Jet tumbled

Tanzanite gemstone is admired for its vivid colors, which range from blue to violet, and its relative rarity. It is often used in jewelry and is highly sought after by collectors. Tanzanite gemstone is also the birthstone for December. It was first discovered in the Mererani Hills of northern Tanzania in 1967 and since then, Tanzania has been the only source of this unique gemstone. Tanzanite gemstone is a variety of Zoisite minerals and is often heat-treated to enhance its color.

Ulexite is a mineral made up of compacted parallel fibers. When cut, this rock is often called "television stone" because of its interesting optical properties. Cut at right angles, it looks like a TV screen when placed on a text. Cabochons exhibit strong chatoyancy, or the so-called cat's eye effect. Due to its softness, the material is not suitable for gem use.

Beryl is an uncommon mineral, although several varieties of it are well-known gemstones. Emerald, aquamarine, and morganite are all beryls, each with minor chemical impurities which give them their green, light blue, and pink hues. Since beryl is somewhat soft and often occurs with inclusions, clear, unchipped specimens and/or gemstones are particularly rare and highly prized.

Hematite is a dark steel grey color with a reflective aspect, making it look like shiny dark metal. Found across the world, it is now mainly mined in Brazil, South Africa, Russia, North America, and India. Hematite is a popular tumbled stone and is also made into beads, small sculptures, and cabochons.

Amazonite tumbled is a well-known blue-green stone valued for its beautiful colors. It is produced from the material mined in Russia, China, Mongolia, USA, Libya, Madagascar, Namibia, South Africa, and many more. Primarily used as a gemstone, amazonite tumbled is also used as an ornamental stone, cut into cabochons, or used for tumbled stones.

Kunzite tumbled ranges from pink to a lavender grey color and is opaque to transparent. Nowadays, it is mostly found in Afghanistan, Brazil, and Madagascar. This collector's gem is also made into delicate jewelry, beads, cabochons, or carved pendants.