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Oval|Natural|GIA

0.51ct K SI2 Oval Natural Diamond

VG • K/SI2 • GIA 2376441621

Certificate GIA 2376441621

Diamond specifications and retailer prices

From $704 AUD
As of November 5, 2026
Save $921 AUD (57%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,700 AUD at NZ Jewellers · As of November 5, 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2376441621. Listed at 12 retailers as of November 1, 2026, with a 131% 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
K
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2376441621
Dimensions6.53 × 4.36 × 2.76 mm
L/W Ratio1.50
Top View
6.53 mm4.36 mm0.51 ctK / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2376441621
Side View
Table 60.0%CrownGirdle: ThickPavilionCulet: NoneDepth 63.3%

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 5
Current: $2,700 AUD|Low: $704 AUD|High: $2,700 AUD|Avg: $954 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 6, 2026
Retailer 12$704 AUD
Retailer 5$709 AUD
Retailer 9$758 AUD
Retailer 14$758 AUD
Retailer 6$777 AUD
Retailer 4$800 AUD
Retailer 13$812 AUD
Retailer 2$835 AUD
Retailer 8$865 AUD
Retailer 3$888 AUD
Retailer 15$895 AUD
Retailer 10$1,058 AUD
Retailer 7$1,070 AUD
Retailer 11$1,626 AUD
NZ Jewellers$2,700 AUD

30 data points across 15 retailers

12 retailers$704 AUD to $1,626 AUD

A
Cheapest Retailer
-
$704 AUD
B+
Retailer 2
-
$758 AUD
View
Retailer 3
-
$758 AUD
View
Price last confirmed 8 days ago
B+
Retailer 4
-
$800 AUD
View
B+
Retailer 5
-
$812 AUD
View
B+
Retailer 6
-
$835 AUD
View
B
Retailer 7
-
$865 AUD
View
B
Retailer 8
-
$888 AUD
View
B
Retailer 9
-
$895 AUD
View
B
Retailer 10
-
$1,058 AUD
View
B
Retailer 11
-
$1,626 AUD
View
Most Expensive
NZ Jewellers
3b063a02-d0ae-491e-bb58-4125d27533c2 · Nov 5
$2,700 AUD
$1,855 USD
View
Price under review
11 more retailers have this diamond
Prices start from $704 AUDSave up to $921 AUD

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
$704 AUD