Fluorescent Calcite Rhomb Mineral 35-65mm Natural Crystal Specimen Morocco with COA

Genuine Fluorescent Calcite from Morocco

This listing is for a genuine Fluorescent Calcite Rhomb specimen sourced from Morocco, ranging between 35–65mm in size. Each piece has been carefully chosen for its sharp crystal form, vibrant colour, and strong fluorescence under UV light. The photographs provided show an example of the actual style and quality of the specimen you will receive, with a 1cm scale cube included for reference. Every mineral comes complete with a Certificate of Authenticity, ensuring it is a 100% genuine specimen.

Geological Formation and Origin

Calcite (CaCO₃) is one of the most abundant and widely distributed minerals on Earth, forming in a variety of geological settings including sedimentary, metamorphic, and igneous environments. Moroccan Calcite specimens are highly regarded due to their clarity, colour variations, and striking rhombohedral habit. These rhombs are typically formed through the slow precipitation of calcium carbonate-rich solutions within cavities and veins, creating well-defined crystals with sharp cleavage planes.

The geological environment of Morocco, with its ancient marine limestones and dolomitic layers, provides ideal conditions for the development of Calcite crystals. Over millions of years, mineral-rich fluids percolated through fractures and voids in the rock, allowing Calcite to crystallise into rhombs that are now highly sought after by collectors. Many Moroccan deposits are also associated with other minerals such as Barite, Quartz, and Fluorite, reflecting the complex mineralisation of the region.

Mineralogical Characteristics

Calcite belongs to the trigonal crystal system and is renowned for its perfect rhombohedral cleavage, which gives rise to its distinctive rhomb-shaped crystals. The Moroccan specimens display sharp edges and smooth faces, making them excellent examples of this form. One of the most remarkable traits of Calcite is its strong fluorescence under ultraviolet light, and these pieces exhibit bright colours when exposed to UV, adding a fascinating dimension to their natural beauty.

With a hardness of 3 on the Mohs scale, Calcite is relatively soft compared to many other minerals, yet its optical properties make it highly prized. Transparent to translucent, it often shows internal zoning and subtle variations in hue, with some pieces displaying pale honey, cream, or colourless tones. Double refraction, where an image viewed through the crystal appears doubled, is another optical effect characteristic of Calcite, and Moroccan rhombs often show this phenomenon clearly.

Size and Display

Each Fluorescent Calcite Rhomb specimen in this selection measures between 35–65mm, making them ideal hand-sized crystals that are both collectible and easy to display. Their natural crystal geometry ensures they sit attractively in a case, on a shelf, or under UV light where their fluorescence can be fully appreciated. The compact size makes them suitable for educational use, crystal enthusiasts, or collectors seeking a representative example of Moroccan mineralogy.

Collecting and Scientific Value

Calcite is a fundamental mineral in geology, often used as a reference point for hardness and cleavage. Moroccan Calcite rhombs are particularly valued due to their well-defined form, their strong UV fluorescence, and their representation of the classic trigonal crystal system. Collectors appreciate these specimens for both their natural beauty and their scientific interest. They are not only aesthetic additions to any mineral collection but also excellent teaching tools for demonstrating crystallography, cleavage, and optical phenomena.

Whether for study, display, or metaphysical purposes, this Fluorescent Calcite Rhomb represents a remarkable natural specimen with both aesthetic and educational value.

Authenticity Guarantee

All of our fossils and minerals are 100% genuine specimens. Each Fluorescent Calcite Rhomb comes with a Certificate of Authenticity, verifying its origin and natural formation. The specimen you receive will be of the same type and quality as the one shown in the photographs, carefully selected for its form and features.