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Radiant|Lab Grown|IGI

0.51ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG790630389

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

Certificate IGI LG790630389

Diamond specifications and retailer prices

From $257 NZD
$145 USD
As of October 30, 2026
Save $1,234 NZD (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,492 NZD at MOH London · As of November 1, 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 E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG790630389 or 790630389. Listed at 19 retailers as of October 30, 2026, with prices from $257 to $1,492, a $1,234 spread on the same certified stone. MOH London lists it at $1,492. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.51
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle50.2°
Pavilion angle38.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG790630389
Dimensions5.56 × 3.91 × 2.72 mm
L/W Ratio1.42
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.56 mm3.91 mm0.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG790630389
Side View
Table 67.0%Crown 50.2°Girdle: MediumPavilion 38.4°Culet: NoneDepth 69.6%

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: $1,492 NZD|Low: $257 NZD|High: $1,548 NZD|Avg: $716 NZD|-3.6%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 1, 2026
Retailer 4$257 NZD
Retailer 7$287 NZD
Retailer 16$298 NZD
Retailer 13$319 NZD
Retailer 10$325 NZD
Retailer 6$435 NZD
Retailer 12$546 NZD
Retailer 2$580 NZD
Retailer 19$591 NZD
Retailer 15$628 NZD
Retailer 11$799 NZD
Retailer 9$821 NZD
Retailer 3$850 NZD
Retailer 8$885 NZD
Retailer 18$1,015 NZD
Retailer 14$1,026 NZD
Retailer 17$1,084 NZD
Retailer 5$1,125 NZD
MOH London$1,492 NZD

19 data points across 19 retailers

19 retailers$257 NZD to $1,492 NZD

A
Cheapest Retailer
-
$257 NZD
$145 USD
A
Retailer 2
-
$287 NZD
$162 USD
View
Final sale: no returns
A
Retailer 3
-
$298 NZD
$168 USD
View
A
Retailer 4
-
$319 NZD
$180 USD
View
Retailer 5
-
$325 NZD
$183 USD
View
Price last confirmed 7 days ago
A
Retailer 6
-
$435 NZD
$245 USD
View
A
Retailer 7
-
$546 NZD
£242 GBP
View
A
Retailer 8
-
$580 NZD
ZAR 5,280 ZAR
View
A
Retailer 9
-
$591 NZD
$333 USD
View
B+
Retailer 10
-
$628 NZD
€337 EUR
View
B+
Retailer 11
-
$799 NZD
A$693 AUD
View
B+
Retailer 12
-
$821 NZD
A$712 AUD
View
B+
Retailer 13
-
$850 NZD
$479 USD
View
B+
Retailer 14
-
$885 NZD
SGD 674 SGD
View
B+
Retailer 15
-
$1,015 NZD
$572 USD
View
B+
Retailer 16
-
$1,026 NZD
$578 USD
View
B
Retailer 17
-
$1,084 NZD
$611 USD
View
B+
Retailer 18
-
$1,125 NZD
$634 USD
View
Most Expensive
B
MOH London
LG790630389 · Nov 1
$1,492 NZD
£662 GBP
View
18 more retailers have this diamond
Prices start from $257 NZDSave up to $1,234 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
$257 NZD