Blue diamond is considered as the most expensive ... laboratory director Stephen Andarakis. Other rare colors include pink, green, and purple. Also rare but lesser rare than the aforementioned ...

In comparison, natural diamonds have a hardness of around 100 GPa and a thermal stability up to around 700°C Despite the diamond’s rare qualities ... much higher. Ben Green, Associate Professor ...

Blue diamonds only need a tiny amount of boron to produce colour, but they are much rarer than yellow ones. A green diamond means it has been near radioactive mineral at some point in its history.

Blood moon 2025: UK treated to rare lunar eclipse ... The new diamond could be groundbreaking for key industries that use the material (Credits: Getty Images) Ben Green, Associate Professor ...