Elastic bracelet with 18–22 labradorite beads, 10 mm in size, featuring the characteristic blue-green labradorescence effect of this feldspar. Labradorite is one of the few minerals that produces a visible iridescence to the naked eye: as you turn the bracelet in your hand, blue, green, and sometimes golden flashes emerge from the depths of each bead, reflecting light on internal layers. The silver-gray background of the labradorite makes these flashes especially visible in contrast.
Item Details
| Mineral |
Labradorite ((Ca,Na)(Si,Al)₄O₈ — plagioclase) |
| Bead size |
10 mm diameter (±0.5 mm) |
| Number of beads |
18–22 units depending on wrist size |
| Finish |
Mirror polished — maximizes labradorescence |
| Hardness |
6–6.5 Mohs |
| Optical effect |
Labradorescence — blue-green to golden iridescence |
| Clasp |
No clasp — adjustable elastic thread |
| Origin |
Material acquired from wholesale lapidary market |
| Treatment |
No treatment |
The beads in detail
Labradorescence is not uniform among beads: some show an intense electric blue, others a softer bluish-green, and a few may show golden or orange tones. This variation depends on the viewing angle, the orientation of the cleavage plane relative to the bead's surface, and the density of the albite-anorthite lamellae that produce the light interference. The background of the stone ranges from silver-gray to dark gray, serving as a backdrop that amplifies the contrast with the flashes.
In 10 mm beads, labradorescence is clearly visible without the need for direct light: under normal ambient lighting conditions, the beads show their effect simply by moving the wrist. Some beads may have areas with no visible effect (matte gray) — this is normal and does not indicate low quality, but simply that that area of the bead has the lamellae at an unfavorable angle to the observer.
How labradorescence is formed
Labradorite is a plagioclase feldspar with a composition between albite (NaAlSi₃O₈) and anorthite (CaAl₂Si₂O₈). During the slow cooling of igneous rock, alternating lamellae of two different plagioclase compositions are formed at a nanometric scale. When light passes through these lamellae, an optical interference occurs, amplifying certain wavelength ranges and returning them to the observer as bright colors. It is the same mechanism that produces the colors of soap bubbles or butterfly wings, applied to a crystalline mineral structure. The best-known deposits are in Labrador (Canada, which gave the mineral its name), Madagascar, and Finland.
Labradorite in lapidary tradition
The Inuit of Labrador (Canada) already knew about labradorite before European contact and called it "fire stone," associating it with the Northern Lights they believed were trapped in the rock. Inuit legend says that a warrior struck the rock with his spear to release the lights, and that some remained trapped forever in the stone. European explorers brought samples to Europe in the late 18th century, and the mineral quickly became popular in Victorian jewelry under the name "spectrolite" for varieties with greater iridescence.
In crystal tradition, labradorite is associated with intuition, transformation, and magic — qualities linked to its unpredictable and changing visual effect. This is shared as cultural reference, not as medical advice.
How to recognize genuine labradorite
Genuine labradorescence is a color iridescence that changes with the viewing angle — unlike dyed minerals, whose color is fixed from any angle. The silver-gray base of labradorite is another indicator: undyed feldspar always has this neutral background. The most common imitations are iridescent glass and laboratory-grown (synthetic) labradorite, which present overly uniform and bright colors. Genuine labradorite can have areas without visible labradorescence, which rarely occurs in imitations designed to always look perfect.
Frequently Asked Questions
Is this labradorite treated?
No detectable treatment. Labradorescence is a structural optical effect — it cannot be added by dyeing or heat treatment. The gray color of the background is the natural color of the feldspar. Statement based on lapidary observation.
Why do some beads have less labradorescence than others?
The intensity of labradorescence depends on the orientation of the lamellae relative to the bead's surface. In a spherical bead, different areas have different orientations: only areas with the lamellae at the correct angle will show the flash. This is a characteristic of the mineral, not a defect in quality.
Is the bracelet one size fits all?
Yes. The elastic thread adapts to most wrist sizes (circumference 16–21 cm). The number of beads varies between 18 and 22 units; the diameter of each bead is 10 mm ±0.5 mm.
How do I care for a labradorite bracelet?
With a hardness of 6–6.5 Mohs, labradorite can be scratched by harder materials (quartz, garnet). Store separately from other hard jewelry. Clean with a soft, damp cloth; avoid detergents and ultrasonic cleaners. Consult our jewelry care guide.
Can the bracelet get wet?
The mineral can withstand contact with water. The elastic thread may deteriorate with prolonged immersion. We recommend removing the bracelet when swimming or showering.
Does labradorescence fade over time?
No. Labradorescence is an optical effect of the internal crystalline microstructure of the mineral and cannot wear out or be removed. However, deep surface scratches can affect the quality of the polish and reduce the visibility of the flash in damaged areas.
See also: mineral bracelets collection · labradorite cabochons.
