Buyer's Guide: Internally Flawless (IF) Diamonds
Internally Flawless diamonds offer a brilliant alternative to the Flawless grade — delivering identical internal purity at a meaningfully lower price. An IF diamond has zero internal inclusions under 10x magnification; the only characteristics that prevent it from receiving an FL grade are insignificant surface blemishes such as minor polish lines or naturals. For nearly every practical purpose, an IF diamond is indistinguishable from a Flawless stone, making it the smart choice for buyers who demand top-tier clarity without the collector premium.
Why IF Is the Smart Alternative to Flawless
The surface blemishes found in IF diamonds are often so trivial that they could be removed through minor re-polishing — though doing so would reduce carat weight and typically is not worth the trade-off. What matters most is that these blemishes are external only and have absolutely no impact on the diamond's light performance, brilliance, or fire. The savings compared to FL typically range from 10-20% for comparable carat weight and color, which can be redirected toward a larger stone or a more elaborate setting.
Who Should Buy an IF Diamond?
IF is an excellent choice for buyers who want premium quality without the absolute ceiling price. It is especially well-suited for emerald-cut and asscher-cut diamonds where the large, open facets demand exceptional clarity. IF is also a strong pick for larger stones (above 2 carats) where any inclusion would be more noticeable, and for buyers who plan to pair the diamond with a high-profile setting like a solitaire or three-stone design. If you are deciding between IF and VVS1, the IF provides a slight edge in certified grade with the same eye-clean performance.
Best Settings for IF Diamonds
Because IF diamonds are internally flawless, every setting style showcases them beautifully. Solitaire and bezel settings highlight the stone's purity, while halo and pave designs pair the exceptional clarity with additional sparkle. For step-cut stones, a simple four-prong setting allows maximum light through the wide table, letting the IF clarity speak for itself. Explore our design-your-own tool to pair an IF diamond with your ideal setting.