This rare natural Hackmanite crystal from Afghanistan is approximately 34.5 carats and measures 29 × 25 × 15 mm. It is a single, untreated specimen with an off-white to milky white body color and semi-transparent clarity. The crystal shows its natural cubic structure with authentic internal inclusions and natural surface textures, confirming its genuine earth-mined origin.

Under UV light, this fine mineral specimen displays strong fluorescence, glowing vibrant pink to violet. It also shows phosphorescence, meaning it can continue to glow briefly after the UV light is removed. These light-reactive properties make it highly desirable for collectors of rare fluorescent minerals.

• Natural, untreated Hackmanite (Sodalite group)
• Single large specimen: approx. 34.5 carats
• Color: off-white to white; clarity: semi-transparent
• Strong UV fluorescence (pink/violet glow)
• Shows phosphorescent afterglow
• Cubic crystal system; silicate mineral class
• Origin: Afghanistan
• Category: fine mineral specimen; rarity: rare

Geolgoy and Crystal Information about This Hackmanite 

• The crystal displays a cubic (isometric) crystal system, typical of Hackmanite from the sodalite group.
• Its off-white to translucent appearance is naturally formation with minor internal growth zoning.
• The specimen likely formed in an alkaline igneous environment, such as nepheline syenite or pegmatitic pockets.
• Visible internal fractures and inclusions are consistent with natural geological pressure and uplift.
• There is Strong pink-orange fluorescence under UV light is caused by sulfur-related color centers within the crystal lattice.
• The brief afterglow (phosphorescence) suggests well-developed lattice defects that trap and release energy.

FAQs

Does it really glow under UV light?

Yes. It shows strong pink to violet fluorescence under ultraviolet light.

Is it treated or enhanced?

No. It is 100% natural, earth-mined, and untreated.

Is this suitable for collectors?

Yes. Its size, fluorescence, and Afghan origin make it an excellent collector specimen.