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Round|Lab Grown|IGI

1.43ct I SI2 Round Lab Grown Diamond

EX • I/SI2 • IGI LG436046485

Shape and cutting style on the report: Round brilliant

Certificate IGI LG436046485

Diamond specifications and retailer prices

From £534 GBP
As of November 5, 2026
Save £1,892 GBP (78%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £2,426 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.43ct lab-grown round diamond

This 1.43ct 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 LG436046485 or 436046485. Listed at 10 retailers as of November 5, 2026, with prices from £534 to £2,426, a £1,892 spread on the same certified stone. MOH London lists it at £2,426. 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

1.43
Carat
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436046485
Dimensions7.27 × 7.24 × 4.40 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.27 mm7.24 mm1.43 ctI / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG436046485
Side View
Table 60.5%Crown 34.1°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 60.6%

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: £2,426 GBP|Low: £513 GBP|High: £2,466 GBP|Avg: £1,055 GBP|-1.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 6£534 GBP
Retailer 9£581 GBP
Retailer 11£598 GBP
Retailer 2£602 GBP
Retailer 7£620 GBP
Retailer 3£635 GBP
Retailer 12£987 GBP
Retailer 8£1,005 GBP
Retailer 4£1,386 GBP
Retailer 5£1,526 GBP
Retailer 10£1,742 GBP
MOH London£2,426 GBP

17 data points across 12 retailers

10 retailers£534 GBP to £2,426 GBP

A
Cheapest Retailer
-
£534 GBP
A
Retailer 2
-
£581 GBP
View
A
Retailer 3
-
£598 GBP
View
Final sale: no returns
A
Retailer 4
-
£602 GBP
View
A
Retailer 5
-
£620 GBP
View
Retailer 6
-
£620 GBP
View
Price last confirmed 25 days ago
B
Retailer 7
-
£1,005 GBP
View
B
Retailer 8
-
£1,526 GBP
View
B
Retailer 9
-
£1,742 GBP
View
Most Expensive
B
MOH London
LG436046485 · Nov 5
£2,426 GBP
View
9 more retailers have this diamond
Prices start from £534 GBPSave up to £1,892 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
1.43ct Round
£534 GBP