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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 $671 AUD
$471 USD
As of October 29, 2026
Save $4,369 AUD (87%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $5,040 AUD at Brilliant Earth · As of October 30, 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 29, 2026, with prices from $671 to $5,040, a $4,369 spread on the same certified stone. Brilliant Earth lists it at $5,040. 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

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 29
Current: $5,040 AUD|Low: $671 AUD|High: $7,218 AUD|Avg: $1,759 AUD|-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$671 AUD
Retailer 3$742 AUD
Retailer 5$911 AUD
Retailer 11$1,113 AUD
Retailer 10$1,146 AUD
Retailer 2$1,154 AUD
Retailer 7$1,248 AUD
Retailer 6$1,777 AUD
Retailer 12$2,310 AUD
Retailer 9$2,423 AUD
Retailer 8$2,761 AUD
Brilliant Earth$5,040 AUD

44 data points across 12 retailers

12 retailers$671 AUD to $5,040 AUD

A
Cheapest Retailer
-
$671 AUD
$471 USD
Final sale: no returns
A
Retailer 2
-
$742 AUD
$521 USD
View
A
Retailer 3
-
$911 AUD
$640 USD
View
B+
Retailer 4
-
$1,113 AUD
$782 USD
View
A
Retailer 5
-
$1,146 AUD
$805 USD
View
A
Retailer 6
-
$1,154 AUD
£638 GBP
View
A
Retailer 7
-
$1,248 AUD
€835 EUR
View
B+
Retailer 8
-
$1,777 AUD
$1,248 USD
View
B+
Retailer 9
-
$2,310 AUD
$1,623 USD
View
B+
Retailer 10
-
$2,423 AUD
$1,702 USD
View
B+
Retailer 11
-
$2,761 AUD
£1,527 GBP
View
Most Expensive
B
Brilliant Earth
14069332A · Oct 30
$5,040 AUD
$3,540 USD
View
11 more retailers have this diamond
Prices start from $671 AUDSave up to $4,369 AUD

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
$671 AUD