Slightly Included 2
SI2 diamond prices.
SI2 stands for "Slightly Included 2" on the GIA clarity grading scale. Inclusions easily visible under magnification and may be visible to the naked eye in larger stones. Our analytics are based on 73,822 diamonds with SI2 clarity — 3,085 lab-grown and 70,737 natural.
SI2 by colour grade.
Based on 3,085 lab-grown diamonds.
Browse SI2 by shape.
Frequently asked.
What does SI2 clarity mean?
SI2 stands for "Slightly Included 2". Inclusions easily visible under magnification and may be visible to the naked eye in larger stones.
How much does a SI2 diamond cost per carat?
Based on 73,822 diamonds, SI2 lab-grown diamonds average £1,791/ct and natural SI2 diamonds average £3,029/ct.
Is SI2 clarity worth the price?
SI2 may have visible inclusions in larger stones, but offers significant value. Best for those prioritising carat weight or colour over clarity.