8) |
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| Hard form of aluminium oxide whose red variety is called ruby (8) |
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| Hard mineral form of alumina of which sapphire and ruby are varieties (8) |
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| Mineral almost superfluous in plant stem |
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| Mineral in abrasives |
LA Times Daily |
02 Sep 2022 |
| Abrasive mineral |
The Times Concise |
09 Dec 2021 |
| Maybe a ruby from curmudgeon sorry after Georgia's left |
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| It is very hard auditing Telco run dumbly |
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| Brother, not silent presumably, sounding abrasive |
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| Jointly managed depleted uranium and fermium nucleus with this mineral |
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| Very hard mineral used as an abrasive |
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| An abrasive scrap almost ending company career |
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| Ruby or sapphire |
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| Sapphires and rubies. |
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