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Radiant|Lab Grown|IGI

1.51ct G VVS1 Radiant Lab Grown Diamond

VG • G/VVS1 • IGI LG831605841

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

Certificate IGI LG831605841

Diamond specifications and retailer prices

From £257 GBP
As of November 4, 2026
Save £440 GBP (63%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £1,493 GBP at Brilliant Earth · As of October 15, 2026
View at Brilliant Earth

About this 1.51ct lab-grown radiant diamond

This 1.51ct lab-grown radiant sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and VVS1 clarity (very-very-slightly-included), with a very-good cut grade and certified by IGI LG831605841 or 831605841. Listed at 3 retailers as of November 4, 2026, with a 171% 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

1.51
Carat
G
Colour
VVS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.1°
Pavilion angle36.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831605841
Dimensions8.14 × 5.62 × 3.85 mm
L/W Ratio1.45
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.14 mm5.62 mm1.51 ctG / VVS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831605841
Side View
Table 64.0%Crown 47.1°Girdle: MediumPavilion 36.5°Culet: NoneDepth 68.5%

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 4
Current: £1,493 GBP|Low: £257 GBP|High: £1,493 GBP|Avg: £496 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 4, 2026
Retailer 2£257 GBP
Retailer 5£299 GBP
Retailer 4£351 GBP
Retailer 6£413 GBP
Retailer 8£463 GBP
Retailer 7£618 GBP
Retailer 3£697 GBP
Brilliant Earth£1,493 GBP

21 data points across 8 retailers

3 retailers£257 GBP to £697 GBP

B+
Cheapest Retailer
-
£257 GBP
B
Retailer 2
-
£697 GBP
View
Most Expensive
Brilliant Earth
21231114A · Oct 15
£1,493 GBP
$2,010 USD
View
Price last confirmed 21 days ago
2 more retailers have this diamond
Prices start from £257 GBPSave up to £440 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+
1.51ct Radiant
£257 GBP