Melanie Penner
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Perfect Star Rutile in Quartz.

Perfect Star Rutile in Quartz. Rutile is a mineral that is made up of mostly titanium dioxide, or As a mineral rutile is very high on the refractive index and disperses more light than almost any other mineral.

100 shoes for Spring/Summer $99.90 / 100 chaussures printemps-été 99,90 $

Here are the best shoes at Zara right now, from boots to sandals, to the loafers you'll want to wear every single day this fall.

Realgar, ruby red crystal in translucent Calcite scalenohedrons

Gorgeous gemmy ruby red Realgar clapsed by translucent Calcite scalenohedrons, from Jiepaiyu Mine, China. Ruby is one of the four precious stones. The other three being Diamond, Sapphire, and Emerald.

Gastropod shell, formed by mineral replacement

Sea Shells Are Prettier Than Diamonds's photo. Some old fossils still have a bit of glam left! Edgardo Maria Paolo GaiardelliSea Shell Collecting FOSSIL Gastropod shell, formed by mineral replacement

EXCEPTIONAL CRINOID MORTALITY SLAB Jimbacrinus bostocki Permian Cundlego Formation, Gascoyne Junction, Australia

EXCEPTIONAL CRINOID MORTALITY SLAB Jimbacrinus bostocki Permian Cundlego Formation, Gascoyne Junction, Australia