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Cushion|Lab Grown|IGI

1.01ct D SI1 Cushion Lab Grown Diamond

VG • D/SI1 • IGI LG508155768

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG508155768

Diamond specifications and retailer prices

From £279 GBP
As of November 6, 2026
Save £954 GBP (77%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £1,233 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.01ct lab-grown cushion diamond

This 1.01ct lab-grown cushion sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG508155768 or 508155768. Listed at 8 retailers as of November 5, 2026, with prices from £279 to £1,233, a £954 spread on the same certified stone. MOH London lists it at £1,233. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.01
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.3°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG508155768
Dimensions6.48 × 5.35 × 3.73 mm
L/W Ratio1.21
Girdle conditionFaceted
Culet sizePointed
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
6.48 mm5.35 mm1.01 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG508155768
Side View
Table 56.0%Crown 37.3°Girdle: MED-VTKPavilion 41.1°Culet: NoneDepth 69.7%

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: Nov 6
Current: £1,233 GBP|Low: £199 GBP|High: £1,251 GBP|Avg: £517 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 6£279 GBP
Retailer 8£288 GBP
Retailer 4£388 GBP
Retailer 7£422 GBP
Retailer 2£477 GBP
Retailer 5£498 GBP
Retailer 3£547 GBP
MOH London£1,233 GBP

43 data points across 8 retailers

8 retailers£279 GBP to £1,233 GBP

A
Cheapest Retailer
-
£279 GBP
Final sale: no returns
A
Retailer 2
-
£288 GBP
View
B+
Retailer 3
-
£388 GBP
View
B
Retailer 4
-
£422 GBP
View
B+
Retailer 5
-
£477 GBP
View
B
Retailer 6
-
£498 GBP
View
B
Retailer 7
-
£547 GBP
View
Most Expensive
B
MOH London
LG508155768 · Nov 5
£1,233 GBP
View
7 more retailers have this diamond
Prices start from £279 GBPSave up to £954 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
1.01ct Cushion
£279 GBP