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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 $749 NZD
$422 USD
As of October 30, 2026
Save $2,914 NZD (80%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,663 NZD at Michael Trio · As of October 31, 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 $749 to $3,663, a $2,914 spread on the same certified stone. Michael Trio lists it at $3,663. 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: $3,663 NZD|Low: $749 NZD|High: $3,725 NZD|Avg: $1,846 NZD|-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
October 31, 2026
Retailer 5$749 NZD
Retailer 12$876 NZD
Retailer 14$1,091 NZD
Retailer 9$1,109 NZD
Retailer 7$1,271 NZD
Retailer 6$1,424 NZD
Retailer 8$1,493 NZD
Retailer 3$1,923 NZD
Retailer 10$2,317 NZD
Retailer 11$2,330 NZD
Retailer 13$2,723 NZD
Retailer 2$3,091 NZD
Retailer 4$3,256 NZD
Michael Trio$3,663 NZD

20 data points across 14 retailers

15 retailers$749 NZD to $3,663 NZD

A
Cheapest Retailer
-
$749 NZD
$422 USD
Final sale: no returns
A
Retailer 2
-
$876 NZD
£389 GBP
View
A
Retailer 3
-
$1,091 NZD
$615 USD
View
A
Retailer 4
-
$1,109 NZD
$625 USD
View
A
Retailer 5
-
$1,271 NZD
€682 EUR
View
A
Retailer 6
-
$1,424 NZD
ZAR 12,965 ZAR
View
A
Retailer 7
-
$1,493 NZD
£662 GBP
View
A
Retailer 8
-
$1,923 NZD
A$1,667 AUD
View
B+
Retailer 9
-
$2,317 NZD
$1,306 USD
View
B+
Retailer 10
-
$2,330 NZD
$1,313 USD
View
B+
Retailer 11
-
$2,723 NZD
$1,535 USD
View
B+
Retailer 12
-
$3,091 NZD
$1,742 USD
View
B+
Retailer 13
-
$3,256 NZD
£1,445 GBP
View
Retailer 14
-
$3,451 NZD
A$2,992 AUD
View
Price last confirmed 24 days ago
Most Expensive
B+
Michael Trio
2037643848 · Oct 31
$3,663 NZD
SGD 2,790 SGD
View
14 more retailers have this diamond
Prices start from $749 NZDSave up to $2,914 NZD

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
$749 NZD