5PCs Set of 45mm Blue Chalcedony Carved Spheres Polished Natural Gemstone Crystal Mineral Collectible Decor Specimen Balls - India + Stand

All our minerals and crystals are carefully measured with digital measuring instruments that provide the high accuracy of numbers/values!

• You will get 5pcs of the Blue Chalcedony Spheres similar to the ones in the listing, the size and the color of the sphere may slightly vary as well due to the fact that all minerals are different. (see photo, the photos are taken under bright light, stand included)! Average 1 Sphere Diameter: 45mm / 1.8 Inches; Average 1 Sphere Weight: 125g / 4.4oz;
• Chalcedony is a cryptocrystalline form of silica, composed of very fine intergrowths of the minerals quartz and moganite. The name chalcedony comes from the Latin chalcedonius (alternatively spelled calchedonius).
• For most of time, chalcedony was thought to be a 'fibrous' variety of cryptocrystalline quartz, but more recently it was actually discovered to be a combination of quartz and another silicate mineral; moganite (a polymorph of quartz). Both quartz and moganite share the same silicon dioxide chemical composition, but they have varying crystal structures. Moganite is monoclinic, while traditional quartz belongs to the trigonal crystal system. Chalcedony forms with a hexagonal crystal structure.
• Chemical Formula: SiO2; Color: White, blue, red, green, yellow, orange, brown, pink, purple, gray, black, colorless, and multicolored. Hardness: 7;
• (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.)