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Oval|Natural|IGI

0.51ct H SI1 Oval Natural Diamond

VG • H/SI1 • IGI 815682447

Shape and cutting style on the report: Oval brilliant

Certificate IGI 815682447

Diamond specifications and retailer prices

From $575 AUD
As of November 6, 2026
Save $1,816 AUD (76%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,391 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.51ct natural oval diamond

This 0.51ct natural oval sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 815682447. Listed at 13 retailers as of November 5, 2026, with prices from $575 to $2,391, a $1,816 spread on the same certified stone. NZ Jewellers lists it at $2,391. 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
H
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle41.5°
Pavilion angle29.3°
OriginNatural
Grading LabIGI
CertificateIGI 815682447
Dimensions7.09 × 4.27 × 2.43 mm
L/W Ratio1.66
Girdle conditionFaceted
Top View
7.09 mm4.27 mm0.51 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateIGI 815682447
Side View
Table 59.0%Crown 41.5°Girdle: STK-THKPavilion 29.3°Culet: NoneDepth 56.9%

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: $2,391 AUD|Low: $575 AUD|High: $2,391 AUD|Avg: $900 AUD
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
November 6, 2026
Retailer 3$575 AUD
Retailer 10$575 AUD
Retailer 9$624 AUD
Retailer 11$672 AUD
Retailer 8$720 AUD
Retailer 2$761 AUD
Retailer 4$782 AUD
Retailer 6$795 AUD
Retailer 5$851 AUD
Retailer 7$931 AUD
Retailer 12$1,033 AUD
Retailer 13$1,441 AUD
NZ Jewellers$2,391 AUD

19 data points across 13 retailers

13 retailers$575 AUD to $2,391 AUD

Retailer 1
-
$575 AUD
Price last confirmed 9 days ago
A
Retailer 2
-
$575 AUD
View
Final sale: no returns
A
Retailer 3
-
$624 AUD
View
B+
Retailer 4
-
$672 AUD
View
B+
Retailer 5
-
$720 AUD
View
B+
Retailer 6
-
$761 AUD
View
B+
Retailer 7
-
$782 AUD
View
B+
Retailer 8
-
$795 AUD
View
B+
Retailer 9
-
$851 AUD
View
B+
Retailer 10
-
$931 AUD
View
B+
Retailer 11
-
$1,033 AUD
View
B
Retailer 12
-
$1,441 AUD
View
Most Expensive
C
NZ Jewellers
8a48c500-bc0c-4c1d-83d9-4875933a4a41 · Nov 5
$2,391 AUD
$1,643 USD
View
12 more retailers have this diamond
Prices start from $575 AUDSave up to $1,816 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 Oval
$575 AUD