Pink Tourmaline in Quartz
Elbaite (Tourmaline group) in Quartz · Semi-Precious Gemstone / Mineral Specimen
Crystal System
Trigonal (Tourmaline) / Trigonal (Quartz). Habit in this specimen is massive/tumbled; crystal form is elongated prismatic.
Mineral Group
Silicates (Cyclosilicate for Tourmaline; Tectosilicate for Quartz)
Chemical Formula
Na(Li,Al)3Al6(BO3)3Si6O18(OH)4 (Elbaite) + SiO2 (Quartz). Manganese (Mn) traces typically cause the pink hue.
Formation Process
Igneous/Hydrothermal: Forms during the cooling of late-stage magmatic fluids in granitic pegmatites and quartz veins under high pressure.
About This Crystal
A tumbled, polished stone featuring mottled sections of opaque to translucent pink Elbaite tourmaline embedded within a milky to clear white quartz matrix. The luster is vitreous (glassy) on polished surfaces.
Physical Characteristics
Color: Pink and white; Streak: White; Cleavage: None/Indistinct; Fracture: Conchoidal to uneven; Specific Gravity: 2.65–3.10; Fluorescence: Generally inert to weak pink under UV.
Optical Properties
Refractive Index: 1.544-1.640; Birefringence: 0.009 (Quartz) / 0.018 (Tourmaline); Pleochroism: Strong in tourmaline sections, typically pink to pale pink.
Hardness & Durability
Origin Region
Brazil (Minas Gerais), Madagascar, and Afghanistan. Frequently found in granitic pegmatites.
Hardness & Durability
Mohs hardness: 7 to 7.5. High durability and excellent wearability for jewelry, though quartz can be brittle.
Care & Maintenance
Clean with warm soapy water and a soft brush. Avoid ultrasonic cleaners and steam cleaning which may stress internal inclusions. Store away from harder stones like diamonds.
Rarity & Value
Common (as tumbled material). Value is determined by color intensity of the pink and the clarity of the quartz matrix. Most tumbled pieces are inexpensive.
Special Characteristics
Piezoelectric and pyroelectric properties in the tourmaline component. Features internal fracturing (veleity) and 'frozen' crystalline structures within the matrix.
Lore & History
Historically, pink tourmaline was often confused with ruby. Symbolically associated with the heart chakra, it is traditionally used as a stone of emotional healing, compassion, and self-love.