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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 €392 EUR
$440 USD
As of November 2, 2026
Save €630 EUR (62%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €1,619 EUR 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: €1,619 EUR|Low: €392 EUR|High: €2,705 EUR|Avg: €988 EUR
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€392 EUR
Retailer 9€497 EUR
Retailer 4€555 EUR
Retailer 12€556 EUR
Retailer 3€616 EUR
Retailer 10€616 EUR
Retailer 11€950 EUR
Retailer 2€960 EUR
Retailer 6€1,022 EUR
Retailer 8€1,589 EUR
NZ Jewellers€1,619 EUR
Retailer 5€2,673 EUR

43 data points across 12 retailers

12 retailers€392 EUR to €1,022 EUR

B+
Cheapest Retailer
-
€392 EUR
$440 USD
B
Retailer 2
-
€497 EUR
$557 USD
View
B
Retailer 3
-
€555 EUR
$623 USD
View
Final sale: no returns
B
Retailer 4
-
€556 EUR
$624 USD
View
Retailer 5
-
€616 EUR
$691 USD
View
Price last confirmed 17 days ago
B
Retailer 6
-
€616 EUR
$691 USD
View
B
Retailer 7
-
€950 EUR
$1,066 USD
View
B
Retailer 8
-
€960 EUR
£848 GBP
View
B
Retailer 9
-
€1,022 EUR
View
Retailer 10
-
€1,589 EUR
$1,782 USD
View
Price under review
Most Expensive
NZ Jewellers
45bb01ef-b50c-4cf6-9509-a15cf4491b3c · Nov 1
€1,619 EUR
$1,816 USD
View
Price under review
10 more retailers have this diamond
Prices start from €392 EURSave up to €630 EUR

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
€392 EUR