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Radiant|Lab Grown|IGI

1.66ct G SI1 Radiant Lab Grown Diamond

ID • G/SI1 • IGI LG546205668

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

Certificate IGI LG546205668

Diamond specifications and retailer prices

From $1,745 NZD
£773 GBP
As of November 2, 2026
1 retailer carries this diamond
Only listing: $1,745 NZD at Diamond Quarter
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 Diamond Quarter

About this 1.66ct lab-grown radiant diamond

This 1.66ct lab-grown radiant sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG546205668 or 546205668. 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
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.9°
Pavilion angle36.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG546205668
Dimensions8.13 × 5.74 × 4.07 mm
L/W Ratio1.42
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
8.13 mm5.74 mm1.66 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG546205668
Side View
Table 64.0%Crown 46.9°Girdle: MED-STKPavilion 36.5°Culet: NoneDepth 70.9%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 2
Current: $1,068 NZD|Low: $721 NZD|High: $3,075 NZD|Avg: $1,533 NZD|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
March 23, 2026
Retailer 5$721 NZD
Retailer 8$919 NZD
Retailer 1$1,068 NZD
Retailer 2$1,173 NZD
Retailer 4$1,342 NZD
Retailer 7$1,662 NZD
Retailer 6$2,666 NZD
Retailer 3$2,790 NZD

31 data points across 8 retailers

1 retailer

B
Diamond Quarter
1.66SI1GLG680FEBN · Nov 2
$1,745 NZD
£773 GBP
View

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.

B
1.66ct Radiant
$1,745 NZD