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Oval|Lab Grown|IGI

1.80ct J SI2 Oval Lab Grown Diamond

ID • J/SI2 • IGI LG451057946

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG451057946

Diamond specifications and retailer prices

From £694 GBP
$930 USD
As of October 29, 2026
1 retailer carries this diamond
Only listing: £694 GBP at Brilliant Earth
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Brilliant Earth

About this 1.8ct lab-grown oval diamond

This 1.8ct lab-grown oval sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451057946 or 451057946. Listed at a single retailer as of October 29, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

1.80
Carat
J
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle33.3°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451057946
Dimensions9.27 × 6.94 × 4.35 mm
L/W Ratio1.34
Girdle conditionFaceted
Cert comments
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Top View
9.27 mm6.94 mm1.80 ctJ / SI2
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG451057946
Side View
Table 57.5%Crown 33.3°Girdle: STK-THKPavilion 41.1°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 29
Current: £694 GBP|Low: £694 GBP|High: £2,370 GBP|Avg: £1,790 GBP|-50.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
June 13, 2026
Brilliant Earth£694 GBP
Retailer 2£766 GBP
Retailer 3£1,503 GBP
Retailer 4£1,650 GBP
Retailer 5£2,070 GBP
Retailer 6£2,370 GBP

12 data points across 6 retailers

1 retailer

B+
Brilliant Earth
8351428A · Oct 29
£694 GBP
$930 USD
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B+
1.80ct Oval
£694 GBP