Tourmaline is a six-member ring cyclosilicate having a trigonal crystal system. It occurs as long, slender to thick prismatic and columnar crystals that are usually triangular in cross-section, …

Tourmalines have a wide variety of exciting colors with one of the widest color ranges of any gem. This 26.32-ct. oval pink tourmaline is from Mozambique. Trade name for pink, red, purplish …

Mar 5, 2025 · Are you curious about the different types of tourmaline? Read on as we discuss the unique properties and characteristics of these tourmaline types.

Jul 10, 2025 · Discover tourmaline's stunning colors, value, and properties. Learn why this October birthstone makes exceptional jewelry and how to identify genuine tourmaline varieties. …

What is Tourmaline? Tourmaline is the name of a large group of boron silicate minerals. These minerals share a common crystal structure and similar physical properties - but vary …

Tourmaline, borosilicate mineral of complex and variable composition. Three types of tourmaline, distinguished by the predominance of certain elements, are usually recognized: iron …

The word "rainbow" is used figuratively to describe tourmaline. In reality, it is a well recognized fact that tourmaline's diversity in color is not limited to the seven colors of the rainbow. …

Tourmaline is the most colorful of all gemstones. It occurs in all colors, but pink, red, green, blue and multicolored are its most well-known gem colors. Scientifically, tourmaline is not a single …

The ultimate guide to tourmaline. With over 1000 unique hues, large carat sizes and crystal clarity, tourmaline has it all! This is everything you need to know

Mar 5, 2019 · Tourmaline refers to a group of minerals that vary in chemical composition, known for their extensive range of colors and varieties. Learn more about tourmaline symbolism, …