Oval|Lab Grown|IGI

1.58ct D SI1 Oval Lab Grown Diamond

D/SI1

Diamond specifications and retailer prices

From £412 GBP

A$849 AUD

As of October 28, 2026

2 retailers carry this diamond

Most expensive: £412 GBP at MoiMoi Australia

View at MoiMoi Australia

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) and certified by IGI. Listed at 2 retailers as of October 28, 2026. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.58

Carat

Colour

SI1

Clarity

Cut

Specifications

Cut

PolishExcellent

SymmetryExcellent

FluorescenceNone

OriginLab Grown

Grading LabIGI

Dimensions9.27 × 6.59 × 4.18 mm

L/W Ratio1.41

Top View

OriginLab Grown

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI

Side View

Caratlytics Score

How it works →

B+

Very Good

Strong quality and value balance

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Price History

Last verified: Oct 28

Current: £412 GBP|Low: £122 GBP|High: £413 GBP|Avg: £196 GBP|-0.2%

MoiMoi Australia

Retailer 2

Retailer 3

October 28, 2026

Retailer 3£122 GBP

Retailer 2£251 GBP

MoiMoi Australia£412 GBP

23 data points across 3 retailers

2 retailers

Retailer 1

£251 GBP

Price last confirmed 13 days ago

Most Expensive

B+

MoiMoi Australia

611932225 · Oct 28

£412 GBP

A$849 AUD

View

1 more retailer has this diamond

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.

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1.58ct Oval

£412 GBP