Sahasak

Sahasak is a rare and unique gemstone known for its vibrant blue color and high refractive index. It is a variety of cordierite, a silicate mineral that belongs to the cyclosilicate group. The name "Sahasak" is derived from the Thai word for "blue," reflecting the gem's distinctive hue. Sahasak is typically found in metamorphic rocks, often in association with other silicate minerals.

The gemstone is valued for its exceptional clarity and brilliance, which are enhanced by its high refractive index of 1.75. This property allows Sahasak to refract light at a high angle, creating a striking and captivating appearance. The gem is also known for its durability, making it a popular choice for jewelry.

Sahasak is relatively rare, with most of the gem-quality specimens coming from Thailand, where it has been mined for centuries. The gemstone is often cut into cabochons or faceted shapes to highlight its natural beauty. Its unique properties and aesthetic appeal have made Sahasak a sought-after gemstone in the jewelry industry.