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Cushion|Lab Grown|IGI

11.45ct G VS1 Cushion Lab Grown Diamond

ID • G/VS1 • IGI LG618439643

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG618439643

Diamond specifications and retailer prices

From $2,023 USD
£1,593 GBP
As of November 1, 2026
Save $16,577 USD (89%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $18,600 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 11.45ct lab-grown cushion diamond

This 11.45ct lab-grown cushion sits in the over five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG618439643 or 618439643. Listed at 19 retailers as of October 31, 2026, with prices from $2,023 to $18,600, a $16,577 spread on the same certified stone. Brilliant Earth lists it at $18,600. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

11.45
Carat
G
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38°
Pavilion angle31.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG618439643
Dimensions12.43 × 12.29 × 7.97 mm
L/W Ratio1.01
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
12.43 mm12.29 mm11.45 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG618439643
Side View
Table 63.0%Crown 38°Girdle: THK-VTKPavilion 31.2°Culet: NoneDepth 64.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $18,600 USD|Low: $2,023 USD|High: $19,170 USD|Avg: $5,015 USD|+10.5%
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
Retailer 16
November 1, 2026
Retailer 9$2,023 USD
Retailer 3$2,430 USD
Retailer 6$2,518 USD
Retailer 16$2,685 USD
Retailer 7$3,043 USD
Retailer 10$3,466 USD
Retailer 15$3,599 USD
Retailer 13$3,600 USD
Retailer 11$3,800 USD
Retailer 12$3,898 USD
Retailer 2$4,666 USD
Retailer 8$4,785 USD
Retailer 14$6,005 USD
Retailer 5$6,724 USD
Retailer 4$7,135 USD
Brilliant Earth$18,600 USD

43 data points across 16 retailers

19 retailers$2,023 USD to $18,600 USD

A
Cheapest Retailer
-
$2,023 USD
£1,593 GBP
A
Retailer 2
-
$2,430 USD
View
Final sale: no returns
Retailer 3
-
$2,518 USD
View
Price last confirmed 21 days ago
A
Retailer 4
-
$2,685 USD
View
A
Retailer 5
-
$3,043 USD
View
A
Retailer 6
-
$3,466 USD
£2,729 GBP
View
A
Retailer 7
-
$3,599 USD
View
A
Retailer 8
-
$3,600 USD
View
A
Retailer 9
-
$3,800 USD
€3,619 EUR
View
A
Retailer 10
-
$3,898 USD
ZAR 62,979 ZAR
View
A
Retailer 11
-
$4,666 USD
A$7,178 AUD
View
B+
Retailer 12
-
$4,785 USD
£3,768 GBP
View
Retailer 13
-
$6,005 USD
View
Price last confirmed 11 days ago
B+
Retailer 14
-
$6,247 USD
View
B+
Retailer 15
-
$6,724 USD
View
B+
Retailer 16
-
$7,135 USD
View
B
Retailer 17
-
$7,751 USD
View
B
Retailer 18
-
$8,803 USD
View
Most Expensive
B
Brilliant Earth
10794074A · Oct 31
$18,600 USD
View
18 more retailers have this diamond
Prices start from $2,023 USDSave up to $16,577 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
11.45ct Cushion
$2,023 USD