Natural calcite. Calcium carbonate, iron for most calcites (secondary rhombohedral). Calcite is found almost everywhere and in almost all colors, with regard to the quality of stones it is on the American and European continents that we find the finest qualities. Calcite is from the chalcedony subfamily. According to lithotherapy books, calcites are widely available. Development (white), discernment and stability (blue), certainty and confidence (honey), self-confidence and self-esteem (yellow and orange), friendliness and empathy (pink), surpassing oneself and growth (red), imagination and let go (green). The 7 chakras have calcite and all the astrological signs will find their calcite.