SI1 vs VS1 Diamond Clarity

Quick answer: SI1 (Slightly Included 1) diamonds have small inclusions visible at 10x magnification and sometimes, in larger stones, to the naked eye. VS1 (Very Slightly Included 1) diamonds have minor inclusions that are very rarely visible without magnification. A carefully chosen "eye-clean" SI1 can look identical to VS1 in brilliant cuts and costs less. Choose VS1 for step cuts, larger stones or peace of mind; choose an eye-clean SI1 to stretch your budget.

SI1 vs VS1 at a Glance

How to Pick an Eye-Clean SI1

• Look at magnified photos or videos.
• Prefer inclusions near the edges, not under the table.
• Prefer white or transparent inclusions over dark ones.
• Avoid large feathers that reach the surface.

Read diamond inclusions explained.

Shown: 0.40 Ct Pear Shape D Color SI1 Lab Grown Diamond

Where to Spend Your Budget

For most buyers, cut quality has the biggest impact on beauty, followed by color. Clarity only matters if you can see inclusions. That is why an eye-clean SI1 with an excellent cut often beats a poorly cut VVS stone.

Clarity Choices at Ivevar

We offer SI1, VS and VVS lab grown diamonds and help you choose eye-clean stones, set by hand in our Surat workshop. Every order ships free worldwide, with 30-day easy returns. Browse pear lab diamonds.

Shop SI1 Pear Lab Diamonds

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Frequently Asked Questions

Is SI1 good for an engagement ring?

Yes, if it is eye-clean.

Can you see inclusions in SI1?

Sometimes in larger stones; many are eye-clean.

Is VS1 worth the extra cost?

For step cuts and larger stones, often yes.

Which matters more, clarity or cut?

Cut.

Do SI1 diamonds break more easily?

No, unless they have large surface-reaching feathers.

The Bottom Line

Choose an eye-clean SI1 to save, or VS1 for extra confidence and step cuts. Always prioritize cut quality.

Related Guides

• VVS vs VS clarity
• VS1 vs VS2
• The 4Cs explained

Author Bio

Aumsri Pradhan

Founder, Ivevar Luxury

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Aumsri Pradhan is the founder of Ivevar Luxury, a Surat-based fine jewelry brand that designs and handcrafts lab grown diamond and moissanite jewelry in its own workshop. She leads the brand's design and customer experience, from engagement rings and bridal sets to custom pieces made to each client's story. Through the Ivevar blog, she shares practical guidance on lab grown diamonds, moissanite, diamond grading and ring design to help buyers choose with confidence.

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