2.9" Beautiful Multicolor Agate Puffy Heart Polished Natural Mineral Crystal Stone Specimen India + Acrylic Display StandCategory: Natural India AgateAgate is the banded form of the mineral Chalcedony, which is a microcrystalline variety of Quartz. Agate is the most varied and popular type of Chalcedony, having many varieties on its own. Although the pattern on every Agate is unique, the locality of an Agate will provide resemblances in banding style and color, thus lending many Agates with a geographic prefix. Agate has irregular, sometimes circular bands of color and often replaces fossil wood. Many fossils are agatized material where the original organic substance has been replaced by agate while retaining the original structure. Agates are identical in chemical structure to jasper, flint, chert, bloodstone, and tiger-eye, and are often found in association with opal. Chemical Formula: SiO2 Silicon dioxide; Hardness: 6.5 to 7 on the Mohs scale; Color: Multicolored in banded formation. Colors include white, blue, red, green, yellow, orange, brown, pink, purple, gray, and black. Some rarer forms of Agate are iridescent. (The above information is provided solely for informational purpose. Kindly note that all stones are offered for decorative purposes only. Please, handle your stones with great care, do not grind or crumble them, do not dip or add them into your food or drink, do not use any parts of them in any elixirs, potions, lotions etc. Always make sure you wash your hands before and after working with your crystals.) You will receive exactly this Agate Heart - Weight: 255 g / 9 oz , Measurement: 73 x 68 x 39 mm / 2.9 x 2.7 x 1.5 inches (see photo, stand included)!