CaratHunter
Plans
Round|Natural|GIA

2.51ct K VS1 Round Natural Diamond

EX • K/VS1 • GIA 6551658112

Certificate GIA 6551658112

Diamond specifications and retailer prices

From $11,517 USD
As of November 3, 2026
Save $9,129 USD (44%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $20,646 USD 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 $11,517 to $20,646, a $9,129 spread on the same certified stone. With Clarity lists it at $20,646. 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
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: $12,539 USD|Low: $11,517 USD|High: $21,715 USD|Avg: $14,359 USD|-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$11,517 USD
Retailer 8$11,892 USD
Retailer 2$12,251 USD
Retailer 1$12,539 USD
Retailer 7$12,735 USD
Retailer 5$13,780 USD
Retailer 9$14,274 USD
Retailer 4$14,669 USD
Retailer 3$14,961 USD
With Clarity$20,646 USD

43 data points across 10 retailers

11 retailers$11,517 USD to $20,646 USD

A
Cheapest Retailer
-
$11,517 USD
A
Retailer 2
-
$11,892 USD
View
A
Retailer 3
-
$12,251 USD
View
A
Retailer 4
-
$12,539 USD
View
A
Retailer 5
-
$12,735 USD
View
Retailer 6
-
$13,780 USD
View
Price last confirmed 9 days ago
A
Retailer 7
-
$14,274 USD
View
A
Retailer 8
-
$14,669 USD
View
A
Retailer 9
-
$14,961 USD
View
B+
Retailer 10
-
$16,381 USD
View
Most Expensive
B
With Clarity
6551658112 · Nov 5
$20,646 USD
View
10 more retailers have this diamond
Prices start from $11,517 USDSave up to $9,129 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
$11,517 USD