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Oval|Natural|GIA

0.51ct F SI1 Oval Natural Diamond

GD • F/SI1 • GIA 2557293700

Certificate GIA 2557293700

Diamond specifications and retailer prices

From $1,180 NZD
As of November 6, 2026
Save $1,773 NZD (60%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $4,010 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 F colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2557293700. 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
F
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557293700
Dimensions7.10 × 4.35 × 2.64 mm
L/W Ratio1.63
Key to symbols
Cloud, Feather, Crystal
Top View
7.10 mm4.35 mm0.51 ctF / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557293700
Side View
Table 58.0%CrownGirdlePavilionCulet: NoneDepth 60.8%

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: $1,806 NZD|Low: $1,081 NZD|High: $2,989 NZD|Avg: $1,621 NZD|+1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 8$1,180 NZD
Retailer 10$1,223 NZD
Retailer 11$1,230 NZD
Retailer 3$1,279 NZD
Retailer 4$1,279 NZD
Retailer 2$1,476 NZD
Retailer 5$1,555 NZD
Retailer 12$1,605 NZD
Retailer 1$1,806 NZD
Retailer 9$1,923 NZD
Retailer 6$1,973 NZD
Retailer 7$2,953 NZD

42 data points across 12 retailers

15 retailers$1,180 NZD to $2,953 NZD

B+
Cheapest Retailer
-
$1,180 NZD
Final sale: no returns
B+
Retailer 2
-
$1,223 NZD
View
Retailer 3
-
$1,279 NZD
View
Price last confirmed 30 days ago
Retailer 4
-
$1,279 NZD
View
Price last confirmed 30 days ago
Retailer 5
-
$1,328 NZD
View
Price last confirmed 39 days ago
Retailer 6
-
$1,476 NZD
View
Price last confirmed 39 days ago
B
Retailer 7
-
$1,515 NZD
View
B
Retailer 8
-
$1,517 NZD
View
B
Retailer 9
-
$1,555 NZD
View
B
Retailer 10
-
$1,605 NZD
View
B
Retailer 11
-
$1,806 NZD
View
Retailer 12
-
$1,923 NZD
View
Price last confirmed 34 days ago
B
Retailer 13
-
$1,973 NZD
View
B
Retailer 14
-
$2,953 NZD
View
Most Expensive
NZ Jewellers
71cc3dde-595c-41e9-a2c4-aafdcb9acb2c · Sep 30
$4,010 NZD
$2,223 USD
View
Price under review
14 more retailers have this diamond
Prices start from $1,180 NZDSave up to $1,773 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
$1,180 NZD