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Radiant|Lab Grown|IGI

1.66ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG844602074

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

Certificate IGI LG844602074

Diamond specifications and retailer prices

From €249 EUR
$279 USD
As of November 2, 2026
Save €2,774 EUR (92%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €3,022 EUR at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

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 D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG844602074 or 844602074. Listed at 18 retailers as of November 2, 2026, with prices from €249 to €3,022, a €2,774 spread on the same certified stone. Brilliant Earth lists it at €3,022. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.66
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46°
Pavilion angle33.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG844602074
Dimensions8.51 × 5.78 × 3.86 mm
L/W Ratio1.47
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
8.51 mm5.78 mm1.66 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG844602074
Side View
Table 66.0%Crown 46°Girdle: Slightly ThickPavilion 33.5°Culet: NoneDepth 66.8%

Caratlytics Score

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A+
Exceptional
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 2
Current: €3,022 EUR|Low: €249 EUR|High: €3,406 EUR|Avg: €1,183 EUR|-11.3%
Brilliant Earth
Retailer 2
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Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
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Retailer 17
Retailer 18
November 2, 2026
Retailer 15€249 EUR
Retailer 6€288 EUR
Retailer 2€360 EUR
Retailer 12€450 EUR
Retailer 16€466 EUR
Retailer 3€509 EUR
Retailer 11€565 EUR
Retailer 14€793 EUR
Retailer 8€843 EUR
Retailer 18€947 EUR
Retailer 5€975 EUR
Retailer 4€1,093 EUR
Retailer 10€1,275 EUR
Retailer 13€1,370 EUR
Retailer 17€2,211 EUR
Retailer 9€2,563 EUR
Retailer 7€2,787 EUR
Brilliant Earth€3,022 EUR

18 data points across 18 retailers

18 retailers€249 EUR to €3,022 EUR

A+
Cheapest Retailer
-
€249 EUR
$279 USD
A
Retailer 2
-
€288 EUR
$323 USD
View
A
Retailer 3
-
€360 EUR
£318 GBP
View
A
Retailer 4
-
€450 EUR
$505 USD
View
A
Retailer 5
-
€466 EUR
$523 USD
View
A
Retailer 6
-
€509 EUR
$571 USD
View
A
Retailer 7
-
€565 EUR
View
A
Retailer 8
-
€793 EUR
A$1,368 AUD
View
A
Retailer 9
-
€843 EUR
$946 USD
View
A
Retailer 10
-
€947 EUR
$1,062 USD
View
A
Retailer 11
-
€975 EUR
$1,093 USD
View
B+
Retailer 12
-
€1,093 EUR
$1,226 USD
View
Retailer 13
-
€1,275 EUR
$1,430 USD
View
Price last confirmed 17 days ago
B+
Retailer 14
-
€1,370 EUR
£1,210 GBP
View
B
Retailer 15
-
€2,211 EUR
$2,480 USD
View
B
Retailer 16
-
€2,563 EUR
$2,875 USD
View
B
Retailer 17
-
€2,787 EUR
$3,126 USD
View
Most Expensive
B
Brilliant Earth
22166202Y · Nov 2
€3,022 EUR
$3,390 USD
View
17 more retailers have this diamond
Prices start from €249 EURSave up to €2,774 EUR

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+
1.66ct Radiant
€249 EUR