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Radiant|Natural|IGI

0.51ct G SI1 Radiant Natural Diamond

VG • G/SI1 • IGI 763646284

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

Certificate IGI 763646284

Diamond specifications and retailer prices

From $534 NZD
As of November 6, 2026
Save $2,204 NZD (81%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,738 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.51ct natural radiant diamond

This 0.51ct natural radiant sits in the half to three-quarter carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 763646284. Listed at 13 retailers as of November 5, 2026, with prices from $534 to $2,738, a $2,204 spread on the same certified stone. NZ Jewellers lists it at $2,738. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
G
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceStrong
Crown angle39.5°
Pavilion angle33.8°
OriginNatural
Grading LabIGI
CertificateIGI 763646284
Dimensions5.28 × 4.07 × 2.69 mm
L/W Ratio1.30
Culet sizePointed
Top View
5.28 mm4.07 mm0.51 ctG / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceStrong
CertificateIGI 763646284
Side View
Table 72.0%Crown 39.5°Girdle: STK-THKPavilion 33.8°Culet: NoneDepth 66.1%

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 6
Current: $2,738 NZD|Low: $534 NZD|High: $3,373 NZD|Avg: $1,383 NZD|-18.8%
NZ Jewellers
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
November 7, 2026
Retailer 10$534 NZD
Retailer 16$714 NZD
Retailer 3$770 NZD
Retailer 9$770 NZD
Retailer 4$824 NZD
Retailer 11$871 NZD
Retailer 5$882 NZD
Retailer 14$895 NZD
Retailer 2$958 NZD
Retailer 8$974 NZD
Retailer 15$1,100 NZD
Retailer 13$1,108 NZD
Retailer 12$1,290 NZD
Retailer 7$1,932 NZD
Retailer 6$2,056 NZD
NZ Jewellers$2,738 NZD

26 data points across 16 retailers

13 retailers$534 NZD to $2,738 NZD

A
Cheapest Retailer
-
$534 NZD
B+
Retailer 2
-
$714 NZD
View
B+
Retailer 3
-
$770 NZD
View
B+
Retailer 4
-
$770 NZD
View
B+
Retailer 5
-
$824 NZD
View
A
Retailer 6
-
$871 NZD
View
Retailer 7
-
$882 NZD
View
Price last confirmed 24 days ago
B+
Retailer 8
-
$895 NZD
View
B+
Retailer 9
-
$958 NZD
View
B+
Retailer 10
-
$1,100 NZD
View
B+
Retailer 11
-
$1,108 NZD
View
B+
Retailer 12
-
$1,290 NZD
View
Most Expensive
C
NZ Jewellers
bb5d70b2-dff2-4582-96c6-01a1bd36627f · Nov 5
$2,738 NZD
$1,518 USD
View
12 more retailers have this diamond
Prices start from $534 NZDSave up to $2,204 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
$534 NZD