Topaz is one of the hardest naturally occurring minerals (Mohs hardness of 8). It's transparency and brightness make it ideal for jewellery making. It is the birthstone for November. We have two different coloured natural topaz to choose from - pale topaz or swiss blue topaz. Pale topaz has an icy colour. The Swiss Blue is a warmer, mid blue. Both colour stones measure 5mm x 5mm. We have set them in our own original setting that was hand carved in Melbourne for this collection of stones.