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Oval|Natural|GIA

0.51ct G SI1 Oval Natural Diamond

GD • G/SI1 • GIA 7478781643

Certificate GIA 7478781643

Diamond specifications and retailer prices

From $1,117 NZD
As of November 6, 2026
Save $1,679 NZD (60%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,797 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 G 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 7478781643. Listed at 15 retailers as of November 1, 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
G
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7478781643
Dimensions6.74 × 4.28 × 2.73 mm
L/W Ratio1.57
Key to symbols
Twinning Wisp, Feather
Top View
6.74 mm4.28 mm0.51 ctG / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7478781643
Side View
Table 63.0%CrownGirdle: Ext. ThickPavilionCulet: NoneDepth 63.8%

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: $1,468 NZD|Low: $1,117 NZD|High: $2,829 NZD|Avg: $1,648 NZD|+4.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 5$1,117 NZD
Retailer 9$1,122 NZD
Retailer 7$1,154 NZD
Retailer 1$1,468 NZD
Retailer 8$1,542 NZD
Retailer 3$1,723 NZD
Retailer 6$1,820 NZD
Retailer 2$1,867 NZD
Retailer 4$2,796 NZD

42 data points across 9 retailers

15 retailers$1,117 NZD to $2,796 NZD

A
Cheapest Retailer
-
$1,117 NZD
Final sale: no returns
B+
Retailer 2
-
$1,154 NZD
View
Retailer 3
-
$1,210 NZD
View
Price last confirmed 29 days ago
Retailer 4
-
$1,210 NZD
View
Price last confirmed 29 days ago
Retailer 5
-
$1,257 NZD
View
Price last confirmed 38 days ago
Retailer 6
-
$1,396 NZD
View
Price last confirmed 38 days ago
B
Retailer 7
-
$1,443 NZD
View
B
Retailer 8
-
$1,449 NZD
View
B
Retailer 9
-
$1,468 NZD
View
B
Retailer 10
-
$1,542 NZD
View
B
Retailer 11
-
$1,723 NZD
View
Retailer 12
-
$1,820 NZD
View
Price last confirmed 33 days ago
B
Retailer 13
-
$1,867 NZD
View
B
Retailer 14
-
$2,796 NZD
View
Most Expensive
NZ Jewellers
aaa7ece4-b605-4934-88eb-65673b97ee0a · Sep 30
$3,797 NZD
$2,105 USD
View
Price last confirmed 37 days ago
14 more retailers have this diamond
Prices start from $1,117 NZDSave up to $1,679 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
$1,117 NZD