Oval labradorite cabochon, approximately 40 mm, with high-intensity blue-green labradorescence. Mirror-polished flat back, ready for custom bezel setting.
Item details
| Mineral |
Labradorite (plagioclase feldspar) |
| Dimensions |
~40 mm major axis (unique piece; see photos) |
| Shape and back |
Oval, flat polished back |
| Finish |
Mirror polish |
| Hardness |
6-6.5 Mohs — we recommend a full bezel setting to protect the edge |
| Origin |
Material purchased from a wholesale lapidary market |
| Treatment |
No treatment |
| Type of piece |
Unique piece |
About this specific piece
Labradorescence is an optical interference phenomenon visible only from certain angles: light reflects off alternating lamellae of albite and anorthite, producing spectral colors ranging from electric blue to green and gold.
The ~40 mm size along the major axis makes this cabochon the undisputed centerpiece of a large pendant or a statement ring. The regular flat back facilitates bezel adjustment without the need for additional support.
How labradorescence forms
Labradorite is a plagioclase feldspar with an intermediate composition between albite (NaAlSi₃O₈) and anorthite (CaAl₂Si₂O₈). During slow crystallization, alternating lamellae of slightly different composition develop, separated by layers 50-600 nanometers thick.
What settings it works for
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Bezel setting (925 silver or other precious metals) — a custom-built bezel around the oval perimeter is the best setting to showcase the optical phenomenon by leaving the back free.
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Pendants with silver settings — the ~40 mm size makes it the star of a large pendant or front-facing necklace.
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Wire wrap — an alternative for those who work with wire wrapping; the oval outline makes it easy to embrace with 18-20 gauge wire.
Labradorite in lapidary tradition
First described by Moravian geologists on Labrador Island (Canada) in 1770, labradorite became a key piece in 19th-century European mineralogical collections.
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.
How to recognize genuine labradorite
Legitimate labradorite shows labradorescence only from certain angles — not in all positions. Glass imitations exhibit uniform omnidirectional brilliance.
Frequently asked questions
Where does this labradorite come from?
The material comes from international wholesale lapidary stock. The main deposits of gem-quality labradorite are found in Madagascar, Finland, Canada, and India. Without direct traceability of the lot, we indicate the origin as a wholesale lapidary market.
What setting is most suitable for it?
For any setting that keeps the flat back free — labradorescence requires light to hit at a certain angle. A custom-built full bezel in 925 silver is the most versatile option. It also accommodates wire wrap. We recommend a full bezel setting due to the 6-6.5 Mohs hardness.
Has it had any treatment?
No treatment. Labradorescence is a result of the natural microstructure of the feldspar, not of dyes or coatings. Statement based on lapidary observation; the piece does not include formal gemological certification.
Why does labradorescence vary between pieces?
The intensity and dominant color depend on the thickness and regularity of the internal lamellae, which naturally vary from piece to piece. This cabochon exhibits the pattern of its own crystallization zone.
What are the exact dimensions?
Approximately 40 mm along the major axis. Exact dimensions are shown in the product photographs. As it is an individual stock piece, there may be a variation of ±2-3 mm from the nominal dimension.
How is it cared for?
Clean with a soft cloth and lukewarm water. Avoid ultrasonic cleaners and chemical agents (acids, ammonia) that attack the feldspar structure. Store separately from harder gems. See complete jewelry care guide.
More about labradorite: properties, meaning, and uses. See also: cabochon collection · handmade pendants.
