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Cushion|Lab Grown|IGI

3.23ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG629454997

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG629454997

Diamond specifications and retailer prices

From $836 NZD
$471 USD
As of October 31, 2026
Save $5,445 NZD (87%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,281 NZD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.23ct lab-grown cushion diamond

This 3.23ct 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 LG629454997 or 629454997. Listed at 12 retailers as of October 31, 2026, with prices from $836 to $6,281, a $5,445 spread on the same certified stone. Brilliant Earth lists it at $6,281. 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

3.23
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.4°
Pavilion angle38.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG629454997
Dimensions8.63 × 8.39 × 5.65 mm
L/W Ratio1.03
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.63 mm8.39 mm3.23 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG629454997
Side View
Table 63.0%Crown 38.4°Girdle: STK-THKPavilion 38.4°Culet: NoneDepth 67.3%

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 31
Current: $6,281 NZD|Low: $836 NZD|High: $8,996 NZD|Avg: $2,196 NZD|-30.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 4$836 NZD
Retailer 3$924 NZD
Retailer 6$1,136 NZD
Retailer 11$1,388 NZD
Retailer 10$1,428 NZD
Retailer 5$1,438 NZD
Retailer 2$1,544 NZD
Retailer 7$2,214 NZD
Retailer 12$2,880 NZD
Retailer 9$3,020 NZD
Retailer 8$3,441 NZD
Brilliant Earth$6,281 NZD

43 data points across 12 retailers

12 retailers$836 NZD to $6,281 NZD

A
Cheapest Retailer
-
$836 NZD
$471 USD
Final sale: no returns
A
Retailer 2
-
$924 NZD
$521 USD
View
A
Retailer 3
-
$1,136 NZD
$640 USD
View
B+
Retailer 4
-
$1,388 NZD
$782 USD
View
A
Retailer 5
-
$1,428 NZD
$805 USD
View
A
Retailer 6
-
$1,438 NZD
£638 GBP
View
A
Retailer 7
-
$1,544 NZD
€829 EUR
View
B+
Retailer 8
-
$2,214 NZD
$1,248 USD
View
B+
Retailer 9
-
$2,880 NZD
$1,623 USD
View
B+
Retailer 10
-
$3,020 NZD
$1,702 USD
View
B+
Retailer 11
-
$3,441 NZD
£1,527 GBP
View
Most Expensive
B
Brilliant Earth
14069332A · Oct 31
$6,281 NZD
$3,540 USD
View
11 more retailers have this diamond
Prices start from $836 NZDSave up to $5,445 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
3.23ct Cushion
$836 NZD