Black Tourmaline Obelisk Point Natural Schorl Crystal Tower Genuine Black Tourmaline Collector Piece with Certificate of Authenticity

Black Tourmaline Obelisk Point – Natural Schorl Crystal Tower

This Black Tourmaline Obelisk Point is a genuine natural crystal specimen, expertly shaped and polished into a classic tower form while preserving the integrity of the mineral. The photograph shows the exact piece you will receive. Please refer to the listing images for full sizing and scale details.

Each obelisk includes a Certificate of Authenticity lifetime guarantee generic card, confirming that this is a genuine natural Black Tourmaline specimen.

Mineral Identification & Crystal Classification

Black Tourmaline is the variety known as Schorl, a member of the tourmaline group of complex boron silicate minerals. Its general chemical formula is NaFe₃Al₆(BO₃)₃Si₆O₁₈(OH)₄, reflecting its sodium, iron and aluminium-rich composition. Schorl crystallises in the trigonal crystal system and typically forms elongated, striated prismatic crystals.

The deep black colour is caused by high iron content within the crystal structure. Natural Black Tourmaline often displays longitudinal striations along its crystal faces, a characteristic growth feature of the species. Even when polished into an obelisk, subtle internal textures and structural lines may remain visible.

Tourmaline has a Mohs hardness of approximately 7 to 7.5, making it a durable mineral suitable for carving and display. Its lustre ranges from vitreous to slightly resinous depending on surface finish.

Geological Formation & Occurrence

Black Tourmaline commonly forms in igneous and metamorphic environments, particularly within granitic pegmatites and high-grade metamorphic rocks. It develops during the slow crystallisation of boron-rich fluids, often in association with minerals such as quartz, feldspar, mica and garnet.

Pegmatite environments provide ideal conditions for the growth of large, well-formed tourmaline crystals due to their slow cooling rates and concentration of rare elements. Schorl is the most abundant variety of tourmaline and is found in many regions worldwide, including Brazil, Africa, Afghanistan and parts of the United States.

The formation process can produce crystals with strong vertical striations and occasional internal fractures or inclusions, all natural indicators of geological growth.

Obelisk Tower Shape & Finish

This specimen has been cut and polished into a traditional obelisk or tower shape, featuring:

• A flat, stable base

• Four polished sides

• A pointed termination

• Smooth, glossy finish

The obelisk form enhances the stone’s natural black tone while maintaining visible internal textures. The carving process does not alter the mineral’s composition; it simply refines the external shape for aesthetic display.

No dyes or artificial colour enhancements have been applied. The deep black colour is entirely natural to Schorl.

Collector, Decorative & Gifting Appeal

Black Tourmaline obelisks are popular for:

• Mineral and crystal collections

• Desk or shelf display

• Contemporary décor accents

• Study of boron silicate mineral species

• Unique natural gemstone gifts

The strong geometric tower shape combined with the mineral’s natural striations creates a visually striking display piece.

In spiritual traditions, Black Tourmaline has been traditionally associated with grounding symbolism. These associations are cultural in nature and are not presented as scientific or medical claims.

Authenticity & Assurance

• 100% genuine natural Black Tourmaline (Schorl)

• Trigonal crystal system boron silicate mineral

• Polished obelisk tower form

• Carefully selected individual specimen

• Includes Certificate of Authenticity lifetime guarantee generic card

• The exact crystal shown in the photographs is the one you will receive

This Black Tourmaline Obelisk Point combines the geological significance of Schorl with a refined tower shape, offering a durable and visually distinctive addition to any serious mineral or crystal collection.