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Cushion|Lab Grown|IGI

3.05ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG812619683

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG812619683

Diamond specifications and retailer prices

From $396 USD
As of November 6, 2026
Save $2,164 USD (85%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,560 USD at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 3.05ct lab-grown cushion diamond

This 3.05ct 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 LG812619683 or 812619683. Listed at 15 retailers as of November 6, 2026, with prices from $396 to $2,560, a $2,164 spread on the same certified stone. Brilliant Earth lists it at $2,560. 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

3.05
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG812619683
Dimensions10.28 × 7.42 × 4.67 mm
L/W Ratio1.39
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.28 mm7.42 mm3.05 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG812619683
Side View
Table 61.0%Crown 34.1°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 62.9%

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: Nov 6
Current: $2,560 USD|Low: $396 USD|High: $2,560 USD|Avg: $1,057 USD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 6, 2026
Retailer 12$396 USD
Retailer 6$486 USD
Retailer 8$535 USD
Retailer 11$590 USD
Retailer 2$678 USD
Retailer 13$706 USD
Retailer 7$761 USD
Retailer 9$784 USD
Retailer 14$1,034 USD
Retailer 4$1,097 USD
Retailer 15$1,104 USD
Retailer 3$1,407 USD
Retailer 10$1,714 USD
Retailer 5$1,950 USD
Brilliant Earth$2,560 USD

30 data points across 15 retailers

15 retailers$396 USD to $2,560 USD

A
Cheapest Retailer
-
$396 USD
Final sale: no returns
A
Retailer 2
-
$486 USD
View
A
Retailer 3
-
$535 USD
View
A
Retailer 4
-
$590 USD
View
A
Retailer 5
-
$678 USD
View
B+
Retailer 6
-
$706 USD
View
Retailer 7
-
$761 USD
View
Price last confirmed 11 days ago
A
Retailer 8
-
$784 USD
View
A
Retailer 9
-
$1,034 USD
View
A
Retailer 10
-
$1,097 USD
View
B+
Retailer 11
-
$1,104 USD
View
B+
Retailer 12
-
$1,407 USD
View
B+
Retailer 13
-
$1,714 USD
View
Retailer 14
-
$1,950 USD
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
20319639A · Nov 6
$2,560 USD
View
14 more retailers have this diamond
Prices start from $396 USDSave up to $2,164 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
3.05ct Cushion
$396 USD