Calcite, Quartz (Var: Amethyst)
Cabinet, 10.1 x 8.8 x 4.9 cm
Irai, Alto Uruguai region, Rio Grande do Sul, South Region, Brazil
Here you have amethyst of the form that sometimes forms the so-called "flowers" from Irai - but at the other end, two complete, rounded calcite crystals alternating a light golden color with snowy white. The white could be a mineral inclusion, but appears to possibly be from intense surface crackling during the growth of the crystal that was then enclosed by later growth. Ex. Richard Hauck Collection.