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Round|Lab Grown|IGI

3.05ct J VS1 Round Lab Grown Diamond

ID • J/VS1 • IGI LG508124003

Shape and cutting style on the report: Round brilliant

Certificate IGI LG508124003

Diamond specifications and retailer prices

From £432 GBP
As of November 5, 2026
Save £1,581 GBP (79%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £2,341 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 3.05ct lab-grown round diamond

This 3.05ct lab-grown round sits in the three to five carat band, graded J colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG508124003 or 508124003. Listed at 16 retailers as of November 5, 2026, with a 366% 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

3.05
Carat
J
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG508124003
Dimensions9.29 × 9.35 × 5.74 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
9.29 mm9.35 mm3.05 ctJ / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG508124003
Side View
Table 56.0%Crown 35.1°GirdlePavilion 40.7°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: £2,341 GBP|Low: £432 GBP|High: £2,357 GBP|Avg: £1,143 GBP|+0.5%
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
November 2, 2026
Retailer 9£432 GBP
Retailer 12£484 GBP
Retailer 4£580 GBP
Retailer 6£635 GBP
Retailer 11£740 GBP
Retailer 8£825 GBP
Retailer 13£871 GBP
Retailer 2£1,164 GBP
Retailer 5£1,210 GBP
Retailer 7£1,331 GBP
Retailer 3£1,736 GBP
Retailer 10£2,014 GBP
MOH London£2,341 GBP

25 data points across 13 retailers

16 retailers£432 GBP to £2,014 GBP

A
Cheapest Retailer
-
£432 GBP
A
Retailer 2
-
£484 GBP
View
Final sale: no returns
A
Retailer 3
-
£484 GBP
View
Retailer 4
-
£536 GBP
View
Price last confirmed 21 days ago
A
Retailer 5
-
£536 GBP
View
A
Retailer 6
-
£580 GBP
View
A
Retailer 7
-
£635 GBP
View
B+
Retailer 8
-
£740 GBP
View
B+
Retailer 9
-
£825 GBP
View
B+
Retailer 10
-
£871 GBP
View
B
Retailer 11
-
£1,164 GBP
View
B
Retailer 12
-
£1,331 GBP
View
B
Retailer 13
-
£1,411 GBP
View
B
Retailer 14
-
£1,736 GBP
View
B
Retailer 15
-
£2,014 GBP
View
Most Expensive
MOH London
LG508124003 · Oct 29
£2,341 GBP
View
Price last confirmed 7 days ago
15 more retailers have this diamond
Prices start from £432 GBPSave up to £1,581 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
3.05ct Round
£432 GBP