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Oval|Natural|GIA

0.51ct H SI1 Oval Natural Diamond

EX • H/SI1 • GIA 5556394112

Certificate GIA 5556394112

Diamond specifications and retailer prices

From $972 NZD
As of November 6, 2026
Save $970 NZD (50%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $4,006 NZD at Diamond Exchange Canada · As of November 5, 2026
View at Diamond Exchange Canada

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5556394112. Listed at 10 retailers as of November 6, 2026, with a 100% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.51
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5556394112
Dimensions6.57 × 4.47 × 2.70 mm
L/W Ratio1.47
Culet sizeNone
Key to symbols
Cloud
Top View
6.57 mm4.47 mm0.51 ctH / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 5556394112
Side View
Table 63.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 60.3%

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: $1,900 NZD|Low: $884 NZD|High: $4,351 NZD|Avg: $1,946 NZD|+1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 4$972 NZD
Retailer 5$1,338 NZD
Retailer 8$1,450 NZD
Retailer 2$1,669 NZD
Retailer 3$1,795 NZD
Retailer 1$1,900 NZD
Retailer 6$1,943 NZD
Retailer 9$2,103 NZD
Retailer 7$4,351 NZD

43 data points across 9 retailers

10 retailers$972 NZD to $1,943 NZD

A
Cheapest Retailer
-
$972 NZD
Final sale: no returns
B+
Retailer 2
-
$1,283 NZD
View
B+
Retailer 3
-
$1,338 NZD
View
B+
Retailer 4
-
$1,546 NZD
View
B
Retailer 5
-
$1,669 NZD
View
B
Retailer 6
-
$1,766 NZD
View
B
Retailer 7
-
$1,795 NZD
View
B
Retailer 8
-
$1,900 NZD
View
B
Retailer 9
-
$1,943 NZD
View
Most Expensive
Diamond Exchange Canada
1962132016 · Nov 5
$4,006 NZD
CA$3,084 CAD
View
Price under review
9 more retailers have this diamond
Prices start from $972 NZDSave up to $970 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.

A
0.51ct Oval
$972 NZD