Our fully integrated Manufacture is the birthplace of ground-breaking innovations, among them the uniquely shaped spinels named Spin-Stones™. Graded from red to blue and coated with SuperLumiNova, the stunning gems always shine in colour - by day, night, or under UV light-, and give birth to the Excalibur Blacklight Spin-stone™ MB edition while taking colourful luminescence to new heights.