Santa Rosa tourmalines, particularly those from the Santa Rosa mine in…

Santa Rosa tourmalines, particularly those from the Santa Rosa mine in Brazil, are known for their rich, vibrant colors, often exhibiting teal-blue to dark emerald green hues, and are prized for their gem quality and transparency.

9 grams

Here’s a more detailed look at their properties:
Color:
Santa Rosa tourmalines are renowned for their beautiful and saturated colors, ranging from teal-blue (indicolite) to dark emerald green.
Translucence:
They are typically transparent, allowing for a high degree of light transmission.
Inclusions:
While generally of high quality, they may exhibit minor internal wisps of horizontal fracture inclusions.
Luster:
Santa Rosa tourmalines display a super glassy luster.
Striations:
They often exhibit striations parallel to their length, a characteristic feature of tourmaline crystals.
Zoning:
Some crystals display subtle horizontal banding or zoning, with variations in color intensity.
Mine:
The Santa Rosa mine, located in Itambacuri, Minas Gerais, Brazil, is a source of these exceptional tourmaline crystals.
History
Santa Rosa has produced some of the finest tourmaline crystal specimens in the world, though most of them were destroyed in collecting or cut for gemstones in the heyday of Brazilian gem mining.