Diamond comparison
VS2 vs SI1 Diamond Clarity
The step from VS2 to SI1 can create meaningful savings, but it also increases the importance of inspecting the actual inclusion map and video.
VS2
Often easier to buy sight-unseen, though inspection still matters
SI1
Can be excellent value when eye-clean; variability is wider
What actually changes?
The step from VS2 to SI1 can create meaningful savings, but it also increases the importance of inspecting the actual inclusion map and video.
How to choose
- Compare stones of similar carat and cut quality.
- Look at the actual video or stone at normal viewing size.
- Check measurements, not only grade labels.
- Decide whether you can see and prefer the more expensive option.
- Keep the return policy strong enough to inspect the final choice.
Editorial references
Core gemology references: Gemological Institute of America (GIA) diamond education and research materials. Consumer terminology and disclosure principles: U.S. Federal Trade Commission Jewelry Guides. Last reviewed August 2026.