Cushion|Lab Grown|IGI

6.50ct E SI2 Cushion Lab Grown Diamond

EX • E/SI2 • IGI LG805690078

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG805690078

Diamond specifications and retailer prices

From £898 GBP
$1,203 USD
As of October 29, 2026
Save £8,251 GBP (90%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £9,149 GBP at Mervis Diamond Importers · As of October 29, 2026
View at Mervis Diamond Importers

About this 6.5ct lab-grown cushion diamond

This 6.5ct lab-grown cushion sits in the over five carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG805690078 or 805690078. Listed at 11 retailers as of October 29, 2026, with prices from £898 to £9,149, a £8,251 spread on the same certified stone. Mervis Diamond Importers lists it at £9,149. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

6.50
Carat
E
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31°
Pavilion angle33.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG805690078
Dimensions14.03 × 9.75 × 6.14 mm
L/W Ratio1.44
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.03 mm9.75 mm6.50 ctE / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG805690078
Side View
Table 61.0%Crown 31°Girdle: MED-STKPavilion 33.3°Culet: NoneDepth 63.0%

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: Oct 29
Current: £9,149 GBP|Low: £898 GBP|High: £10,049 GBP|Avg: £2,822 GBP|-9.0%
Mervis Diamond Importers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 11£898 GBP
Retailer 9£930 GBP
Retailer 10£1,282 GBP
Retailer 4£1,309 GBP
Retailer 2£1,486 GBP
Retailer 6£1,732 GBP
Retailer 3£2,519 GBP
Retailer 5£3,302 GBP
Retailer 7£3,553 GBP
Retailer 8£4,097 GBP
Mervis Diamond Importers£9,149 GBP

40 data points across 11 retailers

11 retailers£898 GBP to £9,149 GBP

A
Cheapest Retailer
-
£898 GBP
$1,203 USD
Final sale: no returns
Retailer 2
-
£930 GBP
$1,246 USD
View
Price last confirmed 18 days ago
A
Retailer 3
-
£1,282 GBP
$1,718 USD
View
B+
Retailer 4
-
£1,309 GBP
$1,754 USD
View
B+
Retailer 5
-
£1,486 GBP
View
B+
Retailer 6
-
£1,732 GBP
$2,321 USD
View
B
Retailer 7
-
£2,519 GBP
$3,375 USD
View
B
Retailer 8
-
£3,302 GBP
View
B
Retailer 9
-
£3,553 GBP
$4,761 USD
View
Retailer 10
-
£4,097 GBP
$5,490 USD
View
Price last confirmed 9 days ago
Most Expensive
B
Mervis Diamond Importers
1985410064 · Oct 29
£9,149 GBP
$12,258 USD
View
10 more retailers have this diamond
Prices start from £898 GBPSave up to £8,251 GBP

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
6.50ct Cushion
£898 GBP