Quality and grade level assessment of labradorite ore

# Assessment of the quality and grade level of labradorite ore (Comprehensive Labradorite Grading Guide)

# # Mineralogical background data

Labradorite is classified as a plagioclase feldspar. There is a triclinic crystal system. The hallmark of value and beauty is the optical phenomenon "Labradorescence," which is caused by the reflection of light as light moves through alternating thin crystal structures, resulting in spectacular glimpses of rainbow light such as blue, green, yellow, gold, orange, red or purple.

# # Main factors in quality assessment

Valuation and quality will be determined from 4 main aspects:

* * * Light intensity and color: * * Depends on the brightness and number of colors in the ore.

* * * Mineral body color: * * Mineral floor color is often gray to black to help make lubradores stand out.

* * * Cleanliness: * * There's not much stigma or cracks.

* * * Uncut quality: * * Proper uncut will allow the light to be reflected prominently.

# # Quality grade grading

You should know that there are four levels of grade division.

# # # Class AAA

The highest quality. Suitable for high jewelry.

# # # Level AA

High quality. Popular for fine jewelry.

# # # Level A

Standard quality. Suitable for fashion accessories.

# # # Level B

Lowest quality. Often used in low-cost workpieces.

# # Remarks for collectors

The quality assessment focused on mineral face polish and light play. If labradorite could show a variety of colors in one pill, it would give it a significantly higher value.

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Let's Collect Minerals by Bunchong Tientong

13 Mar 2026

# Labradorite # Gemstone # Mineralogy # GemCollector # NaturalBeauty