Round|Lab Grown|IGI

1.55ct I SI1 Round Lab Grown Diamond

ID • I/SI1 • IGI LG492122410

Shape and cutting style on the report: Round brilliant

Certificate IGI LG492122410

Diamond specifications and retailer prices

From €770 EUR

$860 USD

As of October 31, 2026

Save €3,432 EUR (82%) vs most expensive(unlock to see where)

12 retailers carry this diamond

Most expensive: €4,201 EUR at MOH London · As of October 29, 2026

View at MOH London

About this 1.55ct lab-grown round diamond

This 1.55ct lab-grown round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG492122410 or 492122410. Listed at 12 retailers as of October 29, 2026, with prices from €770 to €4,201, a €3,432 spread on the same certified stone. MOH London lists it at €4,201. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.55

Carat

Color

SI1

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle34.1°

Pavilion angle40.8°

OriginLab Grown

Grading LabIGI

CertificateIGI LG492122410

Dimensions7.47 × 7.41 × 4.53 mm

L/W Ratio1.01

Girdle conditionFaceted

Culet sizePointed

Cert comments

This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG492122410

Side View

Caratlytics Score

How it works →

Excellent

Excellent quality and great value

Unlock full score analysis

See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31

Current: €4,201 EUR|Low: €770 EUR|High: €4,234 EUR|Avg: €1,974 EUR|+0.5%

MOH London

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

Retailer 13

Retailer 14

November 1, 2026

Retailer 7€770 EUR

Retailer 8€1,261 EUR

Retailer 12€1,372 EUR

Retailer 11€1,412 EUR

Retailer 9€1,463 EUR

Retailer 14€1,463 EUR

Retailer 3€1,616 EUR

Retailer 6€1,674 EUR

Retailer 5€1,997 EUR

Retailer 10€2,308 EUR

Retailer 2€2,646 EUR

Retailer 4€2,656 EUR

Retailer 13€2,743 EUR

MOH London€4,201 EUR

37 data points across 14 retailers

12 retailers€770 EUR to €4,201 EUR

Cheapest Retailer

€770 EUR

$860 USD

B+

Retailer 2

€1,261 EUR

$1,409 USD

View

B+

Retailer 3

€1,372 EUR

$1,533 USD

View

B+

Retailer 4

€1,412 EUR

$1,578 USD

View

Final sale: no returns

B+

Retailer 5

€1,463 EUR

$1,635 USD

View

Retailer 6

€1,463 EUR

$1,635 USD

View

Price last confirmed 19 days ago

B+

Retailer 7

€1,616 EUR

$1,805 USD

View

Retailer 8

€2,308 EUR

$2,579 USD

View

Retailer 9

€2,646 EUR

£2,328 GBP

View

Retailer 10

€2,656 EUR

$2,967 USD

View

Retailer 11

€2,743 EUR

$3,064 USD

View

Most Expensive

MOH London

LG492122410 · Oct 29

€4,201 EUR

£3,696 GBP

View

11 more retailers have this diamond

Prices start from €770 EURSave up to €3,432 EUR

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

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