Cushion|Lab Grown|IGI

3.78ct F VVS1 Cushion Lab Grown Diamond

ID • F/VVS1 • IGI LG828604280

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG828604280

Diamond specifications and retailer prices

From $1,322 USD
€1,259 EUR
As of October 31, 2026
Save $2,806 USD (68%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $4,128 USD at With Clarity · As of October 31, 2026
View at With Clarity

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 LG828604280 or 828604280. Listed at 9 retailers as of October 31, 2026, with prices from $1,322 to $4,128, a $2,806 spread on the same certified stone. With Clarity lists it at $4,128. 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 angle35.8°
Pavilion angle35.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG828604280
Dimensions11.32 × 7.93 × 5.26 mm
L/W Ratio1.43
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.32 mm7.93 mm3.78 ctF / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG828604280
Side View
Table 63.0%Crown 35.8°Girdle: MED-THKPavilion 35.2°Culet: NoneDepth 66.3%

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: $1,322 USD|Low: $972 USD|High: $4,212 USD|Avg: $2,747 USD|-1.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
With Clarity
October 31, 2026
Retailer 4$972 USD
Retailer 1$1,322 USD
Retailer 2$1,882 USD
Retailer 6$2,701 USD
Retailer 5$2,705 USD
Retailer 3$3,277 USD
Retailer 7$3,606 USD
With Clarity$4,128 USD

27 data points across 8 retailers

9 retailers$1,322 USD to $4,128 USD

Retailer 1
-
$972 USD
£765 GBP
Price last confirmed 14 days ago
A
Retailer 2
-
$1,322 USD
€1,259 EUR
View
A
Retailer 3
-
$1,882 USD
A$2,895 AUD
View
B+
Retailer 4
-
$2,701 USD
View
B+
Retailer 5
-
$2,705 USD
View
B+
Retailer 6
-
$3,277 USD
£2,580 GBP
View
Retailer 7
-
$3,606 USD
SGD 4,873 SGD
View
Price last confirmed 18 days ago
B
Retailer 8
-
$3,625 USD
View
Most Expensive
B
With Clarity
828604280 · Oct 31
$4,128 USD
View
8 more retailers have this diamond
Prices start from $1,322 USDSave up to $2,806 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
$1,322 USD