Crystals Rocks Minerals to Tempt and Tantalise You

Schiller

schiller in three labradorite stones

Schiller is caused by the reflection of light

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Sedimentary Rocks

Last Chance Range Death Valley

Sedimentary rocks can take thousands to millions of years to form

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Silicate Minerals

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Silicate minerals important class of rock-forming minerals

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Silicon

high purity polycrystalline silicon

Oxygen and silicon make up about 75% of Earth's crust

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Silicon Dioxide

crystalline silicon dioxide also known as quartz

Silicon dioxide occurs in nature as crystalline quartz

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St Edward's Sapphire

The Imperial State Crown

St Edward's sapphire in the Maltese Cross in the Imperial State Crown

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Sterling Silver

two sterling silver bangles

Sterling silver often described incorrectly as solid silver

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Streak (Minerals)

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A streak test can be used to help identify certain minerals

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Stromatolites

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Stromatolite from the Greek for 'layered rock'

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Stuart Sapphire

stuart sapphire in the Imperial State Crown

The Stuart Sapphire mounted in the back of the Imperial State Crown

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Sweet Home Mine

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The Sweet Home Mine in Colorado famous for rhodochrosite

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