Cushion|Lab Grown|IGI

4.51ct F VS2 Cushion Lab Grown Diamond

ID • F/VS2 • IGI LG846639641

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG846639641

Diamond specifications and retailer prices

From $649 USD
£511 GBP
As of November 1, 2026
Save $2,618 USD (80%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $3,266 USD at MOH London · As of November 1, 2026
View at MOH London

About this 4.51ct lab-grown cushion diamond

This 4.51ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG846639641 or 846639641. Listed at 8 retailers as of November 1, 2026, with prices from $649 to $3,266, a $2,618 spread on the same certified stone. MOH London lists it at $3,266. 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

4.51
Carat
F
Color
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846639641
Dimensions11.60 × 8.30 × 5.60 mm
L/W Ratio1.40
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.60 mm8.30 mm4.51 ctF / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846639641
Side View
Table 63.0%Crown 34.5°Girdle: STK-THKPavilion 35.1°Culet: NoneDepth 67.5%

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 1
Current: $3,266 USD|Low: $649 USD|High: $3,283 USD|Avg: $1,596 USD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 3$649 USD
Retailer 5$679 USD
Retailer 4$880 USD
Retailer 8$1,153 USD
Retailer 2$1,178 USD
Retailer 7$1,757 USD
Retailer 6$2,400 USD
MOH London$3,266 USD

8 data points across 8 retailers

8 retailers$649 USD to $3,266 USD

A
Cheapest Retailer
-
$649 USD
£511 GBP
A
Retailer 2
-
$679 USD
View
Final sale: no returns
A
Retailer 3
-
$880 USD
View
B+
Retailer 4
-
$1,153 USD
View
A
Retailer 5
-
$1,178 USD
£927 GBP
View
A
Retailer 6
-
$1,757 USD
View
B+
Retailer 7
-
$2,400 USD
View
Most Expensive
B
MOH London
LG846639641 · Nov 1
$3,266 USD
£2,572 GBP
View
7 more retailers have this diamond
Prices start from $649 USDSave up to $2,618 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
4.51ct Cushion
$649 USD