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Cushion|Lab Grown|IGI

1.00ct D SI2 Cushion Lab Grown Diamond

ID • D/SI2 • IGI LG808639133

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

Certificate IGI LG808639133

Diamond specifications and retailer prices

From £214 GBP
As of November 6, 2026
Save £494 GBP (70%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £708 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1ct lab-grown cushion diamond

This 1ct lab-grown cushion sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG808639133 or 808639133. Listed at 9 retailers as of November 4, 2026, with prices from £214 to £708, a £494 spread on the same certified stone. MOH London lists it at £708. 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

1.00
Carat
D
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG808639133
Dimensions5.85 × 5.77 × 3.84 mm
L/W Ratio1.01
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
5.85 mm5.77 mm1.00 ctD / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG808639133
Side View
Table 63.0%Crown 33.5°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 66.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £708 GBP|Low: £212 GBP|High: £727 GBP|Avg: £381 GBP|+4.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 5£214 GBP
Retailer 2£257 GBP
Retailer 3£266 GBP
Retailer 7£273 GBP
Retailer 8£288 GBP
Retailer 4£411 GBP
Retailer 6£426 GBP
MOH London£708 GBP

45 data points across 8 retailers

9 retailers£214 GBP to £708 GBP

A
Cheapest Retailer
-
£214 GBP
A
Retailer 2
-
£257 GBP
View
A
Retailer 3
-
£266 GBP
View
A
Retailer 4
-
£273 GBP
View
A
Retailer 5
-
£288 GBP
View
Retailer 6
-
£395 GBP
View
Price last confirmed 117 days ago
B
Retailer 7
-
£411 GBP
View
B+
Retailer 8
-
£426 GBP
View
Most Expensive
B
MOH London
LG808639133 · Nov 4
£708 GBP
View
8 more retailers have this diamond
Prices start from £214 GBPSave up to £494 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
1.00ct Cushion
£214 GBP