Sokolovskoe Iron Mine, Rudny, Kostanay Region, Kazakhstan

Dimensions (H x W x D)

18.5 x 10.7 x 8.7 cm


1.37 kg

Description & Provenance

Calcite is one of the most prolific minerals on earth, but thanks to its remarkable diversity, collectors often have several unique examples in their collections. In fact, the many shapes, colors, and associations of calcite make for a seemingly infinite number of permutations, allowing collectors to have entire suites of calcites where one is far different from the next. From the “petaled” pink calcites of China to the doubly terminated scalenohedral “diamonds” of Tennessee, USA, calcites are a testament to the creativity of Mother Nature.

The Rudny area of Kazakhstan was once a consistent and abundant producer of ore and specimens alike. Mining produced many handsome pieces (particularly golden yellow calcites) that could be found readily and relatively steadily in the mineral market. However, the supply has dwindled since its last major find (circa the 1990s). Since then, these distinctive calcites have become a sought-after specialty that many equate with the region. Crystals tend towards a light-yellow coloring and the most desirable examples are attractive, twinned crystals with nice translucence.

This example features half a dozen golden, twinned crystals, characteristic to the locale. With their daffodil-yellow tone and lucidity, they take on a lovely glow with just a hint of light. They also have a lustrous sheen to their shapely, well-terminated forms. All of this is further heightened by an earthy, contrasting matrix (host rock). The calcite crystals are wonderfully composed on their matrix in a curving, S- formation. The largest crystals have formed towards the top of the specimen and are accented by the smaller crystals that snake down the matrix. All crystals are well-formed and well-dispersed across the matrix for a balanced and attractive presentation. An aesthetic example from a now-closed locality, this specimen would make a great addition to any collection.

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