CaratHunter
Plans
Round|Lab Grown|IGI

1.30ct J SI2 Round Lab Grown Diamond

EX • J/SI2 • IGI LG474127291

Shape and cutting style on the report: Round brilliant

Certificate IGI LG474127291

Diamond specifications and retailer prices

From £429 GBP
As of November 5, 2026
Save £1,875 GBP (81%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £2,304 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.3ct lab-grown round diamond

This 1.3ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG474127291 or 474127291. Listed at 10 retailers as of November 5, 2026, with prices from £429 to £2,304, a £1,875 spread on the same certified stone. MOH London lists it at £2,304. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.30
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.6°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG474127291
Dimensions7.07 × 7.11 × 4.27 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
7.07 mm7.11 mm1.30 ctJ / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG474127291
Side View
Table 60.5%Crown 31.6°GirdlePavilion 41.5°Culet: NoneDepth 60.1%

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: £2,304 GBP|Low: £343 GBP|High: £2,338 GBP|Avg: £916 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 4£429 GBP
Retailer 7£481 GBP
Retailer 5£532 GBP
Retailer 8£532 GBP
Retailer 2£550 GBP
Retailer 6£819 GBP
Retailer 9£854 GBP
Retailer 10£1,114 GBP
Retailer 3£1,321 GBP
MOH London£2,304 GBP

16 data points across 10 retailers

10 retailers£429 GBP to £2,304 GBP

A
Cheapest Retailer
-
£429 GBP
B+
Retailer 2
-
£481 GBP
View
Final sale: no returns
B+
Retailer 3
-
£481 GBP
View
Retailer 4
-
£532 GBP
View
Price last confirmed 21 days ago
B+
Retailer 5
-
£532 GBP
View
B+
Retailer 6
-
£550 GBP
View
B
Retailer 7
-
£819 GBP
View
B
Retailer 8
-
£1,321 GBP
View
B
Retailer 9
-
£1,400 GBP
View
Most Expensive
B
MOH London
LG474127291 · Nov 5
£2,304 GBP
View
9 more retailers have this diamond
Prices start from £429 GBPSave up to £1,875 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
1.30ct Round
£429 GBP