28.80 carat top grade Swiss blue topaz x 450 Rs per carat..

28.80 carat top grade Swiss blue topaz x 450 Rs per carat..

A top grade Swiss blue topaz weighing 28.80 carats would be considered a valuable and high-quality gemstone. Swiss blue topaz is a popular variety of topaz that is known for its intense blue color, which is caused by the presence of iron and chromium in the crystal structure.

The value of a Swiss blue topaz depends on several factors, including its color, clarity, cut, and carat weight. In general, larger stones are more valuable than smaller ones, and stones with a vivid, saturated blue color are more desirable than those with a lighter or more washed-out color.

Assuming that the stone is of top quality, a 28.80 carat Swiss blue topaz could be worth several thousand dollars or more, depending on the current market conditions and the specific characteristics of the stone. However, the value could be significantly lower if the stone has any flaws or imperfections, such as visible inclusions, uneven color distribution, or poor cutting.