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Round|Natural|GIA

2.51ct K VS1 Round Natural Diamond

EX • K/VS1 • GIA 5242066430

Certificate GIA 5242066430

Diamond specifications and retailer prices

From $16,288 AUD
As of November 5, 2026
Save $11,504 AUD (41%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $28,059 AUD at NZ Jewellers · As of October 3, 2026
View at NZ Jewellers

About this 2.51ct natural round diamond

This 2.51ct natural round sits in the two to three carat band, graded K colour (faint-tinted) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by GIA 5242066430. Listed at 14 retailers as of November 4, 2026, with a 71% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. At this carat range, natural pricing varies dramatically across retailers, so the cross-retailer spread on this exact stone is your single best indicator of fair price.

The 4Cs

2.51
Carat
K
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 5242066430
Dimensions8.57 × 8.64 × 5.39 mm
L/W Ratio1.01
Key to symbols
Crystal, Pinpoint
Top View
8.57 mm8.64 mm2.51 ctK / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 5242066430
Side View
Table 58.0%CrownGirdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 62.6%

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 5
Current: $28,059 AUD|Low: $14,354 AUD|High: $28,696 AUD|Avg: $20,228 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 5$14,354 AUD
Retailer 14$16,288 AUD
Retailer 6$16,335 AUD
Retailer 13$16,555 AUD
Retailer 3$17,063 AUD
Retailer 15$17,556 AUD
Retailer 10$18,715 AUD
Retailer 8$19,980 AUD
Retailer 12$20,073 AUD
Retailer 7$20,132 AUD
Retailer 4$20,453 AUD
Retailer 9$21,366 AUD
Retailer 2$24,500 AUD
Retailer 11$27,791 AUD
NZ Jewellers$28,059 AUD

21 data points across 15 retailers

14 retailers$16,288 AUD to $27,791 AUD

Retailer 1
-
$14,354 AUD
Price last confirmed 20 days ago
A
Retailer 2
-
$16,288 AUD
View
Retailer 3
-
$16,335 AUD
View
Price last confirmed 31 days ago
A
Retailer 4
-
$16,555 AUD
View
A
Retailer 5
-
$17,063 AUD
View
A
Retailer 6
-
$17,556 AUD
View
A
Retailer 7
-
$18,715 AUD
View
A
Retailer 8
-
$19,980 AUD
View
A
Retailer 9
-
$20,073 AUD
View
Retailer 10
-
$20,132 AUD
View
Price last confirmed 33 days ago
A
Retailer 11
-
$21,366 AUD
View
B+
Retailer 12
-
$24,500 AUD
View
B
Retailer 13
-
$27,791 AUD
View
Most Expensive
NZ Jewellers
280ed4cb-531f-4d39-93fd-747eb3990433 · Oct 3
$28,059 AUD
$19,642 USD
View
Price last confirmed 33 days ago
13 more retailers have this diamond
Prices start from $16,288 AUDSave up to $11,504 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 Round
$16,288 AUD