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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 $431 AUD
As of November 6, 2026
Save $1,778 AUD (81%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,209 AUD 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 $431 to $2,209, a $1,778 spread on the same certified stone. NZ Jewellers lists it at $2,209. 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: $2,209 AUD|Low: $431 AUD|High: $2,722 AUD|Avg: $1,116 AUD|-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$431 AUD
Retailer 16$576 AUD
Retailer 3$621 AUD
Retailer 9$621 AUD
Retailer 4$665 AUD
Retailer 11$703 AUD
Retailer 5$712 AUD
Retailer 14$722 AUD
Retailer 2$773 AUD
Retailer 8$786 AUD
Retailer 15$888 AUD
Retailer 13$894 AUD
Retailer 12$1,041 AUD
Retailer 7$1,559 AUD
Retailer 6$1,659 AUD
NZ Jewellers$2,209 AUD

26 data points across 16 retailers

13 retailers$431 AUD to $2,209 AUD

A
Cheapest Retailer
-
$431 AUD
B+
Retailer 2
-
$576 AUD
View
B+
Retailer 3
-
$621 AUD
View
B+
Retailer 4
-
$621 AUD
View
B+
Retailer 5
-
$665 AUD
View
A
Retailer 6
-
$703 AUD
View
Retailer 7
-
$712 AUD
View
Price last confirmed 24 days ago
B+
Retailer 8
-
$722 AUD
View
B+
Retailer 9
-
$773 AUD
View
B+
Retailer 10
-
$888 AUD
View
B+
Retailer 11
-
$894 AUD
View
B+
Retailer 12
-
$1,041 AUD
View
Most Expensive
C
NZ Jewellers
bb5d70b2-dff2-4582-96c6-01a1bd36627f · Nov 5
$2,209 AUD
$1,518 USD
View
12 more retailers have this diamond
Prices start from $431 AUDSave up to $1,778 AUD

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
$431 AUD