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Radiant|Lab Grown|IGI

1.31ct G VVS2 Radiant Lab Grown Diamond

VG • G/VVS2 • IGI LG660421558

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG660421558

Diamond specifications and retailer prices

From £359 GBP
As of November 4, 2026
Save £75 GBP (17%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £433 GBP at Diamond Quarter · As of November 2, 2026
View at Diamond Quarter

About this 1.31ct lab-grown radiant diamond

This 1.31ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded G colour (near-colourless) and VVS2 clarity (very-very-slightly-included), with a very-good cut grade and certified by IGI LG660421558 or 660421558. Listed at 2 retailers as of November 2, 2026, with prices from £359 to £433, a £75 spread on the same certified stone. Diamond Quarter lists it at £433. 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

1.31
Carat
G
Colour
VVS2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.7°
Pavilion angle36.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG660421558
Dimensions7.57 × 5.24 × 3.73 mm
L/W Ratio1.44
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.57 mm5.24 mm1.31 ctG / VVS2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG660421558
Side View
Table 66.0%Crown 39.7°Girdle: Slightly ThickPavilion 36.2°Culet: NoneDepth 71.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 4
Current: £359 GBP|Low: £352 GBP|High: £520 GBP|Avg: £407 GBP|-31.1%
September 23, 2026
Retailer 1£359 GBP

4 data points across 1 retailer

2 retailers£359 GBP to £433 GBP

B+
Cheapest Retailer
-
£359 GBP
Most Expensive
B
Diamond Quarter
1.31VVS2GLG581459N · Nov 2
£433 GBP
View
1 more retailer has this diamond
Prices start from £359 GBPSave up to £75 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+
1.31ct Radiant
£359 GBP