BLUE TOPAZ FOR VENUS
It is also a semi-stone. (up-Ratna) of Shukra. If it is good
quality, it can be used in place of diamond. It resembles
aquamarine, but due to heaviness in weight the difference is
detected, Some Jewellers sell it in place of aquamarines, as it
is available in one third price.
The wearer is protected from the bad effects of Shukra Grah &
increases sexual power. It is cheaper than aquamarine. Its price
rises in accordance with increase in bluish colour.