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Radiant|Lab Grown|IGI

1.72ct F IF Radiant Lab Grown Diamond

GD • F/IF • IGI LG729503380

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

Certificate IGI LG729503380

Diamond specifications and retailer prices

From $422 AUD
As of October 30, 2026
Save $3,455 AUD (89%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $3,877 AUD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.72ct lab-grown radiant diamond

This 1.72ct lab-grown radiant sits in the one-and-a-half to two carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a standard cut grade and certified by IGI LG729503380 or 729503380. Listed at 22 retailers as of October 30, 2026, with prices from $422 to $3,877, a $3,455 spread on the same certified stone. Brilliant Earth lists it at $3,877. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.72
Carat
F
Colour
IF
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.2°
Pavilion angle37.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG729503380
Dimensions8.52 × 5.81 × 3.93 mm
L/W Ratio1.47
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.52 mm5.81 mm1.72 ctF / IF
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG729503380
Side View
Table 65.0%Crown 41.2°Girdle: MediumPavilion 37.2°Culet: NoneDepth 67.6%

Caratlytics Score

How it works →
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: $3,877 AUD|Low: $405 AUD|High: $5,531 AUD|Avg: $1,406 AUD|-29.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
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Retailer 11
Retailer 12
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Retailer 21
October 31, 2026
Retailer 4$422 AUD
Retailer 14$473 AUD
Retailer 12$490 AUD
Retailer 5$523 AUD
Retailer 10$523 AUD
Retailer 18$748 AUD
Retailer 2$838 AUD
Retailer 7$858 AUD
Retailer 17$899 AUD
Retailer 9$905 AUD
Retailer 13$928 AUD
Retailer 16$1,217 AUD
Retailer 20$1,349 AUD
Retailer 6$1,684 AUD
Retailer 11$1,752 AUD
Retailer 8$1,806 AUD
Retailer 21$1,869 AUD
Retailer 15$2,110 AUD
Retailer 3$2,231 AUD
Retailer 19$3,699 AUD
Brilliant Earth$3,877 AUD

36 data points across 21 retailers

22 retailers$422 AUD to $3,877 AUD

A
Cheapest Retailer
-
$422 AUD
Retailer 2
-
$490 AUD
View
Price last confirmed 8 days ago
Retailer 3
-
$523 AUD
View
Price last confirmed 11 days ago
A
Retailer 4
-
$523 AUD
View
A
Retailer 5
-
$748 AUD
View
A
Retailer 6
-
$838 AUD
View
B+
Retailer 7
-
$858 AUD
View
Retailer 8
-
$899 AUD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$905 AUD
View
A
Retailer 10
-
$928 AUD
View
Retailer 11
-
$1,217 AUD
View
Price last confirmed 8 days ago
B+
Retailer 12
-
$1,349 AUD
View
Retailer 13
-
$1,684 AUD
View
Price last confirmed 8 days ago
B
Retailer 14
-
$1,708 AUD
View
B
Retailer 15
-
$1,752 AUD
View
B+
Retailer 16
-
$1,806 AUD
View
B+
Retailer 17
-
$1,839 AUD
View
B+
Retailer 18
-
$1,869 AUD
View
Retailer 19
-
$2,110 AUD
View
Price last confirmed 7 days ago
B
Retailer 20
-
$2,231 AUD
View
Retailer 21
-
$3,699 AUD
View
Price last confirmed 18 days ago
Most Expensive
B
Brilliant Earth
21417112A · Oct 31
$3,877 AUD
$2,720 USD
View
21 more retailers have this diamond
Prices start from $422 AUDSave up to $3,455 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
1.72ct Radiant
$422 AUD