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Round|Lab Grown|IGI

3.12ct J VS2 Round Lab Grown Diamond

ID • J/VS2 • IGI LG508123877

Shape and cutting style on the report: Round brilliant

Certificate IGI LG508123877

Diamond specifications and retailer prices

From £530 GBP
As of November 5, 2026
Save £1,879 GBP (78%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £2,409 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 3.12ct lab-grown round diamond

This 3.12ct lab-grown round sits in the three to five carat band, graded J colour (near-colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG508123877 or 508123877. Listed at 15 retailers as of November 5, 2026, with prices from £530 to £2,409, a £1,879 spread on the same certified stone. MOH London lists it at £2,409. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.12
Carat
J
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG508123877
Dimensions9.32 × 9.40 × 5.82 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
9.32 mm9.40 mm3.12 ctJ / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG508123877
Side View
Table 56.5%Crown 35.3°GirdlePavilion 40.9°Culet: NoneDepth 62.2%

Caratlytics Score

How it works →
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: Nov 5
Current: £2,409 GBP|Low: £530 GBP|High: £2,448 GBP|Avg: £1,279 GBP|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 8£530 GBP
Retailer 10£593 GBP
Retailer 3£713 GBP
Retailer 5£747 GBP
Retailer 9£841 GBP
Retailer 7£999 GBP
Retailer 11£1,114 GBP
Retailer 4£1,235 GBP
Retailer 2£1,248 GBP
Retailer 6£1,515 GBP
Retailer 12£2,120 GBP
MOH London£2,409 GBP

24 data points across 12 retailers

15 retailers£530 GBP to £2,409 GBP

A
Cheapest Retailer
-
£530 GBP
A
Retailer 2
-
£577 GBP
View
A
Retailer 3
-
£593 GBP
View
Final sale: no returns
A
Retailer 4
-
£615 GBP
View
Retailer 5
-
£615 GBP
View
Price last confirmed 20 days ago
B+
Retailer 6
-
£713 GBP
View
B+
Retailer 7
-
£747 GBP
View
B+
Retailer 8
-
£841 GBP
View
B+
Retailer 9
-
£999 GBP
View
B
Retailer 10
-
£1,114 GBP
View
B+
Retailer 11
-
£1,248 GBP
View
B
Retailer 12
-
£1,515 GBP
View
B
Retailer 13
-
£1,730 GBP
View
B
Retailer 14
-
£2,120 GBP
View
Most Expensive
B
MOH London
LG508123877 · Nov 5
£2,409 GBP
View
14 more retailers have this diamond
Prices start from £530 GBPSave up to £1,879 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 Round
£530 GBP