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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 $601 AUD
$422 USD
As of October 30, 2026
Save $2,338 AUD (80%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,939 AUD 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 October 30, 2026, with prices from $601 to $2,939, a $2,338 spread on the same certified stone. Michael Trio lists it at $2,939. 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: Oct 30
Current: $2,939 AUD|Low: $601 AUD|High: $2,989 AUD|Avg: $1,487 AUD|-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 5$601 AUD
Retailer 2$701 AUD
Retailer 14$876 AUD
Retailer 10$890 AUD
Retailer 9$1,019 AUD
Retailer 6$1,142 AUD
Retailer 7$1,198 AUD
Retailer 3$1,543 AUD
Retailer 11$1,859 AUD
Retailer 12$1,869 AUD
Retailer 13$2,185 AUD
Retailer 8$2,480 AUD
Retailer 4$2,613 AUD
Michael Trio$2,939 AUD

20 data points across 14 retailers

15 retailers$601 AUD to $2,939 AUD

A
Cheapest Retailer
-
$601 AUD
$422 USD
Final sale: no returns
A
Retailer 2
-
$701 AUD
£388 GBP
View
A
Retailer 3
-
$876 AUD
$615 USD
View
A
Retailer 4
-
$890 AUD
$625 USD
View
A
Retailer 5
-
$1,019 AUD
€682 EUR
View
A
Retailer 6
-
$1,142 AUD
ZAR 12,965 ZAR
View
A
Retailer 7
-
$1,198 AUD
£662 GBP
View
A
Retailer 8
-
$1,543 AUD
View
B+
Retailer 9
-
$1,859 AUD
$1,306 USD
View
B+
Retailer 10
-
$1,869 AUD
$1,313 USD
View
B+
Retailer 11
-
$2,185 AUD
$1,535 USD
View
B+
Retailer 12
-
$2,480 AUD
$1,742 USD
View
B+
Retailer 13
-
$2,613 AUD
£1,445 GBP
View
Retailer 14
-
$2,769 AUD
View
Price last confirmed 24 days ago
Most Expensive
B+
Michael Trio
2037643848 · Nov 1
$2,939 AUD
SGD 2,790 SGD
View
14 more retailers have this diamond
Prices start from $601 AUDSave up to $2,338 AUD

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
$601 AUD