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1.66ct H SI1 Round Lab Grown Diamond

EX • H/SI1 • IGI LG447067442

Shape and cutting style on the report: Round brilliant

Certificate IGI LG447067442

Diamond specifications and retailer prices

From $612 USD
As of November 2, 2026
1 retailer carries this diamond
Only listing: $612 USD at B2C Jewels
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 B2C Jewels

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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG447067442 or 447067442. Listed at a single retailer as of November 2, 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
H
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG447067442
Dimensions7.60 × 7.53 × 4.73 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Chemical Vapor Deposition (CVD) laboratory grown diamond is classified as Type IIa
Top View
7.60 mm7.53 mm1.66 ctH / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG447067442
Side View
Table 58.5%Crown 35.5°Girdle: MED-STKPavilion 41.5°Culet: NoneDepth 62.4%

Caratlytics Score

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

Last verified: Nov 2
Current: $612 USD|Low: $590 USD|High: $1,058 USD|Avg: $896 USD|+3.7%
B2C Jewels
Retailer 2
Retailer 3
September 23, 2026
B2C Jewels$612 USD
Retailer 3$811 USD
Retailer 2$1,036 USD

15 data points across 3 retailers

1 retailer

B+
B2C Jewels
20578200 · Nov 2
$612 USD
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B+
1.66ct Round
$612 USD