Natural Prehnite Round Shape Calibrated Cabochons are loose gemstones available in sizes ranging from 3mm to 15mm. These gemstones are translucent with an excellent cut grade and eye-clean clarity. They are natural and not enhanced, making them a great choice for those who value transparency. The gemstones are polished and have a round shape, making them perfect for jewelry making. They are sourced from South Africa and manufactured in India. Wholesale options are available.