| Oxide of aluminium |
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| Constituent of many clays |
The Times Concise |
15 Sep 2022 |
| Female graduate touring island compound |
The Telegraph Cryptic |
24 Aug 2022 |
| Old girl packing beginning to idly stuff in rubies, sapphires etc. |
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| Material in sapphires and corundum |
The Times Concise |
14 Jul 2022 |
| Bauxite from a moon? I'm up for drilling! |
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| Abrasive former student one's interrupted |
The Times Cryptic |
24 Feb 2022 |
| Former student ingesting one white powder |
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| Mineral in many clays |
The Times Concise |
28 Jul 2020 |
| Compound in clays |
The Times Concise |
07 Sep 2019 |
| A chimney at home has a particular chemical |
The Times Cryptic |
05 Jun 2017 |
| Oxide in rubies and sapphires |
New York Times |
07 Jun 2016 |
| Oxide in rubies and sapphires |
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| Metal oxide found in many clays |
The Times Concise |
10 Sep 2015 |
| Processed bauxite |
New York Times |
06 May 2015 |
| Processed bauxite |
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| Bauxite component |
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| Oxide found in rubies and sapphires |
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| Earthy substance |
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| Bauxite component |
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| Ruby, essentially |
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| Corundum |
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| Corundum. |
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| Abrasive material. |
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| White powder used as an abrasive. |
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