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Cushion|Lab Grown|IGI

11.21ct G VS1 Cushion Lab Grown Diamond

EX • G/VS1 • IGI LG605326749

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG605326749

Diamond specifications and retailer prices

From $4,534 USD
As of November 1, 2026
Save $13,676 USD (75%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $18,210 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 11.21ct lab-grown cushion diamond

This 11.21ct 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 LG605326749 or 605326749. Listed at 4 retailers as of October 31, 2026, with prices from $4,534 to $18,210, a $13,676 spread on the same certified stone. Brilliant Earth lists it at $18,210. 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

11.21
Carat
G
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.2°
Pavilion angle37.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG605326749
Dimensions15.10 × 12.34 × 7.82 mm
L/W Ratio1.22
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
15.10 mm12.34 mm11.21 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG605326749
Side View
Table 59.0%Crown 37.2°Girdle: MED-THKPavilion 37.5°Culet: NoneDepth 63.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $18,210 USD|Low: $1,706 USD|High: $19,150 USD|Avg: $6,886 USD|-3.0%
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
October 31, 2026
Retailer 7$1,706 USD
Retailer 14$3,281 USD
Retailer 12$3,390 USD
Retailer 4$4,227 USD
Retailer 13$4,534 USD
Retailer 9$4,641 USD
Retailer 5$4,850 USD
Retailer 2$5,400 USD
Retailer 6$5,639 USD
Retailer 8$5,982 USD
Retailer 3$7,509 USD
Retailer 15$8,878 USD
Retailer 10$9,229 USD
Brilliant Earth$18,210 USD
Retailer 11$19,150 USD

20 data points across 15 retailers

4 retailers$4,534 USD to $18,210 USD

A
Cheapest Retailer
-
$4,534 USD
B+
Retailer 2
-
$5,400 USD
€5,143 EUR
View
B
Retailer 3
-
$8,878 USD
View
Most Expensive
B
Brilliant Earth
18094760A · Oct 31
$18,210 USD
View
3 more retailers have this diamond
Prices start from $4,534 USDSave up to $13,676 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
11.21ct Cushion
$4,534 USD