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Colorless SI Diamonds

Colorless SI lab-grown diamonds. SI clarity is eye-clean and offers the best value. A dependable quality tier that reads bright and clean to the eye.

Every stone is independently certified by IGI or GIA, hand-inspected in Sweden before dispatch, and shipped fully insured with free delivery and 30-day returns.

IGI/GIA certified · Inspected in Sweden · Free insured shipping

243 diamonds
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0.6ct Pear Lab Grown Diamond — F SI1 PearLab grown 0.61 ct F SI1 Excellent IGI €350 0.6ct Pear Lab Grown Diamond — E SI1 PearLab grown 0.62 ct E SI1 Excellent IGI €360 0.5ct Pear Lab Grown Diamond — E SI1 PearLab grown 0.5 ct E SI1 Excellent IGI €350 0.5ct Pear Lab Grown Diamond — D SI1 PearLab grown 0.54 ct D SI1 Excellent IGI €340 0.4ct Pear Lab Grown Diamond — E SI1 PearLab grown 0.42 ct E SI1 Excellent IGI €310 3ct Emerald Lab Grown Diamond — E SI1 EmeraldLab grown 3 ct E SI1 Excellent GIA €1.100 2ct Emerald Lab Grown Diamond — E SI1 EmeraldLab grown 2 ct E SI1 Excellent GIA €910 1.5ct Emerald Lab Grown Diamond — E SI1 EmeraldLab grown 1.52 ct E SI1 Excellent GIA €640 1.2ct Emerald Lab Grown Diamond — F SI1 EmeraldLab grown 1.21 ct F SI1 Excellent IGI €430 1.2ct Emerald Lab Grown Diamond — D SI1 EmeraldLab grown 1.34 ct D SI1 Excellent GIA €710 1ct Emerald Lab Grown Diamond — E SI1 EmeraldLab grown 1.01 ct E SI1 VG GIA €530 1ct Emerald Lab Grown Diamond — D SI1 EmeraldLab grown 1 ct D SI1 Excellent IGI €350 0.9ct Emerald Lab Grown Diamond — E SI1 EmeraldLab grown 0.9 ct E SI1 Excellent IGI €400 0.8ct Emerald Lab Grown Diamond — D SI1 EmeraldLab grown 0.84 ct D SI1 Excellent IGI €410 0.7ct Emerald Lab Grown Diamond — F SI1 EmeraldLab grown 0.7 ct F SI1 Excellent IGI €320 0.7ct Emerald Lab Grown Diamond — D SI1 EmeraldLab grown 0.71 ct D SI1 Excellent GIA €390 0.6ct Emerald Lab Grown Diamond — F SI1 EmeraldLab grown 0.6 ct F SI1 Excellent IGI €370 0.6ct Emerald Lab Grown Diamond — E SI1 EmeraldLab grown 0.61 ct E SI1 Excellent IGI €340 0.5ct Emerald Lab Grown Diamond — F SI1 EmeraldLab grown 0.5 ct F SI1 Excellent IGI €350 0.5ct Emerald Lab Grown Diamond — D SI1 EmeraldLab grown 0.52 ct D SI1 Excellent GIA €350 0.4ct Emerald Lab Grown Diamond — F SI1 EmeraldLab grown 0.35 ct F SI1 Excellent IGI €305 0.4ct Emerald Lab Grown Diamond — D SI1 EmeraldLab grown 0.44 ct D SI1 Excellent IGI €290 3ct Radiant Lab Grown Diamond — E SI1 RadiantLab grown 3.01 ct E SI1 Excellent IGI €650 3ct Radiant Lab Grown Diamond — F SI1 RadiantLab grown 3.02 ct F SI1 Excellent GIA €1.310 2ct Radiant Lab Grown Diamond — F SI1 RadiantLab grown 2.07 ct F SI1 ID GIA €870 2ct Radiant Lab Grown Diamond — E SI1 RadiantLab grown 2.02 ct E SI1 Excellent GIA €1.050 1.5ct Radiant Lab Grown Diamond — F SI1 RadiantLab grown 1.59 ct F SI1 EX GIA €620 1.5ct Radiant Lab Grown Diamond — E SI1 RadiantLab grown 1.5 ct E SI1 Excellent IGI €380 1.2ct Radiant Lab Grown Diamond — F SI1 RadiantLab grown 1.2 ct F SI1 Excellent IGI €380 1.2ct Radiant Lab Grown Diamond — E SI1 RadiantLab grown 1.2 ct E SI1 Excellent IGI €470 1.2ct Radiant Lab Grown Diamond — D SI1 RadiantLab grown 1.21 ct D SI1 Excellent IGI €370 1ct Radiant Lab Grown Diamond — F SI1 RadiantLab grown 1 ct F SI1 Excellent GIA €530 1ct Radiant Lab Grown Diamond — E SI1 RadiantLab grown 1 ct E SI1 Excellent IGI €370 0.9ct Radiant Lab Grown Diamond — E SI1 RadiantLab grown 0.92 ct E SI1 Excellent IGI €400 0.8ct Radiant Lab Grown Diamond — F SI1 RadiantLab grown 0.83 ct F SI1 Excellent IGI €360 0.7ct Radiant Lab Grown Diamond — F SI1 RadiantLab grown 0.72 ct F SI1 Excellent IGI €350 0.7ct Radiant Lab Grown Diamond — E SI1 RadiantLab grown 0.7 ct E SI1 Excellent IGI €360 0.6ct Radiant Lab Grown Diamond — F SI1 RadiantLab grown 0.61 ct F SI1 Excellent IGI €310 0.5ct Radiant Lab Grown Diamond — E SI1 RadiantLab grown 0.52 ct E SI1 Excellent IGI €320 0.4ct Radiant Lab Grown Diamond — F SI1 RadiantLab grown 0.45 ct F SI1 Excellent IGI €330 0.4ct Radiant Lab Grown Diamond — D SI1 RadiantLab grown 0.43 ct D SI1 Excellent IGI €290 3ct Oval Lab Grown Diamond — E SI1 OvalLab grown 3 ct E SI1 Excellent IGI €650 2ct Oval Lab Grown Diamond — D SI1 OvalLab grown 2.01 ct D SI1 Excellent GIA €970 1.5ct Oval Lab Grown Diamond — E SI1 OvalLab grown 1.52 ct E SI1 EX GIA €680 1ct Oval Lab Grown Diamond — D SI1 OvalLab grown 1.06 ct D SI1 Excellent GIA €570 0.6ct Oval Lab Grown Diamond — D SI1 OvalLab grown 0.66 ct D SI1 Excellent IGI €360 0.5ct Oval Lab Grown Diamond — E SI1 OvalLab grown 0.5 ct E SI1 Excellent IGI €350 0.4ct Oval Lab Grown Diamond — D SI1 OvalLab grown 0.4 ct D SI1 Excellent IGI €280 1.5ct Round Lab Grown Diamond — D SI1 RoundLab grown 1.5 ct D SI1 EX GIA €740 3ct Round Lab Grown Diamond — F SI1 RoundLab grown 3.17 ct F SI1 EX GIA €1.100

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Colorless SI diamonds: what the grade means

SI clarity is eye-clean and offers the best value. This tier is chosen to look bright and clean to the eye while keeping excellent value — the sweet spot where a higher grade would cost more without a visible difference.

Every diamond here is lab-grown — a real diamond with the same carbon crystal structure, hardness and fire as a mined stone, created above ground in a matter of weeks rather than extracted over millennia. Because origin is the only difference, you typically pay 60–80% less than the mined equivalent for the same look, and every stone is conflict-free and traceable.

Why this quality tier

  • Eye-clean — no inclusions visible without magnification.
  • White face-up — no warmth to the naked eye, even set in white gold or platinum.
  • Better value — you spend on the grades that show, not the ones only a loupe reveals.

Each stone is independently certified by IGI or GIA, hand-inspected and photographed by our team in Sweden before dispatch, and shipped fully insured with free delivery and 30-day returns. Every diamond is one of a kind — the exact stone you see is the stone you receive, ready to wear loose or set into a ring with help from our gemologists.

Questions, answered

What colorless si diamonds do you offer?

Our colorless si diamonds selection features 243 certified lab-grown diamonds in stock right now, each independently graded by IGI or GIA and hand-inspected in Sweden before it ships.

Are lab-grown diamonds real diamonds?

Yes. A lab-grown diamond is a real diamond — chemically, physically and optically identical to a mined one. The only difference is origin: it is grown above ground in a matter of weeks instead of mined over millennia, typically 60–80% less than the mined equivalent.

How are your diamonds certified?

Every stone is independently graded by IGI or GIA and ships with its certificate. You can verify the report number directly on the lab's public website.

Are these diamonds conflict-free?

Yes. Because they are lab-grown, our diamonds are entirely conflict-free and traceable, with a far lower environmental footprint than mined stones.

Can I return a diamond or set it in a ring?

Yes. Every order includes free insured shipping and 30-day returns. Each stone is loose and ready to set — choose "Set this stone in a ring" on any product and our gemologists help you build the setting.

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“

The sparkle is incredible, and the whole experience felt professional from start to finish.

”
Sofia
★★★★★
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“

Loving this!

”
Rebecca
★★★★★
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“

We chose Vaalberg for our engagement ring, and we're so glad we did. The craftsmanship is outstanding, and the diamond sparkles beautifully.

”
Emily
★★★★★
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“

I was initially hesitant about buying a lab-grown diamond, but it exceeded all my expectations. The ring and the diamond is breathtaking.

”
Sandra
★★★★★
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