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Calcite

Calcite is among the most diverse minerals on Earth, forming in over 800 crystal habits — more than any other mineral species. Our calcite mineral specimens showcase this incredible variety, from razor-sharp scalenohedrons to perfectly transparent Iceland spar rhombohedrons that demonstrate double refraction.

Notable calcite specimens in our collection come from classic localities including Elmwood Mine and Sweetwater Mine in Tennessee (known for honey-yellow twins), Dalnegorsk in Russia (gem-clear crystals), and various Mexican mines producing large, water-clear optical-quality crystals. Chinese calcite from Guangxi and Hunan provinces offers dramatic forms including butterfly twins and tall prismatic crystals in orange, yellow, and colorless varieties.

Calcite appeals to collectors at every level because of its accessibility and visual impact. Sharp crystal terminations, internal rainbows, phantoms, and unusual habits like nail-head calcite or dog-tooth spar make this mineral endlessly fascinating. Many specimens fluoresce brilliant red, pink, or blue under UV light, adding another dimension to display.

For new collectors, calcite is an excellent starting point — affordable specimens with strong crystal form are widely available. For advanced collectors, rare habits like stalactitic calcite, twinned butterflies, or large transparent rhombs from classic localities command serious attention. Each calcite in our inventory is selected for sharp crystal definition, minimal damage, and strong visual presence on the shelf.

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