Calcite Iceland Spar Pink Crystal Mineral Mexico Genuine Specimen | Natural Pink Calcite Rhombohedral Crystal with COA

Description

Natural Pink Calcite (Iceland Spar) from Mexico

This striking Calcite Iceland Spar Pink Mineral Specimen originates from the renowned mineral-rich deposits of Mexico, a region celebrated for producing high-quality calcite crystals in vivid colour varieties. The photograph shows the exact specimen you will receive, and the scale cube = 1cm provides accurate size reference. Carefully chosen for its exceptional clarity, delicate pink hue, and natural rhombohedral crystal form, this specimen is a perfect addition to any mineral, fossil, or crystal collection.

Geological Origin and Mineral Composition

Calcite (CaCO₃) is a calcium carbonate mineral and one of the most abundant and significant components of the Earth’s crust. It forms in a wide range of geological environments, including sedimentary, igneous, and metamorphic settings, and is the primary constituent of limestone and marble. The Iceland Spar variety of calcite is prized for its high transparency, well-defined crystal cleavage, and remarkable optical properties, including double refraction.

The soft pink colouration in this Mexican specimen is caused by subtle trace elements and inclusions, particularly manganese or iron oxides, that impart a delicate blush tone to the otherwise colourless calcite structure. These inclusions form naturally during crystal growth under specific hydrothermal conditions, often in association with other carbonate and silicate minerals.

This specimen likely formed within hydrothermal veins or cavities in limestone-rich rock, where mineral-laden fluids deposited successive layers of calcite over time. The steady crystallisation produced the classic rhombohedral cleavage planes that define Iceland Spar, along with its glassy lustre and characteristic optical brilliance.

Crystal Structure and Physical Characteristics

Calcite crystallises in the trigonal crystal system, belonging to the carbonate mineral group. It exhibits perfect rhombohedral cleavage, meaning it breaks cleanly along three planes that intersect at oblique angles of approximately 74° and 106°. This structural property gives Iceland Spar its distinct geometric form and enhances its visual symmetry.

One of the most remarkable properties of Iceland Spar is its birefringence, or double refraction. When viewed through a transparent crystal, objects appear doubled — a result of light splitting into two rays travelling at different velocities within the crystal lattice. This optical phenomenon was first observed in Icelandic calcite and is still used in optical instruments and scientific studies today.

This Mexican pink variety combines the clarity and reflective sheen of classic Iceland Spar with the soft natural tint that adds aesthetic warmth. It displays a vitreous lustre, semi-transparency, and occasionally subtle internal rainbows under bright light. The mineral registers 3 on the Mohs hardness scale, meaning it can be easily scratched by harder minerals but takes an excellent polish, making it highly desirable for collectors and display.

Geological Context and Locality

Mexico is one of the most significant sources of fine calcite crystals, particularly in regions such as Chihuahua and Durango, where hydrothermal processes and carbonate-rich geology create ideal conditions for crystal growth. The country’s mineral deposits are known for their diversity, often yielding specimens with distinct colour variations and high optical quality.

The pink Iceland Spar from Mexico represents an intersection of geological precision and natural artistry. Over millions of years, circulating mineral-rich fluids within limestone host rocks precipitated calcite crystals, which later developed their unique colour through trace mineral inclusion and temperature variation during formation.

Authenticity and Collectible Value

All our specimens are 100% genuine minerals and come with a Certificate of Authenticity verifying their natural origin and geological provenance. This particular Pink Calcite Iceland Spar is hand-selected for its aesthetic appeal, natural colouration, and well-preserved crystal form. The photo shows the actual specimen you will receive, ensuring transparency and confidence in every purchase.

This specimen exemplifies both the scientific importance and natural beauty of calcite — combining perfect crystallography, optical intrigue, and a rare pink hue that sets it apart from traditional colourless Iceland Spar. It is an elegant geological treasure, ideal for display, study, or private mineral collections.