Sugilite is a very rare mineral which comes predominantly from the Kalahari Manganese Field, Northern Cape, South Africa. The Kalahari Manganese Field is the largest sedimentary manganese deposit in the world and many rare and beautiful minerals come from the mines in this area.
There is very little sugilite left available to mine and the finest material which is known as gel sugilite is even rarer and when pieces do come become available, they command eye-watering prices. A kilo of 'decent grade' rough sugilite currently costs in the region of £1200 ($1500) and this is a wholesale price for those who buy directly from one of the very few suppliers of sugilite in South Africa.
This rough slab of sugilite has distinctive purple colour which sits on a matrix of bustamite and manganese. The back of the rock has an extensive covering of minute, snow-white crystals which sparkle incessantly as they catch the light but sadly they do appear to be a little flat in our photo.
Weight (grams): 400
Size (cms) : 11.3 x 8.9 x 3.3