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Cushion|Lab Grown|IGI

1.01ct H VS1 Cushion Lab Grown Diamond

VG • H/VS1 • IGI LG551209403

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG551209403

Diamond specifications and retailer prices

From £187 GBP
$251 USD
As of October 30, 2026
Save £502 GBP (73%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £689 GBP at MOH London · As of November 1, 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 H colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG551209403 or 551209403. Listed at 7 retailers as of October 30, 2026, with prices from £187 to £689, a £502 spread on the same certified stone. MOH London lists it at £689. 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
H
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.7°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG551209403
Dimensions5.68 × 5.61 × 3.96 mm
L/W Ratio1.01
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
5.68 mm5.61 mm1.01 ctH / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG551209403
Side View
Table 62.0%Crown 32.7°Girdle: STK-VTKPavilion 40.3°Culet: NoneDepth 70.6%

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 30
Current: £689 GBP|Low: £187 GBP|High: £698 GBP|Avg: £395 GBP|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 7£187 GBP
Retailer 4£247 GBP
Retailer 2£280 GBP
Retailer 3£336 GBP
Retailer 5£372 GBP
Retailer 8£470 GBP
Retailer 6£604 GBP
MOH London£689 GBP

19 data points across 8 retailers

7 retailers£187 GBP to £689 GBP

A
Cheapest Retailer
-
£187 GBP
$251 USD
A
Retailer 2
-
£247 GBP
$331 USD
View
A
Retailer 3
-
£280 GBP
View
B+
Retailer 4
-
£336 GBP
$450 USD
View
B+
Retailer 5
-
£372 GBP
$498 USD
View
B
Retailer 6
-
£604 GBP
$809 USD
View
Most Expensive
B
MOH London
LG551209403 · Nov 1
£689 GBP
View
6 more retailers have this diamond
Prices start from £187 GBPSave up to £502 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
£187 GBP