2023年9月8日 · Malachite is a popular green mineral known for its distinctive color and unique banded patterns. It is primarily composed of copper carbonate hydroxide [Cu2CO3 (OH)2]. Malachite forms under specific geological conditions and is often associated with copper deposits. Here’s an overview of its occurrence and formation:

The vivid green color, bright polished luster, banding and eyes of malachite make it very popular as a gemstone. It is cut into cabochons , used to produce beads, sliced into inlay material, sculpted into ornamental objects, and used to manufacture tumbled stones .

2021年3月18日 · Malachite has the following properties: Mohs Hardness: 3.5 to 4.0 Specific Gravity: 3.9 Streak: Light Green Fracture: Splintery or can be conchoidal Malachite Luster: Glassy, silky, or even dull Crystal System: In very rare occurrences, Monoclinic Malachite Chemical Formula: Cu₂CO₃(OH)₂

Malachite Demesmaekerite. Comments: Pale green crystals of demesmaekerite on dark green malachite. Location: Musonoi Mine, Katanga, Democratic Republic of the Congo. Scale: Crystal Size 3mm. © John Veevaert

Luster: Malachite has a silky to adamantine (diamond-like) luster when polished, and a dull to earthy luster in its natural state. Hardness: Malachite has a Mohs hardness of 3.5 to 4, making it relatively soft and prone to scratching.

Luster: Malachite exhibits a vitreous to silky luster when polished, giving it a smooth, reflective surface. In its natural form, malachite can have a dull to earthy luster. Inclusions: Malachite often contains inclusions of other minerals such as azurite or chrysocolla, which can add to its aesthetic value. These inclusions can create a ...

2023年10月27日 · Malachite has several types of luster. If it’s in its best form, it can have an adamantine luster, which is super sparkly, almost like a diamond. But most of the time, it has a vitreous luster, which means it shines like glass.

2025年1月1日 · When polished, it develops a silky to vitreous luster, though some specimens may retain a more matte appearance depending on their internal structure. True malachite is always opaque – any transparent “malachite” is either another mineral or synthetic.

2024年5月13日 · The luster of real malachite is usually glassy or silky, and the surface may be slightly rough or have uneven breaks. If the surface of the stone is too smooth or has a plastic feel to it, then it may be fake.

Luster: In terms of luster, malachite can be adamantine, dull, silky or vitreous (glassy). Streak: Malachite streaks green or light green. Hardness: Malachite's hardness ranges from 3.5 to 4.5 on the Moh's scale. Specific Gravity: Malachite's specific gravity ranges from 3.6 to 4.05.