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Cushion|Lab Grown|IGI

6.39ct F VVS1 Cushion Lab Grown Diamond

EX • F/VVS1 • IGI LG670463837

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG670463837

Diamond specifications and retailer prices

From €2,323 EUR
$2,606 USD
As of November 1, 2026
Save €7,823 EUR (77%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: €13,427 EUR at Brilliant Earth · As of October 18, 2026
View at Brilliant Earth

About this 6.39ct lab-grown cushion diamond

This 6.39ct lab-grown cushion sits in the over five carat band, graded F colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG670463837 or 670463837. Listed at 4 retailers as of November 1, 2026, with a 337% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

6.39
Carat
F
Color
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle38°
OriginLab Grown
Grading LabIGI
CertificateIGI LG670463837
Dimensions12.62 × 10.12 × 6.53 mm
L/W Ratio1.25
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
12.62 mm10.12 mm6.39 ctF / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG670463837
Side View
Table 62.0%Crown 35.4°Girdle: MED-STKPavilion 38°Culet: NoneDepth 64.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: €13,427 EUR|Low: €2,095 EUR|High: €37,687 EUR|Avg: €12,899 EUR|-8.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 4, 2026
Retailer 2€2,323 EUR
Retailer 7€2,425 EUR
Retailer 6€3,655 EUR
Retailer 9€4,622 EUR
Retailer 4€5,854 EUR
Retailer 5€7,022 EUR
Retailer 10€8,855 EUR
Retailer 11€9,624 EUR
Brilliant Earth€13,427 EUR
Retailer 8€20,872 EUR
Retailer 3€32,808 EUR

53 data points across 11 retailers

4 retailers€2,323 EUR to €10,146 EUR

A
Cheapest Retailer
-
€2,323 EUR
$2,606 USD
Retailer 2
-
€5,854 EUR
$6,566 USD
View
Price last confirmed 90 days ago
B
Retailer 3
-
€10,146 EUR
$11,380 USD
View
Most Expensive
Brilliant Earth
17792836Y · Oct 18
€13,427 EUR
$15,060 USD
View
Price last confirmed 15 days ago
3 more retailers have this diamond
Prices start from €2,323 EURSave up to €7,823 EUR

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
6.39ct Cushion
€2,323 EUR