To ensure the durability of a princess cut diamond, it’s essential to employ protective measures such as prongs or a bezel setting, regardless of the setting style chosen.
In terms of visual perception, a princess cut diamond might appear smaller when viewed from the top compared to round diamonds of equivalent weight. This is due to the distinct design of princess cuts, which necessitates a greater depth to achieve desirable light performance.
Size assessment can be somewhat misleading because princess cut diamonds are measured from side to side, rather than from point to point. Generally, a well-proportioned 1-carat princess cut diamond will measure approximately 5.5mm from side to side, while a similarly well-cut 1-carat round brilliant diamond typically has a diameter of around 6.4mm. Another perspective is that for a princess cut diamond to appear visually similar in size to a 6.5mm round brilliant diamond, it should be approximately 5.75mm in both length and width.