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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 €496 EUR
$554 USD
As of October 31, 2026
Save €3,756 EUR (88%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €4,252 EUR 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 €496 to €4,252, a €3,756 spread on the same certified stone. Brilliant Earth lists it at €4,252. 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

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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: €4,252 EUR|Low: €496 EUR|High: €4,395 EUR|Avg: €1,364 EUR|-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€496 EUR
Retailer 11€549 EUR
Retailer 7€591 EUR
Retailer 9€736 EUR
Retailer 12€812 EUR
Retailer 5€822 EUR
Retailer 2€913 EUR
Retailer 10€1,238 EUR
Retailer 3€1,386 EUR
Retailer 8€1,763 EUR
Retailer 6€2,303 EUR
Brilliant Earth€4,252 EUR

41 data points across 12 retailers

12 retailers€496 EUR to €4,252 EUR

A
Cheapest Retailer
-
€496 EUR
$554 USD
Final sale: no returns
Retailer 2
-
€549 EUR
$613 USD
View
Price last confirmed 15 days ago
A
Retailer 3
-
€591 EUR
$660 USD
View
B+
Retailer 4
-
€736 EUR
$822 USD
View
A
Retailer 5
-
€812 EUR
$907 USD
View
A
Retailer 6
-
€822 EUR
View
A
Retailer 7
-
€913 EUR
£803 GBP
View
B+
Retailer 8
-
€1,238 EUR
$1,383 USD
View
B+
Retailer 9
-
€1,386 EUR
$1,549 USD
View
Retailer 10
-
€1,763 EUR
$1,970 USD
View
Price last confirmed 10 days ago
B
Retailer 11
-
€2,303 EUR
£2,026 GBP
View
Most Expensive
B
Brilliant Earth
16211350A · Oct 31
€4,252 EUR
$4,750 USD
View
11 more retailers have this diamond
Prices start from €496 EURSave up to €3,756 EUR

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
€496 EUR