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Oval|Natural|GIA

0.51ct J SI1 Oval Natural Diamond

GD • J/SI1 • GIA 2498422008

Certificate GIA 2498422008

Diamond specifications and retailer prices

From $866 NZD
As of November 6, 2026
Save $1,299 NZD (60%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,942 NZD at NZ Jewellers · As of September 30, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2498422008. Listed at 14 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
J
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2498422008
Dimensions6.53 × 4.60 × 2.80 mm
L/W Ratio1.42
Top View
6.53 mm4.60 mm0.51 ctJ / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2498422008
Side View
Table 55.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 61.0%

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: $1,164 NZD|Low: $866 NZD|High: $2,192 NZD|Avg: $1,370 NZD|+5.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 5$866 NZD
Retailer 7$1,043 NZD
Retailer 1$1,164 NZD
Retailer 8$1,299 NZD
Retailer 4$1,402 NZD
Retailer 6$1,411 NZD
Retailer 2$1,454 NZD
Retailer 3$2,165 NZD

42 data points across 8 retailers

14 retailers$866 NZD to $2,165 NZD

B+
Cheapest Retailer
-
$866 NZD
Final sale: no returns
Retailer 2
-
$938 NZD
View
Price last confirmed 29 days ago
Retailer 3
-
$1,010 NZD
View
Price last confirmed 29 days ago
Retailer 4
-
$1,010 NZD
View
Price last confirmed 38 days ago
B
Retailer 5
-
$1,061 NZD
View
Retailer 6
-
$1,082 NZD
View
Price last confirmed 38 days ago
B
Retailer 7
-
$1,164 NZD
View
B
Retailer 8
-
$1,174 NZD
View
B
Retailer 9
-
$1,299 NZD
View
B
Retailer 10
-
$1,402 NZD
View
Retailer 11
-
$1,411 NZD
View
Price last confirmed 33 days ago
B
Retailer 12
-
$1,454 NZD
View
C
Retailer 13
-
$2,165 NZD
View
Most Expensive
NZ Jewellers
827003b3-0b82-4dbb-bc77-e102f710123f · Sep 30
$2,942 NZD
$1,631 USD
View
Price last confirmed 37 days ago
13 more retailers have this diamond
Prices start from $866 NZDSave up to $1,299 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
$866 NZD