36mm Blue White Dendrite Agate Sphere Rare Natural Colorful Crystal Polished Dendritic Scenic Ball Mineral Stone - Madagascar You will receive exactly this Dendritic Agate Sphere - 36mm / 1 7/16 Inches Diameter; 65g / 2.3 oz (see photo, stand not included)! Dendritic agate is also known as Tree Agate due to its inclusions, known as dendrites, that remind the shape of a tree ("dendron" in Greek) or leaves. It is an agate variety, either translucent or opaque, mainly in white, green or brown shade "Dendrites", a Greek word for 'tree-like', are inclusions that appear organic due to their plant-like structure, but they are actually inorganic traces of iron or manganese. The iron and manganese ions gain access to the forming stone as weathering solutions from neighboring rock. The impurities crystallize inside the agate in branching formations seeping through fine surface fractures. In some cases, dendritic inclusions may form in spotted clusters rather than branching structures. Chemical Formula: SiO2 Silicon dioxide; Hardness: 6.5 to 7 on the Mohs scale; Color: Colorless to whitish-gray; (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.)