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Round|Lab Grown|IGI

3.23ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG621417191

Shape and cutting style on the report: Round brilliant

Certificate IGI LG621417191

Diamond specifications and retailer prices

From £1,966 GBP
$2,634 USD
As of October 26, 2026
Save £658 GBP (25%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £2,624 GBP at Diamond Exchange Canada · As of October 30, 2026
View at Diamond Exchange Canada

About this 3.23ct lab-grown round diamond

This 3.23ct lab-grown round sits in the three to five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG621417191 or 621417191. Listed at 3 retailers as of October 26, 2026, with prices from £1,966 to £2,624, a £658 spread on the same certified stone. Diamond Exchange Canada lists it at £2,624. 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

3.23
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG621417191
Dimensions9.48 × 9.48 × 5.82 mm
L/W Ratio1.00
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
Top View
9.48 mm9.48 mm3.23 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG621417191
Side View
Table 60.0%Crown 34.9°Girdle: MediumPavilion 41.2°Culet: NoneDepth 61.4%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 26
Current: £2,624 GBP|Low: £1,096 GBP|High: £7,463 GBP|Avg: £3,364 GBP|+17.5%
Diamond Exchange Canada
Retailer 2
Retailer 3
Retailer 4
August 27, 2026
Retailer 3£1,272 GBP
Retailer 2£1,966 GBP
Diamond Exchange Canada£2,624 GBP
Retailer 4£7,463 GBP

17 data points across 4 retailers

3 retailers£1,966 GBP to £2,624 GBP

B
Cheapest Retailer
-
£1,966 GBP
$2,634 USD
Most Expensive
C
Diamond Exchange Canada
1973047695 · Oct 30
£2,624 GBP
CA$4,883 CAD
View
1 more retailer has this diamond
Prices start from £1,966 GBPSave up to £658 GBP

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.

B
3.23ct Round
£1,966 GBP