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Cushion|Lab Grown|IGI

3.03ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG579395083

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG579395083

Diamond specifications and retailer prices

From $554 USD
As of November 1, 2026
Save $4,196 USD (88%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,750 USD at Brilliant Earth · As of October 31, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG579395083 or 579395083. Listed at 12 retailers as of October 31, 2026, with prices from $554 to $4,750, a $4,196 spread on the same certified stone. Brilliant Earth lists it at $4,750. 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

3.03
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.2°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG579395083
Dimensions8.36 × 8.31 × 5.51 mm
L/W Ratio1.01
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
8.36 mm8.31 mm3.03 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG579395083
Side View
Table 64.0%Crown 41.2°Girdle: MED-STKPavilion 38.2°Culet: NoneDepth 66.3%

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: Nov 1
Current: $4,750 USD|Low: $554 USD|High: $4,910 USD|Avg: $1,524 USD|-3.3%
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 1, 2026
Retailer 4$554 USD
Retailer 11$613 USD
Retailer 7$660 USD
Retailer 9$822 USD
Retailer 12$907 USD
Retailer 6$919 USD
Retailer 5$1,020 USD
Retailer 10$1,383 USD
Retailer 3$1,549 USD
Retailer 8$1,970 USD
Retailer 2$2,560 USD
Brilliant Earth$4,750 USD

41 data points across 12 retailers

12 retailers$554 USD to $4,750 USD

A
Cheapest Retailer
-
$554 USD
Final sale: no returns
Retailer 2
-
$613 USD
View
Price last confirmed 16 days ago
A
Retailer 3
-
$660 USD
View
B+
Retailer 4
-
$822 USD
View
A
Retailer 5
-
$907 USD
View
A
Retailer 6
-
$919 USD
€875 EUR
View
A
Retailer 7
-
$1,020 USD
£803 GBP
View
B+
Retailer 8
-
$1,383 USD
View
B+
Retailer 9
-
$1,549 USD
View
B+
Retailer 10
-
$1,970 USD
View
B
Retailer 11
-
$2,560 USD
£2,016 GBP
View
Most Expensive
B
Brilliant Earth
16211350A · Oct 31
$4,750 USD
View
11 more retailers have this diamond
Prices start from $554 USDSave up to $4,196 USD

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
$554 USD