Light your drink up with these red hematoid-infused quartz coasters, with flecks of rainbows within! Fire Quartz, also known as Hematoid Quartz, is a grounding combination of Clear Quartz and Hematite. It can bring a sense of balance to the mind, body, and spirit. Fire Quartz clarifies a unique understanding of emotions. It helps to increase self-worth and self-esteem by allowing you to focus on your inner self and recognize your positive qualities. They measure about 3.5" each.