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Cushion|Lab Grown|IGI

3.18ct E VVS1 Cushion Lab Grown Diamond

EX • E/VVS1 • IGI LG790626874

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG790626874

Diamond specifications and retailer prices

From $1,665 NZD
$935 USD
As of October 25, 2026
Save $12,829 NZD (89%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $14,493 NZD at Brilliant Earth · As of October 24, 2026
View at Brilliant Earth

About this 3.18ct lab-grown cushion diamond

This 3.18ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG790626874 or 790626874. Listed at 19 retailers as of October 24, 2026, with prices from $1,665 to $14,493, a $12,829 spread on the same certified stone. Brilliant Earth lists it at $14,493. 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

3.18
Carat
E
Colour
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle28.2°
Pavilion angle37.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG790626874
Dimensions10.22 × 8.15 × 5.16 mm
L/W Ratio1.25
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
10.22 mm8.15 mm3.18 ctE / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG790626874
Side View
Table 62.0%Crown 28.2°Girdle: MED-STKPavilion 37.1°Culet: NoneDepth 63.3%

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 25
Current: $14,493 NZD|Low: $1,298 NZD|High: $14,938 NZD|Avg: $4,341 NZD|-3.0%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
October 25, 2026
Retailer 7$1,298 NZD
Retailer 16$1,569 NZD
Retailer 18$1,665 NZD
Retailer 4$2,033 NZD
Retailer 13$2,127 NZD
Retailer 2$2,185 NZD
Retailer 8$2,199 NZD
Retailer 17$3,057 NZD
Retailer 15$3,059 NZD
Retailer 14$3,097 NZD
Retailer 5$3,476 NZD
Retailer 3$4,179 NZD
Retailer 9$4,535 NZD
Retailer 19$4,592 NZD
Retailer 6$4,646 NZD
Retailer 12$5,680 NZD
Retailer 10$6,314 NZD
Retailer 11$7,558 NZD
Brilliant Earth$14,493 NZD

34 data points across 19 retailers

19 retailers$1,665 NZD to $14,493 NZD

Retailer 1
-
$1,569 NZD
£694 GBP
Price last confirmed 11 days ago
A
Retailer 2
-
$1,665 NZD
$935 USD
View
A
Retailer 3
-
$2,033 NZD
$1,142 USD
View
A
Retailer 4
-
$2,127 NZD
£941 GBP
View
A
Retailer 5
-
$2,185 NZD
€1,169 EUR
View
Retailer 6
-
$2,199 NZD
$1,235 USD
View
Price last confirmed 9 days ago
Retailer 7
-
$3,057 NZD
$1,717 USD
View
Price last confirmed 7 days ago
Retailer 8
-
$3,059 NZD
A$2,643 AUD
View
Price last confirmed 9 days ago
A
Retailer 9
-
$3,097 NZD
ZAR 28,103 ZAR
View
A
Retailer 10
-
$3,476 NZD
$1,952 USD
View
B+
Retailer 11
-
$4,179 NZD
£1,848 GBP
View
B+
Retailer 12
-
$4,346 NZD
$2,441 USD
View
B+
Retailer 13
-
$4,535 NZD
SGD 3,442 SGD
View
B+
Retailer 14
-
$4,592 NZD
$2,579 USD
View
B+
Retailer 15
-
$4,646 NZD
$2,609 USD
View
B+
Retailer 16
-
$5,680 NZD
£2,512 GBP
View
Retailer 17
-
$6,314 NZD
A$5,456 AUD
View
Price last confirmed 22 days ago
Retailer 18
-
$7,558 NZD
$4,245 USD
View
Price last confirmed 25 days ago
Most Expensive
B
Brilliant Earth
18673139A · Oct 24
$14,493 NZD
$8,140 USD
View
18 more retailers have this diamond
Prices start from $1,665 NZDSave up to $12,829 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
3.18ct Cushion
$1,665 NZD