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Radiant|Lab Grown|IGI

1.83ct F SI1 Radiant Lab Grown Diamond

EX • F/SI1 • IGI LG847642379

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG847642379

Diamond specifications and retailer prices

From $566 AUD
£312 GBP
As of October 27, 2026
2 retailers carry this diamond
Most expensive: $1,941 AUD at Brilliant Earth · As of October 26, 2026
View at Brilliant Earth

About this 1.83ct lab-grown radiant diamond

This 1.83ct lab-grown radiant sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG847642379 or 847642379. Listed at 2 retailers as of October 26, 2026. 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

1.83
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.3°
Pavilion angle34.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG847642379
Dimensions8.72 × 5.98 × 4.03 mm
L/W Ratio1.46
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.72 mm5.98 mm1.83 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG847642379
Side View
Table 65.0%Crown 47.3°Girdle: MediumPavilion 34.3°Culet: NoneDepth 67.4%

Caratlytics Score

No score right now
No retailer has confirmed this stone recently, so we are not scoring it. Prices below are as of the date shown.

Price History

Last verified: Oct 27
Current: $1,941 AUD|Low: $278 AUD|High: $1,941 AUD|Avg: $1,148 AUD
Brilliant Earth
Retailer 2
Retailer 3
October 28, 2026
Retailer 2$278 AUD
Retailer 3$566 AUD
Brilliant Earth$1,941 AUD

4 data points across 3 retailers

2 retailers$566 AUD to $1,941 AUD

Retailer 1
-
$566 AUD
£312 GBP
Price last confirmed 7 days ago
Most Expensive
Brilliant Earth
22227176A · Oct 26
$1,941 AUD
$1,360 USD
View
Price last confirmed 7 days ago
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.

1.83ct Radiant
$566 AUD