Gemstone Insight: Tourmaline

Gemstone Insight: Tourmaline


Tourmaline, celebrated for its opulent spectrum of hues and diverse varieties, graces the globe from numerous prestigious origins. Brazil, Sri Lanka, Madagascar, Nigeria, Mozambique, Afghanistan, the United States, and other regions each contribute to this rich tapestry of tourmaline varieties, making it a highly coveted gemstone.


Tourmaline forms through complex geological processes, primarily in igneous and metamorphic rocks, as well as through hydrothermal activity and in pegmatite deposits. It can also be found in some sedimentary environments. The specific conditions during formation, including the presence of various chemical elements, contribute to the wide range of colors and characteristics seen in tourmaline gemstones.


Tourmaline is a diverse gemstone known for its wide range of colors, making it one of the few gems found in almost every colour of the rainbow. Its colouration is influenced by various factors, including the presence of specific chemical elements and geological conditions. Common colours include green, pink (rubellite), blue, black (schorl), colourless, and multicoloured varieties. Rare and highly prized types like Paraíba tourmaline exhibit vibrant neon-blue to green-blue hues. The diversity of tourmaline's colours contributes to its popularity and value among gemstone lovers.


Tourmaline's rarity varies depending on factors like type, colour, and origin. Common varieties are relatively abundant, while rare and highly prized types, such as Paraíba tourmaline, are exceptionally scarce and valuable. The rarity of tourmaline is further influenced by factors like gem quality and market demand. While not as rare as some gemstones, certain tourmaline colours and varieties command attention for their beauty and limited availability, making them sought after by collectors and enthusiasts.


Tourmaline has a moderate hardness, typically ranking between 7 and 7.5 on the Mohs scale. While it is not as hard as some other gemstones like diamonds, it still offers reasonable durability. Care should be taken to avoid scratches and damage, making protective settings and gentle handling important for maintaining the beauty of the tourmaline piece.


Tourmaline is a unique gemstone known for its diverse range of colors and optical effects. It exhibits pleochroism and can display different colours from various angles. With a moderate hardness (7-7.5 on the Mohs scale), it offers reasonable durability. Tourmaline's complex crystal structure and chemical composition contribute to its distinct properties. It can be transparent to opaque and comes in various lusters. The gem's value varies based on colour, clarity, size, and origin. Additionally, tourmaline holds symbolism related to protection and healing.

← Older Post Newer Post →