Oval|Natural|GIA

0.51ct F SI2 Oval Natural Diamond

GD • F/SI2 • GIA 2537721327

Certificate GIA 2537721327

Diamond specifications and retailer prices

From $803 NZD
As of November 6, 2026
Save $1,723 NZD (68%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $3,436 NZD at NZ Jewellers · As of October 23, 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 SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2537721327. Listed at 19 retailers as of November 4, 2026, with a 215% 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
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2537721327
Dimensions6.36 × 4.50 × 2.78 mm
L/W Ratio1.41
Top View
6.36 mm4.50 mm0.51 ctF / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 2537721327
Side View
Table 56.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 61.7%

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: $803 NZD|Low: $691 NZD|High: $2,560 NZD|Avg: $1,367 NZD|-2.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 1$803 NZD
Retailer 6$1,010 NZD
Retailer 7$1,118 NZD
Retailer 5$1,180 NZD
Retailer 8$1,295 NZD
Retailer 2$1,333 NZD
Retailer 4$1,616 NZD
Retailer 3$2,525 NZD

41 data points across 8 retailers

19 retailers$803 NZD to $2,525 NZD

A
Cheapest Retailer
-
$803 NZD
B+
Retailer 2
-
$1,010 NZD
View
Final sale: no returns
B+
Retailer 3
-
$1,037 NZD
View
Retailer 4
-
$1,097 NZD
View
Price last confirmed 39 days ago
Retailer 5
-
$1,097 NZD
View
Price last confirmed 19 days ago
Retailer 6
-
$1,118 NZD
View
Price last confirmed 30 days ago
Retailer 7
-
$1,180 NZD
View
Price last confirmed 21 days ago
Retailer 8
-
$1,180 NZD
View
Price last confirmed 21 days ago
Retailer 9
-
$1,265 NZD
View
Price last confirmed 39 days ago
B+
Retailer 10
-
$1,265 NZD
View
Retailer 11
-
$1,265 NZD
View
Price last confirmed 14 days ago
B+
Retailer 12
-
$1,295 NZD
View
B+
Retailer 13
-
$1,333 NZD
View
B+
Retailer 14
-
$1,333 NZD
View
B
Retailer 15
-
$1,616 NZD
View
C
Retailer 16
-
$2,525 NZD
View
Retailer 17
-
$3,436 NZD
View
Price last confirmed 39 days ago
Retailer 18
-
$3,436 NZD
View
Price last confirmed 20 days ago
Most Expensive
NZ Jewellers
81c7a6b7-caf1-4490-9eae-d224d2f4bbd6 · Oct 23
$3,436 NZD
$1,905 USD
View
Price last confirmed 14 days ago
18 more retailers have this diamond
Prices start from $803 NZDSave up to $1,723 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
$803 NZD