If you wish to make your loved one say ‘wow’ after seeing the diamond engagement ring, then you should get her a ring with a larger diamond carat size. As you would probably know, carats are the universal measurements for diamonds, emeralds, sapphires, and all other gemstones. As diamond rings carat size increases, the price and rarity of the gemstone will also rise exponentially. However, this does not mean all diamond engagement rings are expensive. It is true that the price of 0.5, 1.0, 1.5, 2.0, 2.5, and 3-carat diamond engagement rings are relatively high. So, customers who are on a tight budget should look for diamond rings with odd diamond carat sizes such as 0.40, 0.90, 1.40, and more. This will surely help you to save at least hundreds of your valuable dollars. Another important thing couples who are looking for diamond rings should realize is that the carat size of gemstones will not be the same when it comes to visual proportions. For instance, a one-carat sapphire and one-carat diamond will not look the same in terms of visual proportions.