CaratHunter
Plans
Round|Lab Grown|IGI

1.66ct F SI2 Round Lab Grown Diamond

ID • F/SI2 • IGI LG596344678

Shape and cutting style on the report: Round brilliant

Certificate IGI LG596344678

Diamond specifications and retailer prices

From €927 EUR
$1,040 USD
As of October 26, 2026
1 retailer carries this diamond
Only listing: €927 EUR 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 1.66ct lab-grown round diamond

This 1.66ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG596344678 or 596344678. Listed at a single retailer as of October 26, 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

1.66
Carat
F
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG596344678
Dimensions7.63 × 7.61 × 4.62 mm
L/W Ratio1.00
Girdle conditionFaceted
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
7.63 mm7.61 mm1.66 ctF / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG596344678
Side View
Table 59.0%Crown 35°Girdle: MediumPavilion 40.7°Culet: NoneDepth 60.7%

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 26
Current: €927 EUR|Low: €927 EUR|High: €927 EUR|Avg: €927 EUR
December 30, 2025
Brilliant Earth€927 EUR

4 data points across 1 retailer

1 retailer

Brilliant Earth
8018438Y · Oct 26
€927 EUR
$1,040 USD
View
Price last confirmed 7 days ago

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.

1.66ct Round
€927 EUR