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VS Diamond vs SI Diamond: Which Will You Choose?

Navigating the world of diamonds can be as intricate as the gems themselves. When selecting a diamond for your jewelry piece, understanding factors like carat size, shape, and origin (natural or lab-created) is crucial. Equally important is discerning the difference between SI (Slightly Included) and VS (Very Slightly Included) diamonds. This guide aims to shed light on this aspect, helping you make an informed choice.

Understanding Clarity Grade:

A diamond's clarity grade significantly influences both its beauty and price. Clarity refers to the presence or absence of inclusions and blemishes, evaluated using the Diamond Clarity Scale, which comprises 11 specific grades.

Clarity Grades:

  • Flawless (FL): The most perfect diamonds, free from blemishes or inclusions, even under 10x magnification.
  • Internally Flawless (IF): No inclusions visible under 10x magnification.
  • Very, Very Slightly Included (VVS1 and VVS2): Slight inclusions challenging to observe under 10x magnification.
  • Very Slightly Included (VS1 and VS2): Minor inclusions visible under 10x magnification.
  • Slightly Included (SI1 and SI2 and SI3): More noticeable inclusions under 10x magnification, with SI1 having fewer and smaller inclusions.
  • Included (I1, I2, and I3): Lowest clarity grade with obvious inclusions under 10x magnification, affecting transparency and brilliance.

SI Diamonds vs. VS Diamonds:

Differentiating between SI and VS diamonds is best achieved by considering the 4 C's: cut, color, clarity, and carat weight.

  • Cut: The cut is paramount, determining a diamond's sparkle and quality. VS diamonds often feature superior cuts compared to SI diamonds, making them a choice for those prioritizing cut quality.
  • Color: Diamonds are graded from D to Z, with D, E, and F grades considered excellent. VS diamonds typically offer superior color quality.
  • Clarity: VS diamonds have fewer visible inclusions than SI diamonds, enhancing their appeal when magnified 10x.
  • Carat Weight: Carat weight directly impacts a diamond's price, with VS diamonds generally being larger than SI diamonds. Choose based on your size preferences.

Pros and Cons:

SI Diamonds:



  • Susceptible to breaking if not inspected carefully.
  • Large and dark inclusions may affect durability.

VS Diamonds:


  • Excellent across the 4 C's.
  • Inclusions are typically not visible to the naked eye.
  • Minimal impact on brilliance and clarity.


  • Higher price tag.


The choice between SI and VS diamonds ultimately depends on personal preference, budget, and the importance of the 4 C's. While VS diamonds offer fewer inclusions and blemishes, they come at a higher cost. SI diamonds, despite visible inclusions, can still be attractive and worth considering, especially for those mindful of their budget. Your decision should align with your priorities and preferences.