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 $296 USD
As of November 6, 2026
Save $1,222 USD (81%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,518 USD 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 $296 to $1,518, a $1,222 spread on the same certified stone. NZ Jewellers lists it at $1,518. 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
Color
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: $1,518 USD|Low: $296 USD|High: $1,870 USD|Avg: $767 USD|-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$296 USD
Retailer 16$396 USD
Retailer 3$427 USD
Retailer 9$427 USD
Retailer 4$457 USD
Retailer 11$483 USD
Retailer 5$489 USD
Retailer 14$496 USD
Retailer 2$531 USD
Retailer 8$540 USD
Retailer 15$610 USD
Retailer 13$614 USD
Retailer 12$715 USD
Retailer 7$1,071 USD
Retailer 6$1,140 USD
NZ Jewellers$1,518 USD

26 data points across 16 retailers

13 retailers$296 USD to $1,518 USD

A
Cheapest Retailer
-
$296 USD
B+
Retailer 2
-
$396 USD
View
B+
Retailer 3
-
$427 USD
View
B+
Retailer 4
-
$427 USD
View
B+
Retailer 5
-
$457 USD
View
A
Retailer 6
-
$483 USD
View
Retailer 7
-
$489 USD
View
Price last confirmed 24 days ago
B+
Retailer 8
-
$496 USD
View
B+
Retailer 9
-
$531 USD
View
B+
Retailer 10
-
$610 USD
View
B+
Retailer 11
-
$614 USD
View
B+
Retailer 12
-
$715 USD
View
Most Expensive
C
NZ Jewellers
bb5d70b2-dff2-4582-96c6-01a1bd36627f · Nov 5
$1,518 USD
View
12 more retailers have this diamond
Prices start from $296 USDSave up to $1,222 USD

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
$296 USD