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Cushion|Lab Grown|IGI

3.01ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG628494271

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG628494271

Diamond specifications and retailer prices

From $1,026 AUD
As of November 5, 2026
Save $4,141 AUD (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $5,167 AUD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 3.01ct lab-grown cushion diamond

This 3.01ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG628494271 or 628494271. Listed at 11 retailers as of November 4, 2026, with prices from $1,026 to $5,167, a $4,141 spread on the same certified stone. Brilliant Earth lists it at $5,167. 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

3.01
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG628494271
Dimensions8.47 × 8.25 × 5.50 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
8.47 mm8.25 mm3.01 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG628494271
Side View
Table 63.0%Crown 36.4°Girdle: MED-STKPavilion 38.7°Culet: NoneDepth 66.7%

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: Nov 5
Current: $5,167 AUD|Low: $729 AUD|High: $5,574 AUD|Avg: $1,952 AUD|-7.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 9$729 AUD
Retailer 8$897 AUD
Retailer 10$1,026 AUD
Retailer 6$1,060 AUD
Retailer 3$1,154 AUD
Retailer 2$1,188 AUD
Retailer 11$1,278 AUD
Retailer 12$1,442 AUD
Retailer 5$2,842 AUD
Retailer 7$2,853 AUD
Retailer 4$3,451 AUD
Brilliant Earth$5,167 AUD

38 data points across 12 retailers

11 retailers$1,026 AUD to $5,167 AUD

Retailer 1
-
$729 AUD
Price last confirmed 13 days ago
A
Retailer 2
-
$1,026 AUD
View
A
Retailer 3
-
$1,060 AUD
View
B+
Retailer 4
-
$1,154 AUD
View
A
Retailer 5
-
$1,188 AUD
View
A
Retailer 6
-
$1,278 AUD
View
A
Retailer 7
-
$1,442 AUD
View
B
Retailer 8
-
$2,842 AUD
View
B
Retailer 9
-
$2,853 AUD
View
Retailer 10
-
$3,451 AUD
View
Price last confirmed 7 days ago
Most Expensive
B
Brilliant Earth
9869611A · Nov 4
$5,167 AUD
$3,550 USD
View
10 more retailers have this diamond
Prices start from $1,026 AUDSave up to $4,141 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
3.01ct Cushion
$1,026 AUD