Unheated Natural Alexandrite Rough Price – Natural Colour Change Chrysoberyl

Discover the extraordinary beauty of Natural Alexandrite Rough, one of the most fascinating and sought-after gemstones in the chrysoberyl family. Famous for its remarkable colour-changing phenomenon, alexandrite attracts gemstone collectors, professional lapidaries, jewellery designers and international gemstone buyers.

Natural alexandrite displays different colours under different lighting conditions, commonly appearing green or bluish green in daylight and reddish or purplish red under incandescent light.

Natural Alexandrite Rough Characteristics

• Gemstone: Alexandrite
• Mineral Family: Chrysoberyl
• Chemical Formula: BeAl₂O₄
• Crystal System: Orthorhombic
• Mohs Hardness: 8.5
• Optical Phenomenon: Natural colour change
• Daylight Appearance: Green, yellowish green or bluish green
• Incandescent Appearance: Red, purplish red or reddish brown
• Potential Uses: Precision faceting, jewellery and mineral collecting

What Determines Natural Alexandrite Rough Price?

The price of natural alexandrite rough depends on its individual characteristics and potential finished gemstone quality.

Important valuation factors include:

1. Colour Change: Strength, distinctness and completeness of the colour change between different lighting conditions.
2. Daylight Colour: Attractive green or bluish-green colour can increase desirability.
3. Incandescent Colour: Red and purplish-red tones are particularly sought after.
4. Transparency and Clarity: Internal inclusions, fractures and transparency affect cutting potential.
5. Crystal Weight: Larger suitable rough crystals can attract greater buyer interest.
6. Crystal Condition: Natural shape, damage and surface characteristics influence evaluation.
7. Faceting Potential: Cutting orientation, usable material and estimated finished yield.
8. Geographical Origin: Documented origin may influence market interest.

Why Is Alexandrite Rough So Special?

Alexandrite is a colour-change variety of chrysoberyl. Its distinctive optical behaviour is associated with chromium within its crystal structure.

The strength of the colour change is one of the most important factors in determining its desirability. A rough crystal with attractive colour change in both daylight and incandescent lighting may be particularly interesting to gemstone cutters and collectors.

Sri Lankan alexandrite is known for its characteristic colour range, often showing yellowish-green to brownish-red tones. However, individual stones can vary considerably.

Unheated Natural Alexandrite Rough for Gemstone Cutting

Selected transparent alexandrite rough may be suitable for precision faceting. Careful cutting orientation is essential to showcase the gemstone’s colour-changing appearance.

Before purchasing, evaluate:

• Colour appearance under daylight and incandescent lighting.
• Strength and coverage of the colour change.
• Crystal transparency and internal inclusions.
• Natural fractures and surface damage.
• Weight and dimensions.
• Estimated finished gemstone yield.

Alexandrite is generally marketed without heat treatment, but natural identification and treatment disclosures should be supported by appropriate gemological assessment.

Enquire About Natural Alexandrite Rough Prices

Looking for natural alexandrite rough for gemstone cutting, collecting or wholesale purchasing?

Contact us for available rough gemstones, actual photographs, daylight and incandescent-light videos, individual weights, dimensions and personalised quotations.

Individual gemstone enquiries and wholesale parcel enquiries are welcome.

Discover the fascinating colour-changing beauty of natural alexandrite.