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Round|Lab Grown|IGI

1.39ct I SI2 Round Lab Grown Diamond

ID • I/SI2 • IGI LG425066377

Shape and cutting style on the report: Round brilliant

Certificate IGI LG425066377

Diamond specifications and retailer prices

From £519 GBP
As of November 5, 2026
Save £1,842 GBP (78%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £2,361 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.39ct lab-grown round diamond

This 1.39ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG425066377 or 425066377. Listed at 10 retailers as of November 5, 2026, with prices from £519 to £2,361, a £1,842 spread on the same certified stone. MOH London lists it at £2,361. 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

1.39
Carat
I
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG425066377
Dimensions7.24 × 7.17 × 4.38 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.24 mm7.17 mm1.39 ctI / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG425066377
Side View
Table 55.0%Crown 33°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 61.0%

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: £2,361 GBP|Low: £499 GBP|High: £2,396 GBP|Avg: £1,001 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 5, 2026
Retailer 7£519 GBP
Retailer 10£565 GBP
Retailer 12£582 GBP
Retailer 2£602 GBP
Retailer 8£603 GBP
Retailer 13£603 GBP
Retailer 4£611 GBP
Retailer 3£964 GBP
Retailer 9£980 GBP
Retailer 5£1,349 GBP
Retailer 6£1,485 GBP
Retailer 11£1,695 GBP
MOH London£2,361 GBP

15 data points across 13 retailers

10 retailers£519 GBP to £2,361 GBP

A
Cheapest Retailer
-
£519 GBP
A
Retailer 2
-
£565 GBP
View
A
Retailer 3
-
£582 GBP
View
Final sale: no returns
A
Retailer 4
-
£602 GBP
View
A
Retailer 5
-
£603 GBP
View
Retailer 6
-
£603 GBP
View
Price last confirmed 25 days ago
B
Retailer 7
-
£980 GBP
View
B
Retailer 8
-
£1,485 GBP
View
B
Retailer 9
-
£1,695 GBP
View
Most Expensive
B
MOH London
LG425066377 · Nov 5
£2,361 GBP
View
9 more retailers have this diamond
Prices start from £519 GBPSave up to £1,842 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
1.39ct Round
£519 GBP