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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 $525 NZD
As of October 30, 2026
Save $4,300 NZD (89%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $4,825 NZD 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 $525 to $4,825, a $4,300 spread on the same certified stone. Brilliant Earth lists it at $4,825. 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: $4,825 NZD|Low: $504 NZD|High: $6,883 NZD|Avg: $1,749 NZD|-29.9%
Brilliant Earth
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
October 31, 2026
Retailer 4$525 NZD
Retailer 14$589 NZD
Retailer 12$610 NZD
Retailer 5$651 NZD
Retailer 10$651 NZD
Retailer 18$931 NZD
Retailer 2$1,043 NZD
Retailer 7$1,068 NZD
Retailer 17$1,119 NZD
Retailer 9$1,126 NZD
Retailer 13$1,155 NZD
Retailer 16$1,515 NZD
Retailer 20$1,678 NZD
Retailer 6$2,095 NZD
Retailer 11$2,180 NZD
Retailer 8$2,248 NZD
Retailer 21$2,326 NZD
Retailer 15$2,626 NZD
Retailer 3$2,776 NZD
Retailer 19$4,604 NZD
Brilliant Earth$4,825 NZD

36 data points across 21 retailers

22 retailers$525 NZD to $4,825 NZD

A
Cheapest Retailer
-
$525 NZD
Retailer 2
-
$610 NZD
View
Price last confirmed 8 days ago
Retailer 3
-
$651 NZD
View
Price last confirmed 11 days ago
A
Retailer 4
-
$651 NZD
View
A
Retailer 5
-
$931 NZD
View
A
Retailer 6
-
$1,043 NZD
View
B+
Retailer 7
-
$1,068 NZD
View
Retailer 8
-
$1,119 NZD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$1,126 NZD
View
A
Retailer 10
-
$1,155 NZD
View
Retailer 11
-
$1,515 NZD
View
Price last confirmed 8 days ago
B+
Retailer 12
-
$1,678 NZD
View
Retailer 13
-
$2,095 NZD
View
Price last confirmed 8 days ago
B
Retailer 14
-
$2,125 NZD
View
B
Retailer 15
-
$2,180 NZD
View
B+
Retailer 16
-
$2,248 NZD
View
B+
Retailer 17
-
$2,288 NZD
View
B+
Retailer 18
-
$2,326 NZD
View
Retailer 19
-
$2,626 NZD
View
Price last confirmed 7 days ago
B
Retailer 20
-
$2,776 NZD
View
Retailer 21
-
$4,604 NZD
View
Price last confirmed 18 days ago
Most Expensive
B
Brilliant Earth
21417112A · Oct 31
$4,825 NZD
$2,720 USD
View
21 more retailers have this diamond
Prices start from $525 NZDSave up to $4,300 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
1.72ct Radiant
$525 NZD