Prasiolite
Buyer’s Guide

Colour

Colour is the single most important value factor in Prasiolite. The most desirable stones display a clean, fresh green tone — not too pale and not overly dark. High-quality Prasiolite typically shows:

• A light to medium green hue
• Even colour distribution throughout the stone
• No brown or grey undertones
• Strong brightness and transparency

Very pale stones may appear washed out, while overly dark stones can lose brilliance. The finest examples have a crisp, spring-green appearance with lively light return.

Clarity

Prasiolite belongs to the quartz family and is generally expected to have excellent clarity. High-value stones are:

• Eye-clean (no visible inclusions without magnification)
• Free from surface fractures
• Free from surface scratches
• Transparent with strong light transmission

Visible inclusions, cloudiness or internal fractures can reduce brilliance and durability. Because quartz typically forms clean crystals, noticeable inclusions significantly lower value compared to higher-grade material.

Cut

Cut plays a crucial role in how beautifully Prasiolite reflects light. A well-cut gemstone enhances sparkle, symmetry and proportion. Important cut considerations include:

• • Precise facet alignment
  • Good symmetry
  • Proper depth (not too shallow or too deep)
  • Even polish across facets

Poor cutting can make even good colour appear dull. High-quality cutting maximises brightness and gives the stone a balanced, premium appearance.

Carat Weight

As with most gemstones, larger Prasiolite stones are rarer and therefore more valuable — provided colour and clarity remain high. However, size alone does not determine value.

When comparing stones:

• A smaller stone with superior colour and clarity may be worth more than a larger, lower-quality stone.
• Larger stones should maintain consistent colour saturation.

Well-balanced medium-to-large stones with strong colour and clean clarity typically command the highest prices.