The Five Most Asked Questions About Black Diamonds
In recent years black diamonds have grown massively in popularity to become one of the most popular of the fancy coloured natural diamonds. The reasons for this may be that the demand for non-conventional engagement rings has grown significantly the styles of which perfectly suits the incorporation of black diamonds. Plus many celebrities are now wearing jewellery and engagement rings featuring black diamonds. However, even though black diamonds are so popular, there is still a lot that is unknown about them and a lot of misinformation and misconception surrounding these stunning gemstones. Here are answers to the five most asked questions about black diamonds:
In short: Black diamonds are real diamonds (pure carbon, Mohs 10) coloured by graphite and hematite inclusions rather than D-Z grading. Most commercial stones are treated for uniform colour. A 1.00ct round black diamond costs £200-£700 in UK 2025 pricing, versus £6,500+ for white D/VS1 natural. They suit modern halo and bezel settings; opacity means no internal sparkle, only surface lustre.
What is a black diamond? Is it real and what is the difference between black and white diamonds?
Black diamonds are absolutely real, and there are two main types: natural black diamonds, also known as fancy diamonds or Carbonados, and treated black diamonds. Natural black diamonds are rarer than other fancy-colored diamonds because they derive their color from a polycrystalline structure made of diamond, graphite, and amorphous carbon, rather than from impurities like most colored diamonds. In contrast, treated black diamonds start as low-value white diamonds with significant inclusions that are transformed through treatments like irradiation or heat to achieve their black color, making them the most affordable option. Structurally, black diamonds are nearly identical to white diamonds, both formed by high pressure on carbon deep beneath the Earth’s surface. The primary difference is the inclusion of graphite in black diamonds, which gives them their distinctive color. Despite this, they are just as real as white diamonds.
