Product Description for Min .25ct 4.5mm Trillion Color Change Garnet-CGT4503A
Garnets are a group of minerals that have common crystal structure and similar (but not exact) chemical composition. Main garnet groups include pyrope, almandite, spessartite, grossularite, andradite, and uvarovite. On Mohs' scale of hardness, garnet ranks 6.5 to 7.5. This wide-ranging group of gems covers virtually any color and is found all around the world. Commonly, garnets are found in shades of red, purplish-red, and green. Some garnets possess color-change ability like rare alexandrite.