Black Carbonado Stones from Egypt (Lot of 3pcs), Black Diamond, Raw Black Stone

3 pieces . Please note: The crystals you receive will be chosen at random.

• Quantity: 3 pieces per lot
• Origin: Egypt
• Color: Deep black with natural, rough texture
• Size: 2-3cm per piece
• Rarity: Carbonado is a rare forms of diamond, often found in only a few locations around the world

Composition of Carbonado

Carbonado, also known as "black diamond," is a unique and rare form of polycrystalline diamond. Its composition and structure differ from that of traditional diamonds, giving it distinct physical and chemical properties.

• Carbon Content: Like all diamonds, Carbonado is primarily composed of carbon atoms arranged in a crystalline structure. However, unlike conventional diamonds, which consist of a single crystal, Carbonado is polycrystalline, meaning it is made up of many tiny diamond crystals bonded together.

• Other Elements: In addition to carbon, Carbonado contains other elements such as:

  • Graphite: Small inclusions of graphite, another form of carbon, are often found within Carbonado, contributing to its dark color.
  • Iron and Other Minerals: Carbonado often contains traces of iron, magnetite, hematite, and other minerals, which can be found in the pores and interstices between the diamond crystals.

• Porosity: One of the defining features of Carbonado is its porous structure. The material contains numerous tiny voids and channels, giving it a spongy or granular appearance, unlike the clear, crystalline structure of traditional diamonds.

Key Characteristics of Carbonado:

1. Composition: Carbonado is primarily made up of diamond microcrystals, but it also contains other carbon-based minerals like graphite, along with inclusions of other elements such as iron, nickel, and trace metals.

2. Hardness: Like other diamonds, carbonado ranks 10 on the Mohs hardness scale, but its polycrystalline structure makes it even more durable and resistant to cracking than traditional diamonds.

3. Formation: The origin of carbonado is still debated. Unlike other diamonds formed deep in the Earth's mantle, carbonado is believed to have a different formation process, possibly involving:

   • Extraterrestrial origins: Some researchers suggest that carbonado may have formed in space, possibly due to an ancient supernova or from meteoritic impacts.
   • Sedimentary or hydrothermal processes: Another theory posits that carbonado could have formed in Earth's surface environments under unusual conditions.

4. Geological Occurrence: Carbonado is found primarily in alluvial deposits in Brazil and the Central African Republic. It does not occur in kimberlite or lamproite pipes, the primary sources of typical diamonds.

5. Applications: Due to its extreme toughness and resistance to abrasion, carbonado has industrial applications, particularly in cutting, drilling, and grinding tools. However, because it lacks the transparent clarity of gem-quality diamonds, it is not commonly used in jewelry.

6. Color and Appearance: Carbonado’s black, porous, and irregular surface distinguishes it from other diamonds, and its opacity is due to the inclusions and the presence of non-diamond carbon.

In summary, carbonado is a unique form of diamond with distinct physical properties and possible extraterrestrial origins, making it both scientifically interesting and valuable for industrial uses.