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Cushion|Lab Grown|IGI

3.28ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG544280736

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG544280736

Diamond specifications and retailer prices

From €416 EUR
$465 USD
As of October 31, 2026
Save €2,806 EUR (87%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €3,222 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.28ct lab-grown cushion diamond

This 3.28ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG544280736 or 544280736. Listed at 13 retailers as of October 31, 2026, with prices from €416 to €3,222, a €2,806 spread on the same certified stone. Brilliant Earth lists it at €3,222. 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
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle37.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG544280736
Dimensions8.62 × 8.35 × 5.43 mm
L/W Ratio1.03
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
8.62 mm8.35 mm3.28 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG544280736
Side View
Table 65.0%Crown 36.3°Girdle: MED-VTKPavilion 37.3°Culet: NoneDepth 65.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: €3,222 EUR|Low: €223 EUR|High: €4,744 EUR|Avg: €1,216 EUR|-30.0%
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
October 31, 2026
Retailer 12€416 EUR
Retailer 8€461 EUR
Retailer 4€504 EUR
Retailer 10€698 EUR
Retailer 7€728 EUR
Retailer 6€759 EUR
Retailer 2€802 EUR
Retailer 5€1,468 EUR
Retailer 3€1,512 EUR
Retailer 11€1,572 EUR
Retailer 13€1,683 EUR
Retailer 9€1,695 EUR
Brilliant Earth€3,222 EUR

38 data points across 13 retailers

13 retailers€416 EUR to €3,222 EUR

A
Cheapest Retailer
-
€416 EUR
$465 USD
Final sale: no returns
A
Retailer 2
-
€461 EUR
$515 USD
View
A
Retailer 3
-
€504 EUR
HK$4,400 HKD
View
A
Retailer 4
-
€698 EUR
$780 USD
View
B+
Retailer 5
-
€728 EUR
$813 USD
View
A
Retailer 6
-
€759 EUR
£667 GBP
View
A
Retailer 7
-
€802 EUR
View
B+
Retailer 8
-
€1,468 EUR
SGD 2,216 SGD
View
B+
Retailer 9
-
€1,512 EUR
$1,689 USD
View
B+
Retailer 10
-
€1,572 EUR
$1,756 USD
View
B+
Retailer 11
-
€1,683 EUR
$1,880 USD
View
B+
Retailer 12
-
€1,695 EUR
£1,491 GBP
View
Most Expensive
B
Brilliant Earth
16422264A · Oct 31
€3,222 EUR
$3,600 USD
View
12 more retailers have this diamond
Prices start from €416 EURSave up to €2,806 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.

A
3.28ct Cushion
€416 EUR