Radiant|Lab Grown|IGI

3.12ct J VS1 Radiant Lab Grown Diamond

VG • J/VS1 • IGI LG607347402

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

Certificate IGI LG607347402

Diamond specifications and retailer prices

From £588 GBP
$783 USD
As of October 29, 2026
Save £949 GBP (62%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £1,537 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 3.12ct lab-grown radiant diamond

This 3.12ct lab-grown radiant sits in the three to five carat band, graded J colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG607347402 or 607347402. Listed at 7 retailers as of October 29, 2026, with prices from £588 to £1,537, a £949 spread on the same certified stone. MOH London lists it at £1,537. 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

3.12
Carat
J
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.6°
Pavilion angle36.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG607347402
Dimensions9.80 × 7.26 × 5.12 mm
L/W Ratio1.35
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Indications of post-growth treatment.
Top View
9.80 mm7.26 mm3.12 ctJ / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG607347402
Side View
Table 63.0%Crown 37.6°Girdle: STK-THKPavilion 36.5°Culet: NoneDepth 70.5%

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: Oct 29
Current: £1,537 GBP|Low: £466 GBP|High: £1,548 GBP|Avg: £909 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 29, 2026
Retailer 9£466 GBP
Retailer 6£588 GBP
Retailer 4£597 GBP
Retailer 5£608 GBP
Retailer 8£623 GBP
Retailer 2£904 GBP
Retailer 3£1,427 GBP
Retailer 7£1,451 GBP
MOH London£1,537 GBP

20 data points across 9 retailers

7 retailers£588 GBP to £1,537 GBP

A
Cheapest Retailer
-
£588 GBP
$783 USD
B+
Retailer 2
-
£597 GBP
$795 USD
View
B+
Retailer 3
-
£608 GBP
$809 USD
View
B+
Retailer 4
-
£904 GBP
ZAR 19,445 ZAR
View
Retailer 5
-
£1,427 GBP
$1,900 USD
View
Price last confirmed 25 days ago
B
Retailer 6
-
£1,451 GBP
$1,932 USD
View
Most Expensive
B
MOH London
LG607347402 · Oct 29
£1,537 GBP
View
6 more retailers have this diamond
Prices start from £588 GBPSave up to £949 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
3.12ct Radiant
£588 GBP