Black Tourmaline Tower Natural Polished Schorl Crystal Point Mineral Specimen
£ 20.40
GENUINE BLACK TOURMALINE TOWER – NATURAL POLISHED SCHORL CRYSTAL POINTThis impressive Black Tourmaline Tower is carved and polished from genuine
natural Schorl, the black variety of tourmaline. Carefully shaped into a standing crystal point, this specimen highlights the mineral’s deep black colour, natural internal structure, and distinctive vertical striations.The photographs show the actual specimen you will receive, allowing you to see the precise finish, proportions, and surface character. Please refer to the images for full sizing and scale.This crystal is a genuine mineral specimen and includes a Certificate of Authenticity lifetime guarantee generic card, confirming its natural origin. MINERAL SPECIES & SCIENTIFIC CLASSIFICATIONBlack Tourmaline is the common name for Schorl, a sodium iron aluminium borosilicate mineral within the tourmaline group.Scientific details:
• Mineral Name: Schorl (Black Tourmaline)
• Mineral Group: Tourmaline (Cyclosilicate)
• Chemical Formula: Complex sodium iron aluminium borosilicate
• Crystal System: Trigonal
• Hardness: 7–7.5 on the Mohs scale
• Lustre: Vitreous to sub-vitreous
• Transparency: Opaque
• Typical Crystal Habit: Elongated prismatic crystals with strong vertical striationsTourmaline is one of the most chemically complex mineral groups, forming under a wide range of geological conditions. GEOLOGICAL FORMATION & OCCURRENCEBlack tourmaline commonly forms in granitic pegmatites, metamorphic rocks, and hydrothermal veins. It develops when boron-rich fluids interact with aluminium and iron-bearing host rocks during the late stages of magma crystallisation.Schorl is often found associated with minerals such as:
• Quartz
• Feldspar
• Mica
• LepidoliteIts prismatic crystal structure and durability make it a popular mineral for both collectors and lapidary use. STRUCTURE, SURFACE & POLISHED TOWER FINISHThis Black Tourmaline Tower has been shaped and polished into a vertical point, emphasising the mineral’s natural elongated growth habit. While polished, the piece retains visible signs of its internal structure and natural mineral character.Features may include:
• Deep black colour
• Subtle vertical growth lines
• Natural internal inclusions
• Smooth polished faces
• Flat base for stable displayThe tower form enhances its geometric appearance while preserving the integrity of the natural stone. DISPLAY, COLLECTING & DECORATIVE APPEALBlack tourmaline towers are popular for:
• Mineral and crystal collections
• Display cabinets and shelves
• Desk or home décor
• Educational geology study
• Unique natural giftsIn various traditions, black tourmaline has been historically associated with protective symbolism; these interpretations are rooted in folklore rather than scientific classification. Today, schorl is primarily valued for its mineralogical properties, durability, and striking appearance. AUTHENTICITY & WHAT YOU WILL RECEIVE
• Genuine Black Tourmaline (Schorl) mineral specimen
• Polished tower form with standing base
• The exact specimen shown in the photographs
• Carefully selected display-quality piece
• Includes Certificate of Authenticity lifetime guarantee generic cardA bold and timeless mineral specimen combining natural geological origin with elegant polished presentation, ideal for collectors and admirers of classic black crystals.
natural Schorl, the black variety of tourmaline. Carefully shaped into a standing crystal point, this specimen highlights the mineral’s deep black colour, natural internal structure, and distinctive vertical striations.The photographs show the actual specimen you will receive, allowing you to see the precise finish, proportions, and surface character. Please refer to the images for full sizing and scale.This crystal is a genuine mineral specimen and includes a Certificate of Authenticity lifetime guarantee generic card, confirming its natural origin. MINERAL SPECIES & SCIENTIFIC CLASSIFICATIONBlack Tourmaline is the common name for Schorl, a sodium iron aluminium borosilicate mineral within the tourmaline group.Scientific details:
• Mineral Name: Schorl (Black Tourmaline)
• Mineral Group: Tourmaline (Cyclosilicate)
• Chemical Formula: Complex sodium iron aluminium borosilicate
• Crystal System: Trigonal
• Hardness: 7–7.5 on the Mohs scale
• Lustre: Vitreous to sub-vitreous
• Transparency: Opaque
• Typical Crystal Habit: Elongated prismatic crystals with strong vertical striationsTourmaline is one of the most chemically complex mineral groups, forming under a wide range of geological conditions. GEOLOGICAL FORMATION & OCCURRENCEBlack tourmaline commonly forms in granitic pegmatites, metamorphic rocks, and hydrothermal veins. It develops when boron-rich fluids interact with aluminium and iron-bearing host rocks during the late stages of magma crystallisation.Schorl is often found associated with minerals such as:
• Quartz
• Feldspar
• Mica
• LepidoliteIts prismatic crystal structure and durability make it a popular mineral for both collectors and lapidary use. STRUCTURE, SURFACE & POLISHED TOWER FINISHThis Black Tourmaline Tower has been shaped and polished into a vertical point, emphasising the mineral’s natural elongated growth habit. While polished, the piece retains visible signs of its internal structure and natural mineral character.Features may include:
• Deep black colour
• Subtle vertical growth lines
• Natural internal inclusions
• Smooth polished faces
• Flat base for stable displayThe tower form enhances its geometric appearance while preserving the integrity of the natural stone. DISPLAY, COLLECTING & DECORATIVE APPEALBlack tourmaline towers are popular for:
• Mineral and crystal collections
• Display cabinets and shelves
• Desk or home décor
• Educational geology study
• Unique natural giftsIn various traditions, black tourmaline has been historically associated with protective symbolism; these interpretations are rooted in folklore rather than scientific classification. Today, schorl is primarily valued for its mineralogical properties, durability, and striking appearance. AUTHENTICITY & WHAT YOU WILL RECEIVE
• Genuine Black Tourmaline (Schorl) mineral specimen
• Polished tower form with standing base
• The exact specimen shown in the photographs
• Carefully selected display-quality piece
• Includes Certificate of Authenticity lifetime guarantee generic cardA bold and timeless mineral specimen combining natural geological origin with elegant polished presentation, ideal for collectors and admirers of classic black crystals.
