Round|Natural|GIA

2.51ct K VS1 Round Natural Diamond

EX • K/VS1

Diamond specifications and retailer prices

From $13,878 USD
As of November 4, 2026
Save $8,022 USD (37%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $21,900 USD at NZ Jewellers · As of November 5, 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. Listed at 9 retailers as of November 4, 2026, with prices from $13,878 to $21,900, a $8,022 spread on the same certified stone. NZ Jewellers lists it at $21,900. 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
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
Dimensions8.60 × 8.63 × 5.45 mm
L/W Ratio1.00
Top View
8.60 mm8.63 mm2.51 ctK / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA
Side View
Table 56.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 63.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $21,900 USD|Low: $13,878 USD|High: $22,360 USD|Avg: $17,423 USD|-2.1%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 8$13,878 USD
Retailer 9$15,675 USD
Retailer 7$16,605 USD
Retailer 6$16,747 USD
Retailer 4$16,780 USD
Retailer 3$17,193 USD
Retailer 2$17,391 USD
Retailer 5$18,467 USD
NZ Jewellers$21,900 USD

14 data points across 9 retailers

9 retailers$13,878 USD to $21,900 USD

A
Cheapest Retailer
-
$13,878 USD
Retailer 2
-
$15,675 USD
View
Price last confirmed 8 days ago
B+
Retailer 3
-
$16,605 USD
View
B+
Retailer 4
-
$16,747 USD
View
B+
Retailer 5
-
$16,780 USD
View
B+
Retailer 6
-
$17,193 USD
View
B+
Retailer 7
-
$17,391 USD
View
B+
Retailer 8
-
$18,467 USD
View
Most Expensive
B
NZ Jewellers
af394ada-1d6f-442d-99f6-ff6a02cdd7de · Nov 5
$21,900 USD
View
8 more retailers have this diamond
Prices start from $13,878 USDSave up to $8,022 USD

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
$13,878 USD