- - A colorless silicon-based crystal, perhaps best known for its use in watch mechanisms
- - use imperial measurement for liquid and middle-sized crystal, perhaps
- - Amethyst is a purple form of it
- - Rock mineral
- - Watch crystal, maybe
- - Watch-crystal mineral
- - The crystal in some crystal balls
- - Stone such as amethyst or cairngorm
- - Citrine or amethyst
- - Amethyst or citrine
- - Crystal in some watches
- - What a crystal ball gazer sees
- - Onyx or amethyst
- - Vibrating crystal
- - Amethyst or sandstone
- - Kind of crystal.
- - Amethyst, rock crystal, etc.
- - Rock crystal.
- - Hard rock
- - Amethyst, e.g
- - Noisily peck parts of rock crystal
- - Crystal used in watches
- - Mineral with coloured varieties used as gemstones
- - Hard glossy mineral
- - Mineral: at least four pints picked up?
- - mineral - definite quantities of it, we hear
- - Silicon dioxide
- - Second-most abundant mineral in the crust
- - Sand ingredient
- - Silica mineral
- - Mineral tinged with impurities giving a variety of shades
- - Rose ....: reddish mineral
- - Mineral in a measure of liquid, unknown
- - Mineral and two pints, followed by unknown quantity
- - It's 7 on the Mohs scale of hardness
- - Silicon mineral
- - Tiger's-eye, essentially
- - Jasper or onyx
- - Seven on the Mohs' scale
- - Basis for some watches
- - Sand's main ingredient
- - Jasper or agate
- - Makeup of some gems and wristwatches
- - Silica
- - Hard mineral
- - Form of silica
- - Crystalline mineral
- - 7 on the Mohs scale
- - Mineral
- - Glassy mineral
- - Transparent mineral
- - Kind of watch
- - Silicate mineral
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