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 $395 USD
As of November 6, 2026
Save $1,248 USD (76%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,643 USD 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 $395 to $1,643, a $1,248 spread on the same certified stone. NZ Jewellers lists it at $1,643. 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
Color
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: $1,643 USD|Low: $395 USD|High: $1,643 USD|Avg: $619 USD
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$395 USD
Retailer 10$395 USD
Retailer 9$429 USD
Retailer 11$462 USD
Retailer 8$495 USD
Retailer 2$523 USD
Retailer 4$537 USD
Retailer 6$546 USD
Retailer 5$585 USD
Retailer 7$640 USD
Retailer 12$710 USD
Retailer 13$990 USD
NZ Jewellers$1,643 USD

19 data points across 13 retailers

13 retailers$395 USD to $1,643 USD

Retailer 1
-
$395 USD
Price last confirmed 9 days ago
A
Retailer 2
-
$395 USD
View
Final sale: no returns
A
Retailer 3
-
$429 USD
View
B+
Retailer 4
-
$462 USD
View
B+
Retailer 5
-
$495 USD
View
B+
Retailer 6
-
$523 USD
View
B+
Retailer 7
-
$537 USD
View
B+
Retailer 8
-
$546 USD
View
B+
Retailer 9
-
$585 USD
View
B+
Retailer 10
-
$640 USD
View
B+
Retailer 11
-
$710 USD
View
B
Retailer 12
-
$990 USD
View
Most Expensive
C
NZ Jewellers
8a48c500-bc0c-4c1d-83d9-4875933a4a41 · Nov 5
$1,643 USD
View
12 more retailers have this diamond
Prices start from $395 USDSave up to $1,248 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 Oval
$395 USD