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Radiant|Lab Grown|IGI

0.51ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG818661966

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

Certificate IGI LG818661966

Diamond specifications and retailer prices

From $273 NZD
As of November 3, 2026
Save $1,491 NZD (85%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $1,764 NZD at Reve Diamonds · As of November 4, 2026
View at Reve Diamonds

About this 0.51ct lab-grown radiant diamond

This 0.51ct lab-grown radiant sits in the half to three-quarter carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818661966 or 818661966. Listed at 21 retailers as of November 3, 2026, with prices from $273 to $1,764, a $1,491 spread on the same certified stone. Reve Diamonds lists it at $1,764. 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
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.1°
Pavilion angle37.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818661966
Dimensions5.67 × 4.03 × 2.79 mm
L/W Ratio1.41
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
5.67 mm4.03 mm0.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818661966
Side View
Table 64.0%Crown 41.1°Girdle: STK-THKPavilion 37.1°Culet: NoneDepth 69.2%

Caratlytics Score

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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: Nov 3
Current: $509 NZD|Low: $273 NZD|High: $1,791 NZD|Avg: $724 NZD|-0.7%
Retailer 1
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
Reve Diamonds
November 4, 2026
Retailer 4$273 NZD
Retailer 5$293 NZD
Retailer 7$309 NZD
Retailer 6$314 NZD
Retailer 8$426 NZD
Retailer 1$509 NZD
Retailer 13$539 NZD
Retailer 11$548 NZD
Retailer 9$594 NZD
Retailer 16$598 NZD
Retailer 15$639 NZD
Retailer 10$770 NZD
Retailer 2$836 NZD
Retailer 17$922 NZD
Retailer 14$1,027 NZD
Retailer 3$1,071 NZD
Retailer 12$1,414 NZD
Reve Diamonds$1,764 NZD

35 data points across 18 retailers

21 retailers$273 NZD to $1,764 NZD

Retailer 1
-
$245 NZD
Price last confirmed 27 days ago
A
Retailer 2
-
$273 NZD
View
Final sale: no returns
Retailer 3
-
$293 NZD
View
Price last confirmed 39 days ago
Retailer 4
-
$303 NZD
View
Price last confirmed 23 days ago
Retailer 5
-
$303 NZD
View
Price last confirmed 32 days ago
Retailer 6
-
$309 NZD
View
Price last confirmed 40 days ago
A
Retailer 7
-
$426 NZD
View
A
Retailer 8
-
$509 NZD
View
A
Retailer 9
-
$539 NZD
View
A
Retailer 10
-
$548 NZD
View
A
Retailer 11
-
$594 NZD
View
A
Retailer 12
-
$598 NZD
View
Retailer 13
-
$639 NZD
View
Price last confirmed 14 days ago
B+
Retailer 14
-
$770 NZD
View
B+
Retailer 15
-
$836 NZD
View
B+
Retailer 16
-
$922 NZD
View
Retailer 17
-
$972 NZD
View
Price last confirmed 35 days ago
B
Retailer 18
-
$1,027 NZD
View
B
Retailer 19
-
$1,071 NZD
View
B
Retailer 20
-
$1,414 NZD
View
Most Expensive
B
Reve Diamonds
C24E94FE2 · Nov 4
$1,764 NZD
$994 USD
View
20 more retailers have this diamond
Prices start from $273 NZDSave up to $1,491 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
$273 NZD