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Cushion|Lab Grown|IGI

3.51ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG749583773

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG749583773

Diamond specifications and retailer prices

From HK$21,795 HKD
$2,778 USD
As of October 29, 2026
Save HK$51,065 HKD (70%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: HK$72,861 HKD at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 3.51ct lab-grown cushion diamond

This 3.51ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG749583773 or 749583773. Listed at 22 retailers as of October 29, 2026, with prices from HK$21,795 to HK$72,861, a HK$51,065 spread on the same certified stone. Taylor and Hart lists it at HK$72,861. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.51
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.6°
Pavilion angle31.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG749583773
Dimensions8.52 × 8.11 × 5.37 mm
L/W Ratio1.05
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.52 mm8.11 mm3.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG749583773
Side View
Table 64.0%Crown 38.6°Girdle: THK-VTKPavilion 31.4°Culet: NoneDepth 66.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: HK$57,352 HKD|Low: HK$14,397 HKD|High: HK$76,417 HKD|Avg: HK$38,788 HKD|+2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
October 30, 2026
Retailer 4HK$20,862 HKD
Retailer 6HK$21,795 HKD
Retailer 14HK$22,007 HKD
Retailer 2HK$22,164 HKD
Retailer 8HK$28,719 HKD
Retailer 12HK$29,814 HKD
Retailer 15HK$29,829 HKD
Retailer 10HK$33,265 HKD
Retailer 7HK$39,577 HKD
Retailer 13HK$47,177 HKD
Retailer 9HK$48,437 HKD
Retailer 3HK$52,919 HKD
Retailer 11HK$56,895 HKD
Retailer 1HK$57,352 HKD
Retailer 5HK$69,815 HKD

45 data points across 15 retailers

22 retailersHK$21,795 HKD to HK$72,861 HKD

Retailer 1
-
HK$20,862 HKD
$2,659 USD
Price last confirmed 19 days ago
A
Retailer 2
-
HK$21,795 HKD
$2,778 USD
View
A
Retailer 3
-
HK$22,007 HKD
$2,805 USD
View
Final sale: no returns
A
Retailer 4
-
HK$22,164 HKD
$2,825 USD
View
A
Retailer 5
-
HK$24,102 HKD
View
A
Retailer 6
-
HK$28,719 HKD
£2,882 GBP
View
A
Retailer 7
-
HK$29,814 HKD
$3,800 USD
View
A
Retailer 8
-
HK$29,829 HKD
$3,802 USD
View
A
Retailer 9
-
HK$33,265 HKD
€4,038 EUR
View
A
Retailer 10
-
HK$35,345 HKD
$4,505 USD
View
B+
Retailer 11
-
HK$39,577 HKD
£3,972 GBP
View
Retailer 12
-
HK$47,177 HKD
A$9,251 AUD
View
Price last confirmed 8 days ago
B+
Retailer 13
-
HK$48,437 HKD
ZAR 99,736 ZAR
View
B+
Retailer 14
-
HK$51,782 HKD
$6,600 USD
View
B+
Retailer 15
-
HK$52,919 HKD
$6,745 USD
View
B+
Retailer 16
-
HK$55,689 HKD
$7,098 USD
View
B+
Retailer 17
-
HK$56,895 HKD
£5,710 GBP
View
B
Retailer 18
-
HK$57,352 HKD
$7,310 USD
View
B+
Retailer 19
-
HK$58,286 HKD
$7,429 USD
View
B
Retailer 20
-
HK$61,738 HKD
$7,869 USD
View
B
Retailer 21
-
HK$69,815 HKD
SGD 12,025 SGD
View
Most Expensive
B
Taylor and Hart
7ST2ONS · Oct 30
HK$72,861 HKD
$9,287 USD
View
21 more retailers have this diamond
Prices start from HK$21,795 HKDSave up to HK$51,065 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
3.51ct Cushion
HK$21,795 HKD