Once you've determined what cut, color, and clarity grade you're looking for in a diamond, it's easy to determine the carat weight of diamond that will fit within your budget.

What Size Is Best?

• To choose the best carat weight of diamond, consider her style, the size of her finger, the size of your setting, and your budget.
• If you have a set budget, explore all your options and you'll find that there is a wide range of diamond carat weights and qualities available in your price range.
• If your recipient is very active or not used to wearing jewelry, she may find herself bumping or nicking her new ring. Consider a smaller size diamond or a setting that protects a larger diamond from getting knocked against doors and counters.
• Also keep in mind that the smaller the finger, the larger the diamond will appear. A 1½-carat diamond solitaire looks much larger on a size 4 finger than a size 8.
• If you have already chosen a setting, make sure you choose a diamond to fit. Look for the diamond size specifications of your ring or ask your Blue Nile diamond and jewelry consultant what size diamond you should look for.
• Finally, if a large carat weight is important to you, yet you're working within a budget, consider a diamond with a good cut, SI1–SI2 clarity, and an I or J color grade.