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Oval|Lab Grown|IGI

1.58ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG843611476

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG843611476

Diamond specifications and retailer prices

From £221 GBP
As of October 30, 2026
Save £577 GBP (72%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £820 GBP at Michael Trio · As of October 13, 2026
View at Michael Trio

About this 1.58ct lab-grown oval diamond

This 1.58ct lab-grown oval sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG843611476 or 843611476. Listed at 7 retailers as of October 29, 2026, with a 261% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.2°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843611476
Dimensions9.65 × 6.58 × 4.04 mm
L/W Ratio1.47
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.65 mm6.58 mm1.58 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843611476
Side View
Table 56.0%Crown 32.2°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.4%

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 30
Current: £820 GBP|Low: £220 GBP|High: £820 GBP|Avg: £468 GBP
Michael Trio
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 2£221 GBP
Retailer 7£267 GBP
Retailer 8£339 GBP
Retailer 3£367 GBP
Retailer 5£400 GBP
Retailer 6£639 GBP
Retailer 4£798 GBP
Michael Trio£820 GBP

17 data points across 8 retailers

7 retailers£221 GBP to £798 GBP

A
Cheapest Retailer
-
£221 GBP
B+
Retailer 2
-
£267 GBP
$358 USD
View
A
Retailer 3
-
£367 GBP
View
A
Retailer 4
-
£400 GBP
$536 USD
View
B+
Retailer 5
-
£639 GBP
$856 USD
View
B
Retailer 6
-
£798 GBP
View
Most Expensive
Michael Trio
1849293169 · Oct 13
£820 GBP
SGD 1,485 SGD
View
Price last confirmed 17 days ago
6 more retailers have this diamond
Prices start from £221 GBPSave up to £577 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 Oval
£221 GBP