All UnicMatrix® glass models have solely natural ingredients. They are handmade with highest quality criteria. The partially shining colors of the glass objects result solely from natural dyestuffs and minerals (for instance, red is produced by adding selenium, green by iron). The whole production process is performed completely by hand; color and pattern may vary. For the preservation of optimal effectiveness: hold your UnicMatrix® jewel under running water for at  least a minute once a week and wash out the energy that it has collected. Also rinse your UnicMatrix® before using it for the first time!