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Round|Lab Grown|IGI

3.28ct G SI1 Round Lab Grown Diamond

ID • G/SI1

Diamond specifications and retailer prices

From £1,914 GBP
CA$3,562 CAD
As of October 30, 2026
3 retailers carry this diamond
Most expensive: £1,914 GBP at Diamond Exchange Canada
View at Diamond Exchange Canada

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. Listed at 3 retailers as of October 30, 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
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions9.63 × 9.60 × 5.86 mm
L/W Ratio1.00
Top View
9.63 mm9.60 mm3.28 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 56.5%CrownGirdle: MED-STKPavilionCulet: NoneDepth 60.9%

Caratlytics Score

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C
Average
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Price History

Last verified: Oct 30
Current: £1,914 GBP|Low: £284 GBP|High: £1,914 GBP|Avg: £739 GBP
Diamond Exchange Canada
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 10, 2026
Retailer 3£304 GBP
Retailer 8£340 GBP
Retailer 2£376 GBP
Retailer 5£376 GBP
Retailer 6£499 GBP
Retailer 4£656 GBP
Retailer 7£1,335 GBP
Diamond Exchange Canada£1,914 GBP

22 data points across 8 retailers

3 retailers

Retailer 1
-
£340 GBP
$455 USD
Price last confirmed 18 days ago
Retailer 2
-
£656 GBP
View
Price last confirmed 23 days ago
Most Expensive
C
Diamond Exchange Canada
1986529451 · Oct 30
£1,914 GBP
CA$3,562 CAD
View
2 more retailers have this diamond

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.

C
3.28ct Round
£1,914 GBP