Tourmalinated Quartz and Smoky Quartz Faceted Rondelles measure approximately 6mm to 8mm in diameter size, have a glass like luster, good polish, the shapes are symmetrical with various degrees of black tourmaline needles throughout, and the translucent colorless crystal quartz to Smoky quartz bodies are a great value with strong aspects of thick to fine black tourmaline needles throughout the strand.