CaratHunter
Plans
Cushion|Lab Grown|GCAL

1.09ct F SI1 Cushion Lab Grown Diamond

VG • F/SI1 • GCAL 331000151

Shape and cutting style on the report: Cushion modified brilliant

Certificate GCAL 331000151

Diamond specifications and retailer prices

From £199 GBP
As of November 6, 2026
Save £568 GBP (74%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £768 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.09ct lab-grown cushion diamond

This 1.09ct lab-grown cushion sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GCAL 331000151. Listed at 8 retailers as of November 5, 2026, with prices from £199 to £768, a £568 spread on the same certified stone. MOH London lists it at £768. 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

1.09
Carat
F
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle33°
Pavilion angle33.2°
OriginLab Grown
Grading LabGCAL
CertificateGCAL 331000151
Dimensions7.33 × 5.43 × 3.49 mm
L/W Ratio1.35
Culet sizeNone
Top View
7.33 mm5.43 mm1.09 ctF / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGCAL 331000151
Side View
Table 60.0%Crown 33°Girdle: THN-VTKPavilion 33.2°Culet: NoneDepth 64.2%

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: Nov 6
Current: £768 GBP|Low: £190 GBP|High: £774 GBP|Avg: £422 GBP|+6.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 5£199 GBP
Retailer 7£223 GBP
Retailer 3£257 GBP
Retailer 2£381 GBP
Retailer 4£448 GBP
Retailer 6£529 GBP
Retailer 8£659 GBP
MOH London£768 GBP

42 data points across 8 retailers

8 retailers£199 GBP to £768 GBP

A
Cheapest Retailer
-
£199 GBP
B+
Retailer 2
-
£223 GBP
View
A
Retailer 3
-
£257 GBP
View
B+
Retailer 4
-
£381 GBP
View
B
Retailer 5
-
£448 GBP
View
B
Retailer 6
-
£529 GBP
View
B
Retailer 7
-
£659 GBP
View
Most Expensive
B
MOH London
331000151 · Nov 5
£768 GBP
View
7 more retailers have this diamond
Prices start from £199 GBPSave up to £568 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
1.09ct Cushion
£199 GBP