Stibnite Crystal Morocco Natural Antimony Sulfide Mineral Specimen 30-50mm Genuine Collector Display Stone with Certificate

Stibnite Crystal – Natural Antimony Sulfide Mineral from Morocco

This genuine Stibnite specimen from Morocco is a striking metallic mineral, carefully selected for crystal structure and collector appeal. Each piece measures approximately 30–50mm, making it an ideal size for mineral cabinets, display cases, or educational collections. The photograph shows an example of the actual specimen you will receive. Please refer to the listing images for full sizing and natural variation within this range.

Your Stibnite crystal includes a Certificate of Authenticity lifetime guarantee generic card, confirming it is a 100% genuine natural mineral specimen.

Mineral Species & Chemical Composition

Stibnite is an antimony sulfide mineral with the chemical formula:

Sb₂S₃

It belongs to the sulfide mineral group and crystallises in the orthorhombic crystal system. Stibnite is the primary ore of antimony and is recognised for its elongated, bladed or prismatic crystal formations.

Key mineralogical properties include:

• Mineral Group: Sulfide

• Chemical Formula: Sb₂S₃

• Crystal System: Orthorhombic

• Crystal Habit: Elongated prismatic or bladed crystals

• Colour: Lead-grey to steel-grey

• Lustre: Bright metallic

• Hardness: 2 on the Mohs scale

• Streak: Grey to black

Its relatively low hardness means specimens should be handled carefully, preserving the sharp, reflective crystal faces.

Geological Formation – Moroccan Deposits

Morocco is internationally known for producing high-quality Stibnite specimens from hydrothermal mineral deposits. Stibnite forms in low- to medium-temperature hydrothermal veins, where antimony-rich fluids circulate through fractures in host rock.

As these fluids cool, antimony combines with sulfur and crystallises into elongated, metallic crystals. Stibnite is commonly associated with quartz, calcite, baryte, realgar, or other sulfide minerals depending on the specific deposit conditions.

Moroccan localities are particularly valued for producing well-defined crystal clusters and aesthetically pleasing metallic formations, making them highly desirable among collectors.

Appearance & Crystal Characteristics

Stibnite is known for its distinctive bright metallic sheen and blade-like crystal growth. Specimens in the 30–50mm range may display parallel crystal groupings, radiating sprays, or compact prismatic clusters.

The steel-grey to silvery metallic colour gives the mineral a dramatic appearance under natural light. Fine striations along crystal faces are common and reflect its orthorhombic structure.

No artificial treatments or enhancements have been applied beyond careful cleaning. Natural surface features, minor matrix attachment, or small imperfections are part of its geological authenticity.

Collecting & Display Appeal

Stibnite is highly sought after by mineral collectors due to its unique crystal habit and strong metallic lustre. Moroccan examples are especially popular for their aesthetic quality and well-formed crystal clusters.

This specimen size is suitable for:

• Sulfide mineral collections

• Metallic mineral display cabinets

• Educational geology sets

• Collector gift pieces

Stibnite has been traditionally associated in some belief systems with focus and determination; these associations are cultural rather than scientific.

Authenticity & Individual Selection

Each Stibnite specimen is a carefully chosen genuine mineral from Morocco. The listing photograph shows an example of the actual specimen you will receive within the stated 30–50mm size range. Please review all images for scale and natural variation in crystal form.

Every piece is supplied with a Certificate of Authenticity lifetime guarantee generic card, confirming its genuine natural origin.

A classic example of hydrothermal antimony mineralisation, this Moroccan Stibnite crystal offers strong metallic character, geological significance, and collector appeal, making it a distinctive addition to any serious mineral collection.