The quality and value of any stone is evaluated on certain parameters.

Origin - Purple Sapphire is rarer than Blue Sapphires and its mines are located in Sri Lanka, Madagascar, Myanmar and India. Stones from Ceylon (Sri Lanka) are considered the best as the crystals from these mines have a good natural colour and great transparency.

Colour - Purple Sapphires range in colour shades from lavender to dark reddish purple to violet purple. These stones tend to appear more blue than pink or red. Purple Sapphires with a mild pinkish tone are the most sought after. Also stones with even shade distribution are very valuable.

Clarity - Natural inclusions such as fingerprints, features, silk and colour shading are quite common in Purple Sapphire. Purple Sapphires without any eye visible inclusions are rare and valuable.

Cut - Purple Sapphires are mostly cut in round and oval shapes as least wastage is involved in the cutting process. Since Purple Sapphires are not as rare as Pink Sapphires, highly faceted and fancy cuts such as emerald cut, princess cut, cushion cut, etc are also available but are more expensive than the regular cuts.