Oval rainbow moonstone cabochons from India. Blue-violet labradorescence on a translucent base. Available in 5 individual variants. Selected at a wholesale lapidary market.
Item Details
| Mineral |
Rainbow Moonstone (white labradorite, feldspar family) |
| Dimensions |
Varies by variant; oval shape (see photographs) |
| Shape and Back |
Oval, flat polished back |
| Finish |
Mirror polish |
| Hardness |
6–6.5 Mohs — we recommend a closed bezel setting to protect the edge |
| Origin |
India |
| Treatment |
Untreated |
| Item Type |
Unique piece per variant |
This Specific Piece
The oval shape is the most versatile of cabochon shapes: it accommodates both custom-made bezels and some standard pre-made oval bezels, facilitates wire wrapping due to its continuous curve, and aligns well in all design positions. In these pieces, the optical phenomenon is blue-violet labradorescence, visible when tilting the stone between 20° and 60° relative to direct light.
How Labradorescence Occurs
Rainbow moonstone is commercially a variety of labradorite (plagioclase feldspar) from India. The multicolored labradorescence comes from the optical interference generated by alternating lamellae of anorthite and albite, 50–600 nm thick, that form during the slow crystallization of the feldspar. When light strikes these microstructures, each wavelength (color) constructively reflects from a different angle: blue from one angle, violet from another, green or gold from a third. The "rainbow" effect is only visible if the observer moves the stone or changes the viewing angle relative to the light source. Stones with more extensive and highly saturated labradorescence are considered gemologically superior.
Suitable for What Mountings
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925 Silver Bezel Ring — the oval shape is standard for rings; with a hardness of 6–6.5.
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Silver Mounted Pendant — the oval shape provides a classic and balanced look.
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Wire Wrap — an alternative for those who work with wire wrapping; the oval outline.
Moonstone in Lapidary Tradition
Feldspar with an internal light effect has been valued in jewelry since classical Rome, where it was believed to capture moonlight. In India, the origin of this material, moonstone has deep ceremonial significance and is one of the gems associated with the Hindu lunar calendar. The rainbow variety from India began to be widely distributed in Western lapidary markets in the late 20th century, when jewelers of the Art Jewelry and New Age movements discovered its distinctive multicolored optical effect compared to classic European moonstone.
In crystal tradition, moonstone is associated with intuition, sensitivity, and natural cyclical rhythms.
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 Rainbow Moonstone
Real labradorescence is only visible from certain angles: when the stone is rotated 60°–90°, the flash disappears and reappears in another color. Glass imitations show uniform omnidirectional brilliance. Under magnification, genuine moonstone shows micro-cleavage planes of feldspar that are not replicable in glass. A piece uniformly colored from all angles is likely colored glass. The specific gravity of labradorite (~2.70 g/cm³) is clearly higher than that of plastic (~1.2 g/cm³).
Frequently Asked Questions
What is the difference between oval and teardrop shapes?
The oval shape is symmetrical and adapts to both vertical and horizontal designs — the long axis can be oriented in any direction according to the design.
Which variant do I receive? Can I choose?
Yes. Each variant is an individually numbered piece. When you add to the cart, you select the variant, and that specific piece is what you receive.
Is it treated?
Untreated. Labradorescence is a result of the mineral's natural internal microstructure. No detectable treatment. Statement based on lapidary observation; the piece does not include formal gemological certification.
