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Round|Lab Grown|IGI

1.54ct I SI1 Round Lab Grown Diamond

ID • I/SI1 • IGI LG436073913

Shape and cutting style on the report: Round brilliant

Certificate IGI LG436073913

Diamond specifications and retailer prices

From £632 GBP
As of November 5, 2026
Save £2,806 GBP (82%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £3,438 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.54ct lab-grown round diamond

This 1.54ct lab-grown round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436073913 or 436073913. Listed at 12 retailers as of November 5, 2026, with prices from £632 to £3,438, a £2,806 spread on the same certified stone. MOH London lists it at £3,438. 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

1.54
Carat
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436073913
Dimensions7.40 × 7.38 × 4.54 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.40 mm7.38 mm1.54 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG436073913
Side View
Table 59.5%Crown 36.1°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 61.4%

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: £3,438 GBP|Low: £632 GBP|High: £3,493 GBP|Avg: £1,639 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
Retailer 14
November 5, 2026
Retailer 7£632 GBP
Retailer 8£1,040 GBP
Retailer 11£1,132 GBP
Retailer 13£1,165 GBP
Retailer 9£1,207 GBP
Retailer 14£1,207 GBP
Retailer 3£1,334 GBP
Retailer 6£1,384 GBP
Retailer 5£1,648 GBP
Retailer 10£1,905 GBP
Retailer 2£2,169 GBP
Retailer 4£2,190 GBP
Retailer 12£2,262 GBP
MOH London£3,438 GBP

38 data points across 14 retailers

12 retailers£632 GBP to £3,438 GBP

A
Cheapest Retailer
-
£632 GBP
B+
Retailer 2
-
£1,040 GBP
View
B+
Retailer 3
-
£1,132 GBP
View
B+
Retailer 4
-
£1,165 GBP
View
Final sale: no returns
Retailer 5
-
£1,207 GBP
View
Price last confirmed 25 days ago
B+
Retailer 6
-
£1,207 GBP
View
B+
Retailer 7
-
£1,334 GBP
View
B
Retailer 8
-
£1,905 GBP
View
B
Retailer 9
-
£2,169 GBP
View
B
Retailer 10
-
£2,190 GBP
View
B
Retailer 11
-
£2,262 GBP
View
Most Expensive
B
MOH London
LG436073913 · Nov 5
£3,438 GBP
View
11 more retailers have this diamond
Prices start from £632 GBPSave up to £2,806 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
1.54ct Round
£632 GBP