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Cushion|Lab Grown|IGI

3.78ct F VVS1 Cushion Lab Grown Diamond

ID • F/VVS1 • IGI LG789638166

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG789638166

Diamond specifications and retailer prices

From $1,115 USD
As of October 31, 2026
Save $2,424 USD (68%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $3,539 USD at MOH London · As of October 29, 2026
View at MOH London

About this 3.78ct lab-grown cushion diamond

This 3.78ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG789638166 or 789638166. Listed at 11 retailers as of October 29, 2026, with prices from $1,115 to $3,539, a $2,424 spread on the same certified stone. MOH London lists it at $3,539. 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

3.78
Carat
F
Color
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.6°
Pavilion angle32.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG789638166
Dimensions11.43 × 7.67 × 5.04 mm
L/W Ratio1.49
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.43 mm7.67 mm3.78 ctF / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG789638166
Side View
Table 64.0%Crown 39.6°Girdle: STK-VTKPavilion 32.9°Culet: NoneDepth 65.7%

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: Oct 31
Current: $3,539 USD|Low: $1,115 USD|High: $3,613 USD|Avg: $2,369 USD|-1.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 6$1,115 USD
Retailer 8$1,338 USD
Retailer 5$1,442 USD
Retailer 9$1,515 USD
Retailer 2$2,121 USD
Retailer 7$2,181 USD
Retailer 10$2,586 USD
Retailer 11$2,591 USD
Retailer 3$3,000 USD
Retailer 4$3,199 USD
Retailer 12$3,250 USD
MOH London$3,539 USD

42 data points across 12 retailers

11 retailers$1,115 USD to $3,539 USD

A
Cheapest Retailer
-
$1,115 USD
A
Retailer 2
-
$1,338 USD
View
A
Retailer 3
-
$1,442 USD
£1,135 GBP
View
A
Retailer 4
-
$1,515 USD
View
B+
Retailer 5
-
$2,121 USD
A$3,263 AUD
View
B+
Retailer 6
-
$2,181 USD
ZAR 35,228 ZAR
View
B+
Retailer 7
-
$2,586 USD
View
B+
Retailer 8
-
$2,591 USD
£2,040 GBP
View
B+
Retailer 9
-
$3,000 USD
View
B
Retailer 10
-
$3,250 USD
View
Most Expensive
B
MOH London
LG789638166 · Oct 29
$3,539 USD
£2,787 GBP
View
10 more retailers have this diamond
Prices start from $1,115 USDSave up to $2,424 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
3.78ct Cushion
$1,115 USD