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Radiant|Lab Grown|IGI

1.73ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG821651606

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

Certificate IGI LG821651606

Diamond specifications and retailer prices

From €376 EUR
$420 USD
As of November 1, 2026
Save €1,472 EUR (80%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €1,848 EUR at Michael Trio · As of November 1, 2026
View at Michael Trio

About this 1.73ct lab-grown radiant diamond

This 1.73ct 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 LG821651606 or 821651606. Listed at 15 retailers as of November 1, 2026, with prices from €376 to €1,848, a €1,472 spread on the same certified stone. Michael Trio lists it at €1,848. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.73
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42°
Pavilion angle31.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821651606
Dimensions9.17 × 5.71 × 3.73 mm
L/W Ratio1.61
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.17 mm5.71 mm1.73 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821651606
Side View
Table 67.0%Crown 42°Girdle: Slightly ThickPavilion 31.8°Culet: NoneDepth 65.3%

Caratlytics Score

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A
Excellent
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 1
Current: €1,848 EUR|Low: €376 EUR|High: €1,879 EUR|Avg: €934 EUR|-1.7%
Michael Trio
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 1, 2026
Retailer 2€376 EUR
Retailer 7€441 EUR
Retailer 3€550 EUR
Retailer 11€559 EUR
Retailer 10€641 EUR
Retailer 6€718 EUR
Retailer 8€753 EUR
Retailer 4€970 EUR
Retailer 12€1,169 EUR
Retailer 13€1,175 EUR
Retailer 14€1,374 EUR
Retailer 9€1,559 EUR
Retailer 5€1,643 EUR
Michael Trio€1,848 EUR

20 data points across 14 retailers

15 retailers€376 EUR to €1,848 EUR

A
Cheapest Retailer
-
€376 EUR
$420 USD
Final sale: no returns
A
Retailer 2
-
€441 EUR
£388 GBP
View
A
Retailer 3
-
€550 EUR
$615 USD
View
A
Retailer 4
-
€559 EUR
$625 USD
View
A
Retailer 5
-
€641 EUR
View
A
Retailer 6
-
€718 EUR
ZAR 12,965 ZAR
View
A
Retailer 7
-
€753 EUR
£662 GBP
View
A
Retailer 8
-
€970 EUR
A$1,667 AUD
View
B+
Retailer 9
-
€1,169 EUR
$1,306 USD
View
B+
Retailer 10
-
€1,175 EUR
$1,313 USD
View
B+
Retailer 11
-
€1,374 EUR
$1,535 USD
View
B+
Retailer 12
-
€1,559 EUR
$1,742 USD
View
B+
Retailer 13
-
€1,643 EUR
£1,445 GBP
View
Retailer 14
-
€1,741 EUR
A$2,992 AUD
View
Price last confirmed 24 days ago
Most Expensive
B+
Michael Trio
2037643848 · Nov 1
€1,848 EUR
SGD 2,790 SGD
View
14 more retailers have this diamond
Prices start from €376 EURSave up to €1,472 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
1.73ct Radiant
€376 EUR