A carat is the universal weight measurement for diamonds. While the carat is usually associated with the diamond’s size, it is actually a unit of weight. One carat is 1/5 of a gram.
While two carats will appear larger than one, and three carats larger than two and so on, a carat does not have specific size measurements, because different diamond shapes and the quality of the diamond cut will all affect its proportions.
The quality of your diamond’s cut is the most important of the Four Cs, because an expertly cut diamond will return the optimal amount of light, giving you beautiful sparkle whatever the carat size. So if it’s the maximum sparkle that you’re after, focus on the diamond’s cut grade rather than carat weight, and choose a brilliant cut; these feature multiple light-reflecting facets to give you exquisite brilliance.
If it’s a large size appearance that you’re after, consider a multi-stone diamond ring or piece of jewellery. You can find stunning, sparkling pieces made up of multiple smaller stones that together equal 1 carat in total weight – such as halo or cluster styles - and they are often designed in such a way that the overall ring, earring, or pendant has an impressive size appearance. A diamond ring, diamond earrings, or pendant with 1 carat total weight of diamonds will also cost you less than a 1 carat solitaire.