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Oval|Natural|GIA

2.51ct K SI2 Oval Natural Diamond

EX • K/SI2 • GIA 2546456911

Certificate GIA 2546456911

Diamond specifications and retailer prices

From $16,874 AUD
As of November 4, 2026
Save $13,142 AUD (44%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $30,016 AUD at NZ Jewellers · As of November 5, 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 2546456911. Listed at 9 retailers as of November 4, 2026, with prices from $16,874 to $30,016, a $13,142 spread on the same certified stone. NZ Jewellers lists it at $30,016. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.85°
Pavilion angle39.63°
OriginNatural
Grading LabGIA
CertificateGIA 2546456911
Dimensions11.99 × 7.17 × 4.42 mm
L/W Ratio1.67
Top View
11.99 mm7.17 mm2.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2546456911
Side View
Table 59.0%Crown 37.85°GirdlePavilion 39.63°Culet: NoneDepth 61.6%

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: $30,016 AUD|Low: $13,564 AUD|High: $30,016 AUD|Avg: $21,704 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
November 6, 2026
Retailer 4$13,564 AUD
Retailer 9$16,874 AUD
Retailer 8$19,211 AUD
Retailer 5$19,217 AUD
Retailer 10$19,511 AUD
Retailer 11$20,261 AUD
Retailer 2$21,178 AUD
Retailer 7$22,685 AUD
Retailer 12$23,119 AUD
Retailer 3$25,683 AUD
Retailer 6$28,051 AUD
NZ Jewellers$30,016 AUD

31 data points across 12 retailers

9 retailers$16,874 AUD to $30,016 AUD

A
Cheapest Retailer
-
$16,874 AUD
B+
Retailer 2
-
$19,211 AUD
View
B+
Retailer 3
-
$19,217 AUD
View
B+
Retailer 4
-
$19,511 AUD
View
B+
Retailer 5
-
$20,261 AUD
View
B+
Retailer 6
-
$21,178 AUD
View
B
Retailer 7
-
$22,685 AUD
View
B
Retailer 8
-
$28,051 AUD
View
Most Expensive
B
NZ Jewellers
4ec45a73-6ca0-4e56-a7e0-2fded4eaf716 · Nov 5
$30,016 AUD
$20,624 USD
View
8 more retailers have this diamond
Prices start from $16,874 AUDSave up to $13,142 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
$16,874 AUD