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Round|Lab Grown|IGI

3.28ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG474140280

Shape and cutting style on the report: Round brilliant

Certificate IGI LG474140280

Diamond specifications and retailer prices

From $4,020 USD
As of October 29, 2026
12 retailers carry this diamond
Most expensive: $18,222 USD at MOH London · As of October 29, 2026
View at MOH London

About this 3.28ct lab-grown round diamond

This 3.28ct 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 LG474140280 or 474140280. 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

3.28
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG474140280
Dimensions9.56 × 9.50 × 5.82 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
Top View
9.56 mm9.50 mm3.28 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG474140280
Side View
Table 58.0%Crown 36°Girdle: MediumPavilion 40.2°Culet: NoneDepth 61.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 29
Current: $18,222 USD|Low: $4,020 USD|High: $26,032 USD|Avg: $12,247 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 5$4,020 USD
Retailer 4$8,582 USD
Retailer 8$9,611 USD
Retailer 6$9,955 USD
Retailer 9$9,955 USD
Retailer 3$11,074 USD
Retailer 7$11,518 USD
Retailer 2$11,922 USD
MOH London$18,222 USD
Retailer 10$26,032 USD

40 data points across 10 retailers

12 retailers

B
Cheapest Retailer
-
$4,020 USD
Most Expensive
B
MOH London
LG474140280 · Oct 29
$18,222 USD
£14,348 GBP
View
Price under review
1 more retailer has this diamond
Prices start from $4,020 USD

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
3.28ct Round
$4,020 USD