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Round|Lab Grown|IGI

1.58ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG747511658

Shape and cutting style on the report: Round brilliant

Certificate IGI LG747511658

Diamond specifications and retailer prices

From £194 GBP
$260 USD
As of October 25, 2026
Save £583 GBP (75%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £777 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 1.58ct lab-grown round diamond

This 1.58ct 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 LG747511658 or 747511658. Listed at 12 retailers as of October 25, 2026, with prices from £194 to £777, a £583 spread on the same certified stone. MOH London lists it at £777. 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

1.58
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG747511658
Dimensions7.51 × 7.45 × 4.58 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.51 mm7.45 mm1.58 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG747511658
Side View
Table 58.0%Crown 35.4°Girdle: MediumPavilion 40.6°Culet: NoneDepth 61.2%

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 25
Current: £777 GBP|Low: £194 GBP|High: £786 GBP|Avg: £449 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 7£194 GBP
Retailer 2£321 GBP
Retailer 8£333 GBP
Retailer 3£357 GBP
Retailer 10£369 GBP
Retailer 9£387 GBP
Retailer 5£503 GBP
Retailer 4£537 GBP
Retailer 6£672 GBP
MOH London£777 GBP

43 data points across 10 retailers

12 retailers£194 GBP to £777 GBP

A
Cheapest Retailer
-
£194 GBP
$260 USD
A
Retailer 2
-
£321 GBP
€409 EUR
View
B+
Retailer 3
-
£333 GBP
$446 USD
View
A
Retailer 4
-
£357 GBP
View
A
Retailer 5
-
£369 GBP
$494 USD
View
B+
Retailer 6
-
£387 GBP
$518 USD
View
B+
Retailer 7
-
£503 GBP
$674 USD
View
B+
Retailer 8
-
£537 GBP
$720 USD
View
Retailer 9
-
£545 GBP
$730 USD
View
Price last confirmed 13 days ago
B
Retailer 10
-
£662 GBP
$887 USD
View
B
Retailer 11
-
£672 GBP
$900 USD
View
Most Expensive
B
MOH London
LG747511658 · Oct 26
£777 GBP
View
11 more retailers have this diamond
Prices start from £194 GBPSave up to £583 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
1.58ct Round
£194 GBP