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Oval|Natural|IGI

0.51ct H SI1 Oval Natural Diamond

VG • H/SI1 • IGI 815674622

Shape and cutting style on the report: Oval brilliant

Certificate IGI 815674622

Diamond specifications and retailer prices

From $832 AUD
As of November 6, 2026
Save $2,003 AUD (71%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,835 AUD at NZ Jewellers · As of November 7, 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 815674622. Listed at 16 retailers as of November 6, 2026, with prices from $832 to $2,835, a $2,003 spread on the same certified stone. NZ Jewellers lists it at $2,835. 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
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle31.1°
Pavilion angle38.6°
OriginNatural
Grading LabIGI
CertificateIGI 815674622
Dimensions6.45 × 4.48 × 2.65 mm
L/W Ratio1.44
Girdle conditionFaceted
Culet sizeNone
Top View
6.45 mm4.48 mm0.51 ctH / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI 815674622
Side View
Table 59.0%Crown 31.1°Girdle: STK-THKPavilion 38.6°Culet: NoneDepth 59.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $2,835 AUD|Low: $832 AUD|High: $2,835 AUD|Avg: $1,364 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
Retailer 14
Retailer 15
Retailer 16
November 7, 2026
Retailer 4$832 AUD
Retailer 6$904 AUD
Retailer 3$974 AUD
Retailer 9$1,022 AUD
Retailer 8$1,044 AUD
Retailer 11$1,051 AUD
Retailer 7$1,094 AUD
Retailer 10$1,110 AUD
Retailer 14$1,134 AUD
Retailer 13$1,179 AUD
Retailer 16$1,212 AUD
Retailer 2$1,268 AUD
Retailer 15$1,394 AUD
Retailer 5$1,940 AUD
Retailer 12$2,075 AUD
NZ Jewellers$2,835 AUD

39 data points across 16 retailers

16 retailers$832 AUD to $2,835 AUD

B+
Cheapest Retailer
-
$832 AUD
Final sale: no returns
B+
Retailer 2
-
$904 AUD
View
B+
Retailer 3
-
$974 AUD
View
B+
Retailer 4
-
$1,022 AUD
View
B
Retailer 5
-
$1,044 AUD
View
B
Retailer 6
-
$1,051 AUD
View
B
Retailer 7
-
$1,094 AUD
View
B
Retailer 8
-
$1,110 AUD
View
B
Retailer 9
-
$1,134 AUD
View
B
Retailer 10
-
$1,179 AUD
View
B
Retailer 11
-
$1,212 AUD
View
B
Retailer 12
-
$1,268 AUD
View
B
Retailer 13
-
$1,394 AUD
View
C
Retailer 14
-
$1,940 AUD
View
B
Retailer 15
-
$2,075 AUD
View
Most Expensive
C
NZ Jewellers
45561710-6261-4c8f-814a-6e41483f6e9d · Nov 7
$2,835 AUD
$1,948 USD
View
15 more retailers have this diamond
Prices start from $832 AUDSave up to $2,003 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.

B+
0.51ct Oval
$832 AUD