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Radiant|Lab Grown|IGI

1.80ct F SI1 Radiant Lab Grown Diamond

ID • F/SI1 • IGI LG577399386

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

Certificate IGI LG577399386

Diamond specifications and retailer prices

From $586 AUD
$411 USD
As of November 1, 2026
Save $1,368 AUD (70%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,955 AUD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.8ct lab-grown radiant diamond

This 1.8ct 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 LG577399386 or 577399386. Listed at 11 retailers as of November 1, 2026, with prices from $586 to $1,955, a $1,368 spread on the same certified stone. Brilliant Earth lists it at $1,955. 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
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.2°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG577399386
Dimensions8.76 × 5.92 × 4.04 mm
L/W Ratio1.48
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.76 mm5.92 mm1.80 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG577399386
Side View
Table 66.0%Crown 43.2°Girdle: MediumPavilion 35.1°Culet: NoneDepth 68.2%

Caratlytics Score

How it works →
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: Nov 1
Current: $1,955 AUD|Low: $301 AUD|High: $2,026 AUD|Avg: $924 AUD|-3.5%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 3$301 AUD
Retailer 11$334 AUD
Retailer 10$586 AUD
Retailer 5$598 AUD
Retailer 2$602 AUD
Retailer 9$826 AUD
Retailer 8$883 AUD
Retailer 6$1,077 AUD
Retailer 4$1,562 AUD
Retailer 7$1,562 AUD
Brilliant Earth$1,955 AUD

37 data points across 11 retailers

11 retailers$586 AUD to $1,955 AUD

Retailer 1
-
$312 AUD
$219 USD
Price last confirmed 36 days ago
Retailer 2
-
$330 AUD
$231 USD
View
Price last confirmed 36 days ago
B+
Retailer 3
-
$586 AUD
$411 USD
View
A
Retailer 4
-
$598 AUD
€399 EUR
View
A
Retailer 5
-
$602 AUD
£332 GBP
View
A
Retailer 6
-
$826 AUD
$579 USD
View
A
Retailer 7
-
$883 AUD
$619 USD
View
B+
Retailer 8
-
$1,077 AUD
$755 USD
View
B+
Retailer 9
-
$1,562 AUD
£862 GBP
View
B
Retailer 10
-
$1,562 AUD
$1,095 USD
View
Most Expensive
B
Brilliant Earth
7624068A · Nov 2
$1,955 AUD
$1,370 USD
View
10 more retailers have this diamond
Prices start from $586 AUDSave up to $1,368 AUD

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
1.80ct Radiant
$586 AUD