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Cushion|Lab Grown|IGI

3.08ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG607388765

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG607388765

Diamond specifications and retailer prices

From $640 USD
As of November 5, 2026
Save $2,080 USD (76%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $2,720 USD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 3.08ct lab-grown cushion diamond

This 3.08ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG607388765 or 607388765. Listed at 10 retailers as of November 4, 2026, with prices from $640 to $2,720, a $2,080 spread on the same certified stone. Brilliant Earth lists it at $2,720. 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

3.08
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG607388765
Dimensions8.55 × 8.38 × 5.49 mm
L/W Ratio1.02
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
8.55 mm8.38 mm3.08 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG607388765
Side View
Table 63.0%Crown 35.8°Girdle: MED-THKPavilion 38.7°Culet: NoneDepth 65.5%

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: $2,720 USD|Low: $492 USD|High: $3,170 USD|Avg: $1,249 USD|-14.2%
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$492 USD
Retailer 10$605 USD
Retailer 7$640 USD
Retailer 6$718 USD
Retailer 3$782 USD
Retailer 2$800 USD
Retailer 11$873 USD
Retailer 12$1,052 USD
Retailer 5$1,922 USD
Retailer 8$1,970 USD
Retailer 4$2,392 USD
Brilliant Earth$2,720 USD

40 data points across 12 retailers

10 retailers$640 USD to $2,720 USD

Retailer 1
-
$492 USD
Price last confirmed 12 days ago
A
Retailer 2
-
$640 USD
View
A
Retailer 3
-
$718 USD
View
B+
Retailer 4
-
$782 USD
View
A
Retailer 5
-
$800 USD
View
A
Retailer 6
-
$873 USD
View
A
Retailer 7
-
$1,052 USD
View
B
Retailer 8
-
$1,922 USD
View
B
Retailer 9
-
$2,392 USD
View
Most Expensive
B
Brilliant Earth
8587033A · Nov 4
$2,720 USD
View
9 more retailers have this diamond
Prices start from $640 USDSave up to $2,080 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
3.08ct Cushion
$640 USD