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

• You will receive exactly this Smoky Quartz Rough - 34mm x 22mm x 19mm / 1 3/8 x 7/8 x 3/4 Inches; 15g / 0.53 oz / 75 Carat (see photo, stand and LED light base not Included)! In additional, you will get one of the Mahogany Obsidian Cabochon similar to the one in the listing, the size and the color of the cabochon may slightly vary as well due to the fact that all minerals are different. Size: 10-30mm / 7/16-1 3/16 Inches; Weight: 15-40gr / 0.5-1.4oz.
• Smoky quartz is a color variety of crystalline quartz. It ranges from a light yellowish brown to a brown that is so dark that is appears to be black. Less desirable specimens have a grayish-brown color. When cut as a gem, stones with an orangish brown to a reddish brown color are preferred by many people.
• Formula: SiO2; Color: Clear brown colour and varying from a light brown to dark a brown; Mohs scale hardness: 7;
• Quartz is the most abundant and widely distributed mineral found at Earth's surface. It is present and plentiful in all parts of the world. It forms at all temperatures. It is abundant in igneous, metamorphic and sedimentary rocks. It is highly resistant to both mechanical and chemical weathering. This durability makes it the dominant mineral of mountaintops and the primary constituent of beach, river and desert sand. Quartz is ubiquitous, plentiful and durable.
• (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 Smoky Quartz Rough - 34mm x 22mm x 19mm / 1 3/8 x 7/8 x 3/4 Inches; 15g / 0.53 oz / 75 Carat (see photo, stand and LED light base not Included)! In additional, you will get one of the Mahogany Obsidian Cabochon similar to the one in the listing, the size and the color of the cabochon may slightly vary as well due to the fact that all minerals are different. Size: 10-30mm / 7/16-1 3/16 Inches; Weight: 15-40gr / 0.5-1.4oz.HQRP-Crystal