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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 $4,929 NZD
$2,778 USD
As of October 30, 2026
Save $11,548 NZD (70%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $16,477 NZD 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 30, 2026, with prices from $4,929 to $16,477, a $11,548 spread on the same certified stone. Taylor and Hart lists it at $16,477. 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $6,495 NZD|Low: $3,256 NZD|High: $17,282 NZD|Avg: $8,789 NZD|+0.2%
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 31, 2026
Retailer 4$4,718 NZD
Retailer 6$4,929 NZD
Retailer 14$4,977 NZD
Retailer 2$5,012 NZD
Retailer 1$6,495 NZD
Retailer 12$6,742 NZD
Retailer 15$6,746 NZD
Retailer 10$7,523 NZD
Retailer 7$8,950 NZD
Retailer 13$10,669 NZD
Retailer 9$10,954 NZD
Retailer 3$11,968 NZD
Retailer 11$12,867 NZD
Retailer 8$12,970 NZD
Retailer 5$15,789 NZD

44 data points across 15 retailers

22 retailers$4,929 NZD to $16,477 NZD

Retailer 1
-
$4,718 NZD
$2,659 USD
Price last confirmed 21 days ago
A
Retailer 2
-
$4,929 NZD
$2,778 USD
View
A
Retailer 3
-
$4,977 NZD
$2,805 USD
View
Final sale: no returns
A
Retailer 4
-
$5,012 NZD
$2,825 USD
View
A
Retailer 5
-
$5,451 NZD
HK$24,000 HKD
View
A
Retailer 6
-
$6,495 NZD
£2,882 GBP
View
A
Retailer 7
-
$6,742 NZD
$3,800 USD
View
A
Retailer 8
-
$6,746 NZD
$3,802 USD
View
A
Retailer 9
-
$7,523 NZD
€4,038 EUR
View
A
Retailer 10
-
$7,993 NZD
$4,505 USD
View
B+
Retailer 11
-
$8,950 NZD
£3,972 GBP
View
Retailer 12
-
$10,669 NZD
A$9,251 AUD
View
Price last confirmed 9 days ago
B+
Retailer 13
-
$10,954 NZD
ZAR 99,736 ZAR
View
B+
Retailer 14
-
$11,710 NZD
$6,600 USD
View
B+
Retailer 15
-
$11,968 NZD
$6,745 USD
View
B+
Retailer 16
-
$12,594 NZD
$7,098 USD
View
B+
Retailer 17
-
$12,867 NZD
£5,710 GBP
View
B
Retailer 18
-
$12,970 NZD
$7,310 USD
View
B+
Retailer 19
-
$13,181 NZD
$7,429 USD
View
B
Retailer 20
-
$13,962 NZD
$7,869 USD
View
B
Retailer 21
-
$15,789 NZD
SGD 12,025 SGD
View
Most Expensive
B
Taylor and Hart
7ST2ONS · Oct 30
$16,477 NZD
$9,287 USD
View
21 more retailers have this diamond
Prices start from $4,929 NZDSave up to $11,548 NZD

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
$4,929 NZD