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Cushion|Lab Grown|IGI

1.20ct G VS1 Cushion Lab Grown Diamond

VG • G/VS1 • IGI LG591326504

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG591326504

Diamond specifications and retailer prices

From £476 GBP
As of November 5, 2026
Save £490 GBP (51%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £966 GBP at Jared · As of November 4, 2026
View at Jared

About this 1.2ct lab-grown cushion diamond

This 1.2ct lab-grown cushion sits in the classic one-carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG591326504 or 591326504. Listed at 4 retailers as of November 4, 2026, with prices from £476 to £966, a £490 spread on the same certified stone. Jared lists it at £966. 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

1.20
Carat
G
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.1°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG591326504
Dimensions7.12 × 5.65 × 3.85 mm
L/W Ratio1.26
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
7.12 mm5.65 mm1.20 ctG / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG591326504
Side View
Table 63.0%Crown 32.1°Girdle: MED-STKPavilion 38.7°Culet: NoneDepth 68.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £966 GBP|Low: £476 GBP|High: £966 GBP|Avg: £726 GBP
Jared
Retailer 2
Retailer 3
Retailer 4
September 26, 2026
Retailer 2£476 GBP
Retailer 3£669 GBP
Retailer 4£669 GBP
Jared£966 GBP

2 data points across 4 retailers

4 retailers£476 GBP to £966 GBP

B+
Cheapest Retailer
-
£476 GBP
B
Retailer 2
-
£669 GBP
View
B
Retailer 3
-
£669 GBP
View
Most Expensive
B
Jared
156542711 · Nov 4
£966 GBP
$1,300 USD
View
3 more retailers have this diamond
Prices start from £476 GBPSave up to £490 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.

B+
1.20ct Cushion
£476 GBP