Round labradorite cabochon, 35×8 mm, with blue-green labradorescence. The 8 mm profile gives volume to the dome, creating a three-dimensional piece that actively interacts with light from multiple angles. Mirror-polished flat back.
Piece Details
| Mineral |
Labradorite (plagioclase feldspar, anorthite-albite series) |
| Dimensions |
35 mm diameter × 8 mm height. Variation of ±0.5 mm |
| Shape and Back |
Round, medium dome (standard profile), polished flat back |
| Finish |
Mirror polish |
| Hardness |
6–6.5 Mohs — suitable for bezel-set rings and pendants |
| Origin |
Material purchased from a wholesale lapidary market |
| Treatment |
Untreated. Labradorescence is structural |
| Piece Type |
Unique piece |
This specific piece
The 8 mm dome produces a "doming" effect that captures light from a wider arc: the golden flash is visible across a greater range of angles, and the gradient has more play.
How labradorescence forms
During the cooling of labradorite, nanometric layers of albite and anorthite intergrow by exsolution. The spacing between the lamellae (100-500 nm) determines which wavelengths are reinforced by constructive interference: thin lamellae produce blue-violet; thick lamellae, yellow-red. The quality of the flash depends on the regularity of these lamellae in the specific piece.
What mounting it works for
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Statement ring with 925 silver bezel — 35×8 mm is the ideal scale for a large statement ring; the dome visually protrudes from the bezel in a striking way.
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Large format central pendant — the 8 mm volume creates a three-dimensional shadow that thin profiles lack; soldered bail or box system with integrated bail.
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Wire wrap — the 35 mm flat back offers enough surface for a robust wire structure.
Labradorite in tradition
Formally cataloged in 1770 by von Aepinus in Labrador (Canada); the Inuit people called it "firestone" and associated it with the aurora borealis. Very popular in Victorian and Arts & Crafts jewelry for its changing color effect. In crystal traditions, it is associated with mental clarity and intuition.
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
Can labradorescence disappear over time?
No. It is an intrinsic property of the crystalline microstructure — permanent, not a surface layer.
Is it suitable for a wedding or engagement ring?
With a well-constructed bezel, yes, although for very intensive daily wear we recommend reserving it for special occasions due to its hardness of 6-6.5 Mohs.
Is the flash color always blue?
The labradorescence of this piece is golden with streaks, as seen in the product images.
How to care for it?
Soft, slightly damp cloth. No ultrasonics or steam. More on jewelry care.
More about labradorite: properties, meaning, and uses. See also: cabochon collection · handmade rings.
