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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 $1,032 NZD
As of November 6, 2026
Save $1,551 NZD (60%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,514 NZD 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 815674622. Listed at 13 retailers as of November 4, 2026, with a 150% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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: $3,514 NZD|Low: $1,032 NZD|High: $3,514 NZD|Avg: $1,710 NZD
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 12$1,032 NZD
Retailer 3$1,120 NZD
Retailer 10$1,207 NZD
Retailer 11$1,272 NZD
Retailer 5$1,293 NZD
Retailer 4$1,357 NZD
Retailer 2$1,367 NZD
Retailer 6$1,405 NZD
Retailer 9$1,503 NZD
Retailer 7$1,728 NZD
Retailer 13$2,405 NZD
Retailer 8$2,583 NZD
NZ Jewellers$3,514 NZD

42 data points across 13 retailers

13 retailers$1,032 NZD to $2,583 NZD

B+
Cheapest Retailer
-
$1,032 NZD
Final sale: no returns
B+
Retailer 2
-
$1,120 NZD
View
B+
Retailer 3
-
$1,207 NZD
View
B+
Retailer 4
-
$1,272 NZD
View
B
Retailer 5
-
$1,293 NZD
View
B
Retailer 6
-
$1,357 NZD
View
B
Retailer 7
-
$1,367 NZD
View
B
Retailer 8
-
$1,405 NZD
View
B
Retailer 9
-
$1,503 NZD
View
B
Retailer 10
-
$1,728 NZD
View
C
Retailer 11
-
$2,405 NZD
View
B
Retailer 12
-
$2,583 NZD
View
Most Expensive
NZ Jewellers
45561710-6261-4c8f-814a-6e41483f6e9d · Nov 5
$3,514 NZD
$1,948 USD
View
Price under review
12 more retailers have this diamond
Prices start from $1,032 NZDSave up to $1,551 NZD

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
$1,032 NZD