Radiant|Lab Grown|IGI

1.55ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG614322823

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG614322823

Diamond specifications and retailer prices

From €676 EUR

£595 GBP

As of October 29, 2026

12 retailers carry this diamond

Most expensive: €1,110 EUR at Brilliant Earth · As of October 17, 2026

View at Brilliant Earth

About this 1.55ct lab-grown radiant diamond

This 1.55ct lab-grown radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG614322823 or 614322823. Listed at 12 retailers as of October 29, 2026. 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

Colour

SI1

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle43.8°

Pavilion angle35.4°

OriginLab Grown

Grading LabIGI

CertificateIGI LG614322823

Dimensions8.05 × 5.74 × 3.90 mm

L/W Ratio1.40

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 LG614322823

Side View

Caratlytics Score

How it works →

Good

Decent quality, room for better deals

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Price History

Last verified: Oct 29

Current: €1,110 EUR|Low: €155 EUR|High: €1,190 EUR|Avg: €472 EUR|-6.8%

Brilliant Earth

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

October 17, 2026

Retailer 12€155 EUR

Retailer 4€180 EUR

Retailer 7€192 EUR

Retailer 10€192 EUR

Retailer 8€249 EUR

Retailer 9€335 EUR

Retailer 3€344 EUR

Retailer 2€365 EUR

Retailer 6€416 EUR

Retailer 5€494 EUR

Retailer 14€591 EUR

Retailer 13€619 EUR

Retailer 11€911 EUR

Brilliant Earth€1,110 EUR

25 data points across 14 retailers

12 retailers

Retailer 1

€155 EUR

$173 USD

Price last confirmed 22 days ago

Retailer 2

€180 EUR

$201 USD

View

Price last confirmed 33 days ago

Retailer 3

€192 EUR

$215 USD

View

Price last confirmed 14 days ago

Retailer 4

€192 EUR

$215 USD

View

Price last confirmed 15 days ago

Retailer 5

€249 EUR

£219 GBP

View

Price last confirmed 14 days ago

Retailer 6

€335 EUR

£295 GBP

View

Price last confirmed 14 days ago

Retailer 7

€344 EUR

$384 USD

View

Price last confirmed 14 days ago

Retailer 8

€591 EUR

$660 USD

View

Price last confirmed 17 days ago

Retailer 9

€619 EUR

$691 USD

View

Price last confirmed 22 days ago

Retailer 10

€676 EUR

£595 GBP

View

Retailer 11

€911 EUR

£801 GBP

View

Price last confirmed 19 days ago

Most Expensive

Brilliant Earth

8851381A · Oct 17

€1,110 EUR

$1,240 USD

View

Price last confirmed 13 days ago

11 more retailers have this diamond

Prices start from €676 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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