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Cushion|Lab Grown|IGI

1.00ct D SI1 Cushion Lab Grown Diamond

VG • D/SI1 • IGI LG758568453

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

Certificate IGI LG758568453

Diamond specifications and retailer prices

From £209 GBP
As of November 4, 2026
Save £239 GBP (53%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £985 GBP at MOH London · As of October 8, 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 SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG758568453 or 758568453. Listed at 7 retailers as of November 3, 2026, with a 114% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.00
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle43.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG758568453
Dimensions5.95 × 5.78 × 4.00 mm
L/W Ratio1.03
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.95 mm5.78 mm1.00 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG758568453
Side View
Table 66.0%Crown 33.9°Girdle: MED-STKPavilion 43.3°Culet: NoneDepth 69.2%

Caratlytics Score

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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 4
Current: £985 GBP|Low: £55 GBP|High: £1,095 GBP|Avg: £468 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 4£55 GBP
Retailer 5£209 GBP
Retailer 12£229 GBP
Retailer 7£236 GBP
Retailer 2£291 GBP
Retailer 11£301 GBP
Retailer 6£388 GBP
Retailer 3£448 GBP
Retailer 8£811 GBP
MOH London£985 GBP
Retailer 10£1,061 GBP
Retailer 9£1,095 GBP

14 data points across 12 retailers

7 retailers£209 GBP to £448 GBP

A
Cheapest Retailer
-
£209 GBP
Retailer 2
-
£229 GBP
View
Price last confirmed 29 days ago
A
Retailer 3
-
£236 GBP
View
B+
Retailer 4
-
£291 GBP
View
B+
Retailer 5
-
£388 GBP
View
B
Retailer 6
-
£448 GBP
View
Most Expensive
MOH London
LG758568453 · Oct 8
£985 GBP
View
Price last confirmed 29 days ago
6 more retailers have this diamond
Prices start from £209 GBPSave up to £239 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
£209 GBP