Amethyst Crystal | Purple Variety of Quartz
A magnificent amethyst crystal with rich purple colour. As well as fascinating crystallization some hues of yellow can be seen when this point is held up towards the light. This may well be traces of citrine. Amethyst is the purple variety of quartz and citrine is yellow or orange but it's also quite rare. For this reason most of the world's commercial grade material is produced by heating amethyst.
The application of heat disrupts the stone's natural chemical makeup which causes crystals to change colour. Heat treatments to enhance or change the colour of stones has been practiced for thousands of years. Theophrastus [c.370-285 BC] Ancient Greek philosopher wrote in his treatise Theophrastus on Stones "amethyst loses its colour in the fire like the sapphire and emerald". Use of the name emerald however is not believed to refer to the green variety of the mineral beryl but is instead a reference to any number of green coloured stones. Emerald is not believed to have been known at this time.
The purple colour of amethyst has long been associated with royalty and this unique mineral has been in great demand throughout history. Some of world's finest crystals have been set into royal jewellery collections from Ancient Egypt to the British Crown Jewels.
Amethyst which is February's birthstone should be positioned away from direct sunlight and heat to prevent its colour from fading.
Weight (grams) : 178.8
Size (cms) : 6.9 x 4.5 x 3.7