Yellow Sapphire Kowangu Rough Price – Natural Kowangu Pushparaga

Discover the characteristics and value of Yellow Sapphire Kowangu Rough, a traditional Sri Lankan trade category of yellow corundum, also known as Pushparaga.

Kowangu Pushparaga is associated with natural rutile crystal inclusions appearing in patches or lines within yellow sapphire rough, without necessarily creating an overall cloudy appearance. This distinctive internal structure makes it interesting to gemstone traders, experienced heat treaters and lapidaries.

Natural Kowangu Yellow Sapphire Rough Characteristics

• Gemstone: Yellow Sapphire (Pushparaga)
• Mineral: Corundum
• Chemical Formula: Al₂O₃
• Crystal System: Trigonal
• Mohs Hardness: 9
• Colour: Yellow to golden yellow
• Internal Features: Rutile crystal patches or lines
• Material: Natural sapphire rough
• Potential Uses: Gemstone cutting, heat-treatment evaluation and mineral collecting

What Determines Yellow Sapphire Kowangu Rough Price?

The value of Kowangu yellow sapphire rough depends on its individual characteristics, internal structure and potential after cutting or treatment.

Important valuation factors include:

1. Natural Colour: Yellow hue, tone and saturation.
2. Rutile Distribution: The size, shape and distribution of internal rutile features.
3. Transparency: Overall transparency and visible cloudiness.
4. Clarity: Inclusions, fractures and internal imperfections.
5. Crystal Weight: Individual weight and dimensions.
6. Crystal Condition: Natural shape, surface damage and fractures.
7. Faceting Potential: Estimated usable material and possible finished gemstone yield.
8. Heat-Treatment Potential: Suitability for controlled heating based on its internal characteristics.
9. Treatment Status: Whether the rough is untreated or has previously undergone treatment.
10. Origin and Documentation: Verified mining origin and supporting identification reports.

Kowangu Pushparaga and Heat Treatment

In Sri Lankan gemstone trading, Kowangu Pushparaga is associated with yellow corundum containing rutile inclusions in patches or lines. Experienced gemstone professionals may assess this material for possible heat treatment.

However, the result depends on the individual stone’s internal characteristics, chemical composition and treatment conditions. Heating does not guarantee improved colour, clarity or market value.

Any treatment should be disclosed accurately when selling the resulting gemstone.

Yellow Sapphire Kowangu Rough Price Per Carat

There is no universal fixed price per carat for Kowangu yellow sapphire rough. Stones with similar weights can have very different values depending on colour, rutile distribution, transparency, fractures and cutting potential.

Material selected for possible heat treatment should be evaluated separately from transparent, faceting-grade yellow sapphire rough. A potential treatment outcome should never be treated as a guaranteed finished gemstone value.

Buy Natural Kowangu Yellow Sapphire Rough

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

Contact us for available rough gemstone selections, actual photographs, videos, individual weights, dimensions and personalised quotations.

We welcome enquiries from international gemstone buyers, lapidaries, gemstone traders and jewellery designers interested in natural Sri Lankan sapphire rough.