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Round|Lab Grown|IGI

3.18ct J VS2 Round Lab Grown Diamond

ID • J/VS2 • IGI LG508124138

Shape and cutting style on the report: Round brilliant

Certificate IGI LG508124138

Diamond specifications and retailer prices

From £540 GBP
As of November 5, 2026
Save £1,619 GBP (75%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £2,464 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 3.18ct lab-grown round diamond

This 3.18ct 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 LG508124138 or 508124138. Listed at 15 retailers as of November 4, 2026, with a 300% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

3.18
Carat
J
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG508124138
Dimensions9.43 × 9.39 × 5.80 mm
L/W Ratio1.00
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
9.43 mm9.39 mm3.18 ctJ / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG508124138
Side View
Table 58.5%Crown 35.1°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 61.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £2,464 GBP|Low: £540 GBP|High: £2,493 GBP|Avg: £1,300 GBP|+0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 9£540 GBP
Retailer 11£604 GBP
Retailer 3£722 GBP
Retailer 6£758 GBP
Retailer 10£854 GBP
Retailer 8£1,015 GBP
Retailer 12£1,154 GBP
Retailer 4£1,172 GBP
Retailer 5£1,258 GBP
Retailer 2£1,263 GBP
Retailer 7£1,543 GBP
Retailer 13£2,159 GBP
MOH London£2,464 GBP

18 data points across 13 retailers

15 retailers£540 GBP to £2,159 GBP

A
Cheapest Retailer
-
£540 GBP
A
Retailer 2
-
£588 GBP
View
A
Retailer 3
-
£604 GBP
View
Final sale: no returns
A
Retailer 4
-
£626 GBP
View
Retailer 5
-
£626 GBP
View
Price last confirmed 20 days ago
A
Retailer 6
-
£722 GBP
View
A
Retailer 7
-
£758 GBP
View
B+
Retailer 8
-
£854 GBP
View
B+
Retailer 9
-
£1,015 GBP
View
B
Retailer 10
-
£1,154 GBP
View
B+
Retailer 11
-
£1,263 GBP
View
B
Retailer 12
-
£1,543 GBP
View
B
Retailer 13
-
£1,762 GBP
View
B
Retailer 14
-
£2,159 GBP
View
Most Expensive
MOH London
LG508124138 · Oct 26
£2,464 GBP
View
Price last confirmed 10 days ago
14 more retailers have this diamond
Prices start from £540 GBPSave up to £1,619 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
3.18ct Round
£540 GBP