The heart shape is the most overtly romantic diamond cut — a modified brilliant with a distinctive cleft at the top. It requires exceptional cutting skill to achieve symmetrical proportions and balanced lobes. Heart shaped diamonds are a bold, meaningful choice for those who want their engagement ring to make a romantic statement.

A halo setting surrounds the centre diamond with a border of smaller pavé diamonds, creating a frame of light that makes the centre stone appear 20–30% larger. Halo settings add vintage character and maximum sparkle, catching light from every angle.

Under £2,500, a 1ct lab-grown diamond engagement ring in platinum or 18K gold is well within reach — with budget left over for a more intricate setting style such as halo or side stone.