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Radiant|Natural|IGI

0.51ct D SI2 Radiant Natural Diamond

EX • D/SI2 • IGI 692555294

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

Certificate IGI 692555294

Diamond specifications and retailer prices

From $607 AUD
₹40,604 INR
As of October 30, 2026
Save $1,953 AUD (76%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $2,560 AUD at NZ Jewellers · As of October 30, 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 692555294. Listed at 7 retailers as of October 30, 2026, with prices from $607 to $2,560, a $1,953 spread on the same certified stone. NZ Jewellers lists it at $2,560. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.51
Carat
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle42.6°
Pavilion angle32.4°
OriginNatural
Grading LabIGI
CertificateIGI 692555294
Dimensions5.25 × 4.08 × 2.72 mm
L/W Ratio1.29
Culet sizePointed
Top View
5.25 mm4.08 mm0.51 ctD / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI 692555294
Side View
Table 66.0%Crown 42.6°Girdle: MED-STKPavilion 32.4°Culet: NoneDepth 66.7%

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: Oct 30
Current: $2,560 AUD|Low: $603 AUD|High: $2,637 AUD|Avg: $1,311 AUD|-2.9%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 3$607 AUD
Retailer 8$929 AUD
Retailer 7$1,004 AUD
Retailer 5$1,023 AUD
Retailer 6$1,161 AUD
Retailer 2$1,209 AUD
Retailer 4$1,895 AUD
NZ Jewellers$2,560 AUD

46 data points across 8 retailers

7 retailers$607 AUD to $2,560 AUD

A
Cheapest Retailer
-
$607 AUD
₹40,604 INR
B+
Retailer 2
-
$1,004 AUD
$705 USD
View
A
Retailer 3
-
$1,023 AUD
£566 GBP
View
B+
Retailer 4
-
$1,161 AUD
$816 USD
View
B+
Retailer 5
-
$1,209 AUD
€809 EUR
View
B
Retailer 6
-
$1,895 AUD
£1,048 GBP
View
Most Expensive
B
NZ Jewellers
eb0ea19e-556b-4bfb-8a67-c25abd743aa2 · Oct 30
$2,560 AUD
$1,798 USD
View
6 more retailers have this diamond
Prices start from $607 AUDSave up to $1,953 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
$607 AUD