Lot of 13 fluorite cabochons in mixed formats with natural colors ranging from deep violet to mint green and lemon yellow, with banded bicolor pieces. Each piece is unique; ideal for planning several coordinated jewels from the same mineral.
Piece Details
| Mineral |
Fluorite (calcium fluoride, CaF₂) |
| Dimensions |
Mixed formats; reference piece ~15×10 mm. Variation of ±1 mm |
| Shape and back |
Oval and varied shapes, flat polished back |
| Finish |
Silky polish (slightly less specular luster than quartz) |
| Hardness |
4 Mohs — we recommend a closed bezel setting to protect the edges |
| Origin |
Material acquired from a wholesale lapidary market |
| Treatment |
Untreated. Colors are natural (color centers due to rare earth impurities) |
| Piece type |
Lot of 13 unique pieces |
This specific piece
The lot includes diverse chromatic zones: dark violet, pale mint green, saturated green, lemon yellow, and bicolor pieces where the boundary between two color zones is abrupt and precise. The size is not uniform — pieces of ~15×10 mm and smaller pieces of ~10×8 mm — which allows for planning progressively sized settings or having options before deciding on the design.
How fluorite colors are formed
Pure fluorite (CaF₂) is colorless. Colors are produced by "color centers" (F-centers): vacancies in the crystal lattice where trapped electrons absorb certain wavelengths. The term "fluorescence" comes from this mineral: under UV light, it emits a blue-white luminescence visible to the naked eye, a phenomenon first identified here in the 19th century.
What setting it works for
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Closed bezel in 925 silver — with 4 Mohs, a bezel that completely covers the edge is the best setting to protect fluorite in rings or pendants.
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Occasional wear rings — the 15×10 mm formats are suitable for design; for daily wear, we recommend reserving them for special occasions.
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Wire wrap — fine wire gauge 26-28 that does not compress the edges; avoid lateral pressure that could cleave the stone.
Fluorite in tradition
The Romans carved vessels from large specimens; Georgius Agricola named it in 1546, and the term "fluorescence" was coined in 1852 by Stokes precisely because of this mineral. In crystal tradition, it is associated with mental clarity and learning (concentration and organization).
The symbolic properties attributed to minerals belong to cultural and historical traditions. They are shared for educational purposes, not as medical advice or a substitute for professional care.
Frequently Asked Questions
Are the colors natural or dyed?
Natural: color centers produced by crystal defects and rare earth traces. No detectable treatment.
How many pieces are there and what are the dimensions?
13 pieces of mixed formats. Reference piece ~15×10 mm; others slightly smaller (~10×8 mm). See product image.
Does fluorite fluoresce under UV light?
In most cases, yes — it emits blue-white luminescence under long-wave UV (365 nm).
How do you care for it?
Clean with a soft, damp cloth. Avoid acids, excessive heat, and ultrasound. More at jewelry care.
More about fluorite: properties, meaning, and uses. See also: cabochon collection · handmade rings.
