Blue Topaz is a very soothing and calming stone and can be useful for problem solving or sorting out muddled feeling and ideas. It can inspire and uplift and promote truth, honesty, openness and forgiveness.
Diamond is the hardest mineral on Earth and this combined with its exceptional lustre and brilliant fire has made it the most highly prized of all gems.
All gem quality corundum that is not red is called sapphire, yet this name is popularly associated with the colour blue. Variation in colour, due to iron and titanium impurities, spans many shades, but the most valuable is a deep blue.
Emerald derives its beautiful green colour from the presence of chromium and vanadium. Sometimes referred to as the Garden Stone, colour is all-important to Emerald, inclusions are secondary.
Ruby – the name given to red, gem quality corundum is one of the best gemstones for jewellery settings. Rubies may be any shade of red from pinkish to purplish or brownish red, depending upon the chromium and iron content.
Other mainstream precious stones are Aquamarine, Amethyst, Topaz, Tourmaline, Peridot, Garnet, Pearl and Opal.