CaratHunter
Plans
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 $411 USD
As of November 1, 2026
Save $959 USD (70%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,370 USD at Brilliant Earth · As of October 31, 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 October 31, 2026, with prices from $411 to $1,370, a $959 spread on the same certified stone. Brilliant Earth lists it at $1,370. 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
Color
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $1,370 USD|Low: $211 USD|High: $1,430 USD|Avg: $648 USD|-4.2%
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$211 USD
Retailer 11$234 USD
Retailer 10$411 USD
Retailer 5$419 USD
Retailer 2$422 USD
Retailer 9$579 USD
Retailer 8$619 USD
Retailer 6$755 USD
Retailer 4$1,095 USD
Retailer 7$1,095 USD
Brilliant Earth$1,370 USD

38 data points across 11 retailers

11 retailers$411 USD to $1,370 USD

Retailer 1
-
$219 USD
Price last confirmed 35 days ago
Retailer 2
-
$231 USD
View
Price last confirmed 35 days ago
B+
Retailer 3
-
$411 USD
View
A
Retailer 4
-
$419 USD
€399 EUR
View
A
Retailer 5
-
$422 USD
£332 GBP
View
A
Retailer 6
-
$579 USD
View
A
Retailer 7
-
$619 USD
View
B+
Retailer 8
-
$755 USD
View
B+
Retailer 9
-
$1,095 USD
£862 GBP
View
B
Retailer 10
-
$1,095 USD
View
Most Expensive
B
Brilliant Earth
7624068A · Oct 31
$1,370 USD
View
10 more retailers have this diamond
Prices start from $411 USDSave up to $959 USD

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
$411 USD