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Cushion|Lab Grown|IGI

0.67ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG805671991

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG805671991

Diamond specifications and retailer prices

From £124 GBP
HK$1,300 HKD
As of October 30, 2026
Save £797 GBP (87%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £921 GBP at MOH London · As of October 25, 2026
View at MOH London

About this 0.67ct lab-grown cushion diamond

This 0.67ct lab-grown cushion sits in the half to three-quarter carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG805671991 or 805671991. Listed at 10 retailers as of October 25, 2026, with prices from £124 to £921, a £797 spread on the same certified stone. MOH London lists it at £921. 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

0.67
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle34.5°
Pavilion angle37.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG805671991
Dimensions5.03 × 5.01 × 3.14 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.03 mm5.01 mm0.67 ctD / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG805671991
Side View
Table 65.0%Crown 34.5°Girdle: STK-THKPavilion 37.1°Culet: NoneDepth 62.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £921 GBP|Low: £99 GBP|High: £931 GBP|Avg: £315 GBP|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 9£99 GBP
Retailer 10£194 GBP
Retailer 2£194 GBP
Retailer 8£213 GBP
Retailer 5£225 GBP
Retailer 3£264 GBP
Retailer 6£271 GBP
Retailer 7£285 GBP
Retailer 4£321 GBP
MOH London£921 GBP

40 data points across 10 retailers

10 retailers£124 GBP to £921 GBP

A
Cheapest Retailer
-
£124 GBP
HK$1,300 HKD
A
Retailer 2
-
£194 GBP
€248 EUR
View
A
Retailer 3
-
£213 GBP
$286 USD
View
A
Retailer 4
-
£225 GBP
View
B+
Retailer 5
-
£264 GBP
$354 USD
View
B+
Retailer 6
-
£271 GBP
View
B+
Retailer 7
-
£285 GBP
$382 USD
View
B+
Retailer 8
-
£307 GBP
SGD 556 SGD
View
B+
Retailer 9
-
£321 GBP
$430 USD
View
Most Expensive
B
MOH London
LG805671991 · Oct 25
£921 GBP
View
9 more retailers have this diamond
Prices start from £124 GBPSave up to £797 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
0.67ct Cushion
£124 GBP