CaratHunter
Plans
Radiant|Lab Grown|IGI

0.73ct F SI1 Radiant Lab Grown Diamond

ID • F/SI1 • IGI LG508121562

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

Certificate IGI LG508121562

Diamond specifications and retailer prices

From $782 NZD
$440 USD
As of November 2, 2026
Save $1,256 NZD (62%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $3,228 NZD at NZ Jewellers · As of November 1, 2026
View at NZ Jewellers

About this 0.73ct lab-grown radiant diamond

This 0.73ct lab-grown radiant sits in the half to three-quarter carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG508121562 or 508121562. Listed at 12 retailers as of November 2, 2026, with a 161% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.73
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.9°
Pavilion angle31.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG508121562
Dimensions5.91 × 4.38 × 3.08 mm
L/W Ratio1.35
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
5.91 mm4.38 mm0.73 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG508121562
Side View
Table 67.5%Crown 37.9°Girdle: STK-THKPavilion 31.5°Culet: NoneDepth 70.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $3,228 NZD|Low: $782 NZD|High: $5,392 NZD|Avg: $1,965 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 7$782 NZD
Retailer 9$990 NZD
Retailer 4$1,107 NZD
Retailer 12$1,109 NZD
Retailer 3$1,228 NZD
Retailer 10$1,228 NZD
Retailer 11$1,895 NZD
Retailer 2$1,915 NZD
Retailer 6$2,038 NZD
Retailer 8$3,167 NZD
NZ Jewellers$3,228 NZD
Retailer 5$5,329 NZD

44 data points across 12 retailers

12 retailers$782 NZD to $2,038 NZD

B+
Cheapest Retailer
-
$782 NZD
$440 USD
B
Retailer 2
-
$990 NZD
$557 USD
View
B
Retailer 3
-
$1,107 NZD
$623 USD
View
Final sale: no returns
B
Retailer 4
-
$1,109 NZD
$624 USD
View
Retailer 5
-
$1,228 NZD
$691 USD
View
Price last confirmed 17 days ago
B
Retailer 6
-
$1,228 NZD
$691 USD
View
B
Retailer 7
-
$1,895 NZD
$1,066 USD
View
B
Retailer 8
-
$1,915 NZD
£848 GBP
View
B
Retailer 9
-
$2,038 NZD
€1,092 EUR
View
Retailer 10
-
$3,167 NZD
$1,782 USD
View
Price under review
Most Expensive
NZ Jewellers
45bb01ef-b50c-4cf6-9509-a15cf4491b3c · Nov 1
$3,228 NZD
$1,816 USD
View
Price under review
10 more retailers have this diamond
Prices start from $782 NZDSave up to $1,256 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.

B+
0.73ct Radiant
$782 NZD