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Oval|Natural|GIA

2.51ct K SI2 Oval Natural Diamond

ID • K/SI2 • GIA 6532802181

Certificate GIA 6532802181

Diamond specifications and retailer prices

From $12,995 AUD
As of November 4, 2026
Save $6,593 AUD (34%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $23,509 AUD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 2.51ct natural oval diamond

This 2.51ct natural oval sits in the two to three carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6532802181. Listed at 8 retailers as of November 1, 2026, with a 51% 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

2.51
Carat
K
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6532802181
Dimensions10.33 × 7.62 × 4.72 mm
L/W Ratio1.36
Top View
10.33 mm7.62 mm2.51 ctK / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6532802181
Side View
Table 64.0%CrownGirdle: ThickPavilionCulet: NoneDepth 62.0%

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 4
Current: $12,995 AUD|Low: $12,646 AUD|High: $19,825 AUD|Avg: $15,481 AUD|-0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 4, 2026
Retailer 5$12,646 AUD
Retailer 1$12,995 AUD
Retailer 2$15,353 AUD
Retailer 4$16,645 AUD
Retailer 3$19,588 AUD

42 data points across 5 retailers

8 retailers$12,995 AUD to $19,588 AUD

Retailer 1
-
$12,975 AUD
Price last confirmed 29 days ago
A
Retailer 2
-
$12,995 AUD
View
Retailer 3
-
$14,056 AUD
View
Price last confirmed 29 days ago
Retailer 4
-
$14,272 AUD
View
Price last confirmed 38 days ago
A
Retailer 5
-
$15,353 AUD
View
Retailer 6
-
$16,218 AUD
View
Price last confirmed 38 days ago
B+
Retailer 7
-
$19,588 AUD
View
Most Expensive
NZ Jewellers
5b0cd97f-91dc-4a41-b17e-b9c794b38073 · Sep 30
$23,509 AUD
$16,153 USD
View
Price last confirmed 37 days ago
7 more retailers have this diamond
Prices start from $12,995 AUDSave up to $6,593 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
2.51ct Oval
$12,995 AUD