Sapphire crystal: Unterschied zwischen den Versionen
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{{Other languages|[[Saphirglas|de]]|[[Saffierglas/nl|nl]]|[[Сапфировое стекло|ru]]}} | {{Other languages|[[Saphirglas|de]]|[[Saffierglas/nl|nl]]|[[Сапфировое стекло|ru]]}} | ||
| − | Glass made of artificially produced sapphire. It is very hard (9 on the Mohs scale) and scratch-resistant. It ranks just below the diamond in these two respects. | + | Glass made of artificially produced [[Saphir|sapphire]]. It is very hard (9 on the Mohs scale) and scratch-resistant. It ranks just below the diamond in these two respects. |