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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 HK$3,648 HKD
$465 USD
As of October 29, 2026
Save HK$24,596 HKD (87%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$28,245 HKD at Brilliant Earth · As of October 30, 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 29, 2026, with prices from HK$3,648 to HK$28,245, a HK$24,596 spread on the same certified stone. Brilliant Earth lists it at HK$28,245. 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
Colour
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 29
Current: HK$28,245 HKD|Low: HK$1,954 HKD|High: HK$41,582 HKD|Avg: HK$10,658 HKD|-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 12HK$3,648 HKD
Retailer 8HK$4,041 HKD
Retailer 4HK$4,419 HKD
Retailer 10HK$6,120 HKD
Retailer 6HK$6,379 HKD
Retailer 2HK$6,650 HKD
Retailer 7HK$7,076 HKD
Retailer 5HK$12,866 HKD
Retailer 3HK$13,253 HKD
Retailer 11HK$13,777 HKD
Retailer 13HK$14,752 HKD
Retailer 9HK$14,856 HKD
Brilliant EarthHK$28,245 HKD

38 data points across 13 retailers

13 retailersHK$3,648 HKD to HK$28,245 HKD

A
Cheapest Retailer
-
HK$3,648 HKD
$465 USD
Final sale: no returns
A
Retailer 2
-
HK$4,041 HKD
$515 USD
View
A
Retailer 3
-
HK$4,419 HKD
View
A
Retailer 4
-
HK$6,120 HKD
$780 USD
View
B+
Retailer 5
-
HK$6,379 HKD
$813 USD
View
A
Retailer 6
-
HK$6,650 HKD
£667 GBP
View
A
Retailer 7
-
HK$7,076 HKD
€859 EUR
View
B+
Retailer 8
-
HK$12,866 HKD
SGD 2,216 SGD
View
B+
Retailer 9
-
HK$13,253 HKD
$1,689 USD
View
B+
Retailer 10
-
HK$13,777 HKD
$1,756 USD
View
B+
Retailer 11
-
HK$14,752 HKD
$1,880 USD
View
B+
Retailer 12
-
HK$14,856 HKD
£1,491 GBP
View
Most Expensive
B
Brilliant Earth
16422264A · Oct 30
HK$28,245 HKD
$3,600 USD
View
12 more retailers have this diamond
Prices start from HK$3,648 HKDSave up to HK$24,596 HKD

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
HK$3,648 HKD