Pink diamonds are considered extremely rare due to the unique natural processes that create their colour. Only a small percentage of diamonds exhibit pink hues, and these stones are mostly found in the Argyle mine in Australia (which has now closed). The scarcity, combined with their stunning beauty, makes them highly sought after, contributing to their high price.

The pink colour in diamonds is not due to the presence of any specific element, but rather a result of structural changes in the diamond's crystal lattice. These changes, often referred to as "plastic deformation," cause the diamond to absorb specific wavelengths of light, resulting in the pink hue. Unlike other coloured diamonds, the colour comes from a natural flaw or distortion in the crystal structure.

Pink diamonds are increasingly seen as a valuable investment due to their rarity and consistent demand. Their prices have historically appreciated over time, particularly for high-quality stones. However, like any investment, their value can fluctuate depending on the market, so it's important for buyers to understand the dynamics of the diamond industry and seek expert advice.

Pink diamonds are rare and more expensive than traditional diamonds, particularly those with vivid color, making them an incredibly unique addition to any engagement ring. Not only are they unique, but they are incredibly durable, ranking 10 on the Mohs scale. The colour intensity can vary from light blush to deep hues, with more intense colors being more expensive. Simple, elegant settings often work best to highlight a pink diamond's beauty. Overall, pink diamonds offer a beautiful, distinctive, and durable option for engagement rings, though they come with a higher cost.