Once you get anywhere close to the 5-carat mark, their availability and price reflect how unusual such good diamonds are. Yet there are many things, which you have to understand before purchasing a diamond ring 5-carat.
Say, if you purchase a small bread loaf, and it comes sliced, then it will have a fixed number of slices. A loaf twice as long will possibly have twice the number of slices. This logic does not necessarily apply to a five-carat diamond though.
If you purchase a round brilliant cut diamond that weighs one carat, it will have 58 facets. However, when you purchase a five-carat gemstone, it will still have the exact number of facets, and not five times of what the one-carat gemstone has. This is because every type of diamond cut has a fixed number of facets to showcase other expected properties to the maximum. Besides, as the gemstones get larger in size, their reflective properties, and general appearance can change too.