Red Glass Rock, also known as Red Jasper and Fire Stone, is one of the most exquisitely beautiful stones for use in aquariums, terrariums, and bonsai tree arrangements. This semi-precious gemstone is also very popular for use in jewellery. it will not significantly alter water parameters In the aquarium.
 
Doesn't Alter water parameters.
To be washed 6 to 7 times before use.