Radiant|Lab Grown|IGI

0.51ct F SI1 Radiant Lab Grown Diamond

ID • F/SI1 • IGI LG539229276

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

Certificate IGI LG539229276

Diamond specifications and retailer prices

From $220 NZD
$124 USD
As of November 2, 2026
Save $1,472 NZD (87%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,291 NZD at MOH London · As of October 26, 2026
View at MOH London

About this 0.51ct lab-grown radiant diamond

This 0.51ct 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 LG539229276 or 539229276. Listed at 16 retailers as of November 1, 2026, with a 668% 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

0.51
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.6°
Pavilion angle36.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG539229276
Dimensions5.80 × 3.97 × 2.72 mm
L/W Ratio1.46
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
5.80 mm3.97 mm0.51 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG539229276
Side View
Table 65.5%Crown 37.6°Girdle: MED-STKPavilion 36.1°Culet: NoneDepth 68.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $2,291 NZD|Low: $211 NZD|High: $2,316 NZD|Avg: $649 NZD|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 2, 2026
Retailer 9$220 NZD
Retailer 5$247 NZD
Retailer 13$256 NZD
Retailer 3$291 NZD
Retailer 10$291 NZD
Retailer 6$498 NZD
Retailer 12$528 NZD
Retailer 2$570 NZD
Retailer 7$662 NZD
Retailer 4$679 NZD
Retailer 11$882 NZD
Retailer 8$931 NZD
MOH London$2,291 NZD

43 data points across 13 retailers

16 retailers$220 NZD to $1,692 NZD

A
Cheapest Retailer
-
$220 NZD
$124 USD
A
Retailer 2
-
$247 NZD
$139 USD
View
Final sale: no returns
A
Retailer 3
-
$256 NZD
$144 USD
View
A
Retailer 4
-
$291 NZD
$164 USD
View
Retailer 5
-
$291 NZD
$164 USD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$498 NZD
$280 USD
View
B+
Retailer 7
-
$528 NZD
$297 USD
View
B+
Retailer 8
-
$570 NZD
£253 GBP
View
B+
Retailer 9
-
$660 NZD
HK$2,900 HKD
View
B+
Retailer 10
-
$662 NZD
£293 GBP
View
B+
Retailer 11
-
$679 NZD
$382 USD
View
B
Retailer 12
-
$882 NZD
$496 USD
View
B
Retailer 13
-
$931 NZD
$524 USD
View
B
Retailer 14
-
$982 NZD
$552 USD
View
B
Retailer 15
-
$1,692 NZD
$952 USD
View
Most Expensive
MOH London
LG539229276 · Oct 26
$2,291 NZD
£1,015 GBP
View
Price under review
15 more retailers have this diamond
Prices start from $220 NZDSave up to $1,472 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
0.51ct Radiant
$220 NZD