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Cushion|Lab Grown|IGI

3.03ct E SI1 Cushion Lab Grown Diamond

VG • E/SI1 • IGI LG840612390

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG840612390

Diamond specifications and retailer prices

From $674 AUD
HK$3,700 HKD
As of October 31, 2026
Save $2,999 AUD (82%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $3,673 AUD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 3.03ct lab-grown cushion diamond

This 3.03ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG840612390 or 840612390. Listed at 10 retailers as of October 29, 2026, with prices from $674 to $3,673, a $2,999 spread on the same certified stone. Brilliant Earth lists it at $3,673. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

3.03
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle30.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840612390
Dimensions10.37 × 7.37 × 4.65 mm
L/W Ratio1.41
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.37 mm7.37 mm3.03 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840612390
Side View
Table 57.0%Crown 35.2°Girdle: MED-STKPavilion 30.4°Culet: NoneDepth 63.1%

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: Oct 31
Current: $939 AUD|Low: $554 AUD|High: $2,833 AUD|Avg: $1,184 AUD|-0.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 10$554 AUD
Retailer 5$674 AUD
Retailer 7$756 AUD
Retailer 9$932 AUD
Retailer 1$939 AUD
Retailer 8$989 AUD
Retailer 4$1,098 AUD
Retailer 2$1,418 AUD
Retailer 3$1,499 AUD
Retailer 6$2,804 AUD

24 data points across 10 retailers

10 retailers$674 AUD to $3,673 AUD

A
Cheapest Retailer
-
$674 AUD
HK$3,700 HKD
Retailer 2
-
$756 AUD
£418 GBP
View
Price last confirmed 14 days ago
B+
Retailer 3
-
$932 AUD
$655 USD
View
A
Retailer 4
-
$939 AUD
€628 EUR
View
B
Retailer 5
-
$989 AUD
$695 USD
View
A
Retailer 6
-
$1,098 AUD
£607 GBP
View
B+
Retailer 7
-
$1,418 AUD
$996 USD
View
B+
Retailer 8
-
$1,499 AUD
$1,053 USD
View
B
Retailer 9
-
$2,804 AUD
$1,970 USD
View
Most Expensive
B
Brilliant Earth
21823147A · Oct 29
$3,673 AUD
$2,580 USD
View
9 more retailers have this diamond
Prices start from $674 AUDSave up to $2,999 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
3.03ct Cushion
$674 AUD