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Round|Lab Grown|IGI

1.53ct G SI1 Round Lab Grown Diamond

EX • G/SI1 • IGI LG781631509

Shape and cutting style on the report: Round brilliant

Certificate IGI LG781631509

Diamond specifications and retailer prices

From £142 GBP
$190 USD
As of October 29, 2026
Save £689 GBP (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £830 GBP at MOH London · As of October 29, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG781631509 or 781631509. Listed at 19 retailers as of October 29, 2026, with prices from £142 to £830, a £689 spread on the same certified stone. MOH London lists it at £830. 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
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG781631509
Dimensions7.50 × 7.47 × 4.45 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.50 mm7.47 mm1.53 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG781631509
Side View
Table 62.0%Crown 32.9°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 59.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £830 GBP|Low: £140 GBP|High: £851 GBP|Avg: £406 GBP|-1.2%
MOH London
Retailer 2
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Retailer 6
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Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 16
October 31, 2026
Retailer 4£142 GBP
Retailer 14£157 GBP
Retailer 13£164 GBP
Retailer 2£175 GBP
Retailer 5£177 GBP
Retailer 15£308 GBP
Retailer 9£318 GBP
Retailer 6£345 GBP
Retailer 12£425 GBP
Retailer 11£451 GBP
Retailer 7£537 GBP
Retailer 10£564 GBP
Retailer 16£573 GBP
Retailer 3£605 GBP
Retailer 8£649 GBP
MOH London£830 GBP

33 data points across 16 retailers

19 retailers£142 GBP to £830 GBP

A
Cheapest Retailer
-
£142 GBP
$190 USD
Retailer 2
-
£142 GBP
$190 USD
View
Price last confirmed 43 days ago
A
Retailer 3
-
£157 GBP
$211 USD
View
Final sale: no returns
A
Retailer 4
-
£164 GBP
$220 USD
View
Retailer 5
-
£173 GBP
$232 USD
View
Price last confirmed 42 days ago
A
Retailer 6
-
£175 GBP
$235 USD
View
A
Retailer 7
-
£177 GBP
$237 USD
View
B+
Retailer 8
-
£308 GBP
$413 USD
View
A
Retailer 9
-
£318 GBP
View
A
Retailer 10
-
£345 GBP
$462 USD
View
B+
Retailer 11
-
£425 GBP
$569 USD
View
B+
Retailer 12
-
£451 GBP
$604 USD
View
Retailer 13
-
£537 GBP
$720 USD
View
Price last confirmed 10 days ago
B+
Retailer 14
-
£564 GBP
$756 USD
View
Retailer 15
-
£564 GBP
$756 USD
View
Price last confirmed 40 days ago
B+
Retailer 16
-
£573 GBP
SGD 1,037 SGD
View
B+
Retailer 17
-
£605 GBP
$810 USD
View
B
Retailer 18
-
£649 GBP
$870 USD
View
Most Expensive
B
MOH London
LG781631509 · Oct 29
£830 GBP
View
18 more retailers have this diamond
Prices start from £142 GBPSave up to £689 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
£142 GBP