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Round|Natural|GIA

2.51ct K VS1 Round Natural Diamond

EX • K/VS1 • GIA 6551658112

Certificate GIA 6551658112

Diamond specifications and retailer prices

From $16,452 AUD
As of November 3, 2026
Save $13,041 AUD (44%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $29,493 AUD at With Clarity · As of November 5, 2026
View at With Clarity

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 6551658112. Listed at 11 retailers as of November 3, 2026, with prices from $16,452 to $29,493, a $13,041 spread on the same certified stone. With Clarity lists it at $29,493. 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
FluorescenceNone
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6551658112
Dimensions8.60 × 5.41 × 5.41 mm
L/W Ratio1.59
Culet sizeNone
Top View
8.60 mm5.41 mm2.51 ctK / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551658112
Side View
Table 58.0%Crown 36.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.8%

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 3
Current: $17,912 AUD|Low: $16,452 AUD|High: $31,020 AUD|Avg: $20,512 AUD|-3.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
With Clarity
November 5, 2026
Retailer 6$16,452 AUD
Retailer 8$16,988 AUD
Retailer 2$17,501 AUD
Retailer 1$17,912 AUD
Retailer 7$18,192 AUD
Retailer 5$19,685 AUD
Retailer 9$20,390 AUD
Retailer 4$20,955 AUD
Retailer 3$21,372 AUD
With Clarity$29,493 AUD

43 data points across 10 retailers

11 retailers$16,452 AUD to $29,493 AUD

A
Cheapest Retailer
-
$16,452 AUD
A
Retailer 2
-
$16,988 AUD
View
A
Retailer 3
-
$17,501 AUD
View
A
Retailer 4
-
$17,912 AUD
View
A
Retailer 5
-
$18,192 AUD
View
Retailer 6
-
$19,685 AUD
View
Price last confirmed 9 days ago
A
Retailer 7
-
$20,390 AUD
View
A
Retailer 8
-
$20,955 AUD
View
A
Retailer 9
-
$21,372 AUD
View
B+
Retailer 10
-
$23,400 AUD
View
Most Expensive
B
With Clarity
6551658112 · Nov 5
$29,493 AUD
$20,646 USD
View
10 more retailers have this diamond
Prices start from $16,452 AUDSave up to $13,041 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
$16,452 AUD