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Oval|Natural|GIA

0.51ct H I1 Oval Natural Diamond

ID • H/I1 • GIA 6312474840

Certificate GIA 6312474840

Diamond specifications and retailer prices

From $1,001 NZD
$563 USD
As of October 31, 2026
Save $485 NZD (33%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $3,139 NZD at NZ Jewellers · As of November 2, 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 I1 clarity (included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6312474840. Listed at 7 retailers as of October 31, 2026, with a 48% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.51
Carat
H
Colour
I1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6312474840
Dimensions6.82 × 4.55 × 2.63 mm
L/W Ratio1.50
Top View
6.82 mm4.55 mm0.51 ctH / I1
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6312474840
Side View
Table 63.0%CrownGirdlePavilionCulet: NoneDepth 57.9%

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: Oct 31
Current: $3,139 NZD|Low: $1,001 NZD|High: $3,139 NZD|Avg: $1,312 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 5$1,001 NZD
Retailer 2$1,079 NZD
Retailer 7$1,079 NZD
Retailer 8$1,115 NZD
Retailer 9$1,116 NZD
Retailer 6$1,155 NZD
Retailer 11$1,351 NZD
Retailer 3$1,363 NZD
Retailer 4$1,485 NZD
Retailer 10$1,518 NZD
NZ Jewellers$3,139 NZD

10 data points across 11 retailers

7 retailers$1,001 NZD to $1,485 NZD

B+
Cheapest Retailer
-
$1,001 NZD
$563 USD
B+
Retailer 2
-
$1,079 NZD
$607 USD
View
B+
Retailer 3
-
$1,079 NZD
$607 USD
View
B+
Retailer 4
-
$1,115 NZD
HK$4,900 HKD
View
B+
Retailer 5
-
$1,155 NZD
$650 USD
View
B
Retailer 6
-
$1,485 NZD
€796 EUR
View
Most Expensive
NZ Jewellers
7d745e22-9545-49a9-a96c-c2c7c3aa1323 · Nov 2
$3,139 NZD
$1,766 USD
View
Price under review
6 more retailers have this diamond
Prices start from $1,001 NZDSave up to $485 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
$1,001 NZD