50 Carat Pink Botswana Agate Cabochon Pebble Natural Banded Polished Crystal Chalcedony Mineral Stone Cab You will receive exactly this Botswana Agate Cabochon Pebble - 28mm x 20mm x 12mm / 1 1/8 x 13/16 x 1/2 Inches; 10g / 0.35 oz / 50 Carat (see photo, the photos are taken under bright light, stand not included)! Agate 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. Botswana Agate is a variety of banded Chalcedony, a mineral of the Quartz family. It is predominantly banded in shades of pink and gray, though some layers may contain a muted brown or apricot. 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. 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 Many fossils are agatized material where the original organic substance has been replaced by agate while retaining the original structure.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. (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.)