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Cushion|Lab Grown|IGI

6.65ct H SI2 Cushion Lab Grown Diamond

ID • H/SI2 • IGI LG571309737

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG571309737

Diamond specifications and retailer prices

From £783 GBP
HK$8,200 HKD
As of October 31, 2026
Save £1,715 GBP (69%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £2,499 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 6.65ct lab-grown cushion diamond

This 6.65ct lab-grown cushion sits in the over five carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG571309737 or 571309737. Listed at 7 retailers as of October 29, 2026, with prices from £783 to £2,499, a £1,715 spread on the same certified stone. MOH London lists it at £2,499. 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

6.65
Carat
H
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG571309737
Dimensions12.48 × 10.30 × 6.95 mm
L/W Ratio1.21
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
12.48 mm10.30 mm6.65 ctH / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG571309737
Side View
Table 62.0%Crown 34.3°Girdle: MED-STKPavilion 39.7°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: Oct 31
Current: £2,499 GBP|Low: £783 GBP|High: £6,173 GBP|Avg: £2,530 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 5£783 GBP
Retailer 3£791 GBP
Retailer 4£1,003 GBP
Retailer 2£1,052 GBP
Retailer 7£1,072 GBP
Retailer 6£1,742 GBP
MOH London£2,499 GBP
Retailer 9£4,007 GBP
Retailer 10£5,426 GBP
Retailer 8£6,173 GBP

4 data points across 10 retailers

7 retailers£783 GBP to £2,499 GBP

A
Cheapest Retailer
-
£783 GBP
HK$8,200 HKD
A
Retailer 2
-
£791 GBP
View
B+
Retailer 3
-
£1,003 GBP
$1,344 USD
View
B+
Retailer 4
-
£1,052 GBP
€1,342 EUR
View
B+
Retailer 5
-
£1,072 GBP
$1,437 USD
View
B+
Retailer 6
-
£1,742 GBP
$2,334 USD
View
Most Expensive
B
MOH London
LG571309737 · Oct 29
£2,499 GBP
View
6 more retailers have this diamond
Prices start from £783 GBPSave up to £1,715 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
6.65ct Cushion
£783 GBP