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Round|Lab Grown|IGI

1.53ct I SI1 Round Lab Grown Diamond

ID • I/SI1 • IGI LG440012026

Shape and cutting style on the report: Round brilliant

Certificate IGI LG440012026

Diamond specifications and retailer prices

From £632 GBP
As of November 5, 2026
Save £2,784 GBP (82%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £3,416 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.53ct lab-grown round diamond

This 1.53ct 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 LG440012026 or 440012026. Listed at 12 retailers as of November 5, 2026, with prices from £632 to £3,416, a £2,784 spread on the same certified stone. MOH London lists it at £3,416. 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

1.53
Carat
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG440012026
Dimensions7.40 × 7.43 × 4.49 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
undefined
Top View
7.40 mm7.43 mm1.53 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG440012026
Side View
Table 59.5%Crown 35°GirdlePavilion 40.3°Culet: NoneDepth 60.5%

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: £3,416 GBP|Low: £632 GBP|High: £3,466 GBP|Avg: £1,648 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 6£632 GBP
Retailer 7£1,033 GBP
Retailer 10£1,125 GBP
Retailer 12£1,158 GBP
Retailer 8£1,199 GBP
Retailer 13£1,199 GBP
Retailer 3£1,326 GBP
Retailer 5£1,638 GBP
Retailer 9£1,893 GBP
Retailer 2£2,155 GBP
Retailer 4£2,176 GBP
Retailer 11£2,248 GBP
MOH London£3,416 GBP

39 data points across 13 retailers

12 retailers£632 GBP to £3,416 GBP

A
Cheapest Retailer
-
£632 GBP
B+
Retailer 2
-
£1,033 GBP
View
B+
Retailer 3
-
£1,125 GBP
View
B+
Retailer 4
-
£1,158 GBP
View
Final sale: no returns
B+
Retailer 5
-
£1,199 GBP
View
Retailer 6
-
£1,199 GBP
View
Price last confirmed 25 days ago
B
Retailer 7
-
£1,326 GBP
View
B
Retailer 8
-
£1,893 GBP
View
B
Retailer 9
-
£2,155 GBP
View
B
Retailer 10
-
£2,176 GBP
View
B
Retailer 11
-
£2,248 GBP
View
Most Expensive
B
MOH London
LG440012026 · Nov 5
£3,416 GBP
View
11 more retailers have this diamond
Prices start from £632 GBPSave up to £2,784 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
1.53ct Round
£632 GBP