Quality of SUWA Sapphires

Quality of SUWA Sapphires

SUWA blue sapphires are highly transparent, beautiful and flawless gem quality. The color is a brilliant blue with less gray and green tones, and when combined, they create a noble, unified beauty. The sapphires are carefully selected from stones from various sources including Cambodia, Sri Lanka, Madagascar.

For small-sized sapphires, SUWA uses Gem Quality material with Tones of 4 to 5 and Beauty Grades of S to A.

Quality Scale for small sapphires

Quality Scale for small sapphires

Relative polished quantity by quality level
(less than 1-carat size)

Sapphires / less than 1-carat size

Understanding Characteristics by Source

Fabrication of jewelry is based on an understanding of the character of sapphires from different sources.

Differences in Sapphires by Source
(This video will be uploaded soon.)

Evaluating Surface Fractures and Color Banding

SUWA uses highly transparent stones with no surface fractures. In addition, sapphires require especially careful consideration for uneven color and color banding.

Sapphires That SUWA Does Not Purchase
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Choosing the Appropriate Depth

To minimize weight loss, cutters polish thick rough into deep stones. Since deep stones cannot be made into attractive jewelry, these are rejected by SUWA.

Beware of Deep Stones
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Sapphire Jewelry

Quality of SUWA Sapphires
Colored Stones

Quality of SUWA Sapphires
Quality of SUWA Emeralds
Colored Stones

Quality of SUWA Emeralds