Alexandrite

The popularity of green green Aventurine tumbled comes from its beauty – it's a translucent stone that comes in a beautiful shade of pale green. The most important deposits of green green Aventurine tumbled are located in India and Zimbabwe. It is commonly carved into figurines, sculptures, monuments, and small ornaments, as well as tumbled stones, beads, and cabochons used for jewelry.

Labradorite tumbled seems to have multiple colors including blue, green, and orange which are actually light rays reflected from different twinning surfaces of the stone. This is known as the ‘Schiller’ effect. Labradorite tumbled was first found in Canada; now there are mines in Finland, Russia, and Madagascar. It is liked for its shimmering iridescence and is popular for gemstones and cabochons.

Feldspars (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8) are a group of rock-forming tectosilicate minerals that make up about 41% of the Earth's continental crust by weight. Feldspars crystallize from magma as both intrusive and extrusive igneous rocks and are also present in many types of metamorphic rock. Rock formed almost entirely of calcic plagioclase feldspar is known as anorthosite. Feldspars are also found in many types of sedimentary rocks.

Sapphire gemstone is a variety of corundum and one of the most precious gemstones. It’s the birthstone for September. The stone is most commonly blue in color, including shades such as Cornflower Blue or Royal Blue like the engagement ring worn by Kate Middleton. Natural Fancy sapphire gemstones also occur in pink, yellow, orange, purple, and green colors. The Padparadscha sapphire gemstone is highly coveted for its unique orangish-pink color. Kashmir sapphire gemstones command the highest price, but fine-quality gems are also produced in large quantities by Burma, Sri Lanka, and Madagascar.

Also known as Rock Crystal, clear Quartz is a transparent and colorless Quartz crystal that is prized as a gemstone and is regularly cut into beads, cabochons, and faceted gems. This pure form of Quartz has been used for millennia in many cultures. Beads made of clear Quartz were a part of jewelry in ancient Mesopotamia in the 7th Millennium BC, and Aboriginal Australians used it as a talisman.

Corundum is an incredibly tough mineral, so tough in fact that the only harder naturally-occuring object is Diamond. This makes it a perfect option for industrial abrasion applications such as metal polishing and glassworks. When polished as a gemstone, red specimens are called "ruby" and blue are titled "sapphire."

Fake Turquoise is a man-made material usually sold as tumbled stone. It is made from howlite or magnesite and dyed in turquoise blue so that it resembles turquoise stone. It is often sold falsely as turquoise. It is not suitable for carving, as the dye is not able to penetrate deep into the material.