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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 $705 USD
As of November 5, 2026
Save $2,845 USD (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $3,550 USD 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 $705 to $3,550, a $2,845 spread on the same certified stone. Brilliant Earth lists it at $3,550. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $3,550 USD|Low: $501 USD|High: $3,830 USD|Avg: $1,341 USD|-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$501 USD
Retailer 8$616 USD
Retailer 10$705 USD
Retailer 6$728 USD
Retailer 3$793 USD
Retailer 2$816 USD
Retailer 11$878 USD
Retailer 12$991 USD
Retailer 5$1,953 USD
Retailer 7$1,960 USD
Retailer 4$2,371 USD
Brilliant Earth$3,550 USD

38 data points across 12 retailers

11 retailers$705 USD to $3,550 USD

Retailer 1
-
$501 USD
Price last confirmed 13 days ago
A
Retailer 2
-
$705 USD
View
A
Retailer 3
-
$728 USD
View
B+
Retailer 4
-
$793 USD
View
A
Retailer 5
-
$816 USD
View
A
Retailer 6
-
$878 USD
View
A
Retailer 7
-
$991 USD
View
B
Retailer 8
-
$1,953 USD
View
B
Retailer 9
-
$1,960 USD
View
Retailer 10
-
$2,371 USD
View
Price last confirmed 7 days ago
Most Expensive
B
Brilliant Earth
9869611A · Nov 4
$3,550 USD
View
10 more retailers have this diamond
Prices start from $705 USDSave up to $2,845 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
3.01ct Cushion
$705 USD