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Cushion|Lab Grown|GIA

3.28ct E SI1 Cushion Lab Grown Diamond

EX • E/SI1

Diamond specifications and retailer prices

From HK$34,220 HKD
CA$6,058 CAD
As of October 30, 2026
2 retailers carry this diamond
Most expensive: HK$34,220 HKD at Diamond Exchange Canada
View at Diamond Exchange Canada

About this 3.28ct lab-grown cushion diamond

This 3.28ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 2 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
Dimensions9.31 × 8.29 × 5.48 mm
L/W Ratio1.12
Top View
9.31 mm8.29 mm3.28 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA
Side View
Table 63.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 66.1%

Caratlytics Score

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C
Average
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Price History

Last verified: Oct 30
Current: HK$34,220 HKD|Low: HK$8,662 HKD|High: HK$34,220 HKD|Avg: HK$18,960 HKD
Diamond Exchange Canada
Retailer 2
Retailer 3
October 16, 2026
Retailer 2HK$9,242 HKD
Retailer 3HK$12,422 HKD
Diamond Exchange CanadaHK$34,220 HKD

28 data points across 3 retailers

2 retailers

Retailer 1
-
HK$12,422 HKD
£1,247 GBP
Price last confirmed 14 days ago
Most Expensive
C
Diamond Exchange Canada
1986529458 · Oct 30
HK$34,220 HKD
CA$6,058 CAD
View
1 more retailer has 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 Cushion
HK$34,220 HKD