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Round|Natural|GIA

2.51ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 2556787346

Certificate GIA 2556787346

Diamond specifications and retailer prices

From $15,937 CAD
As of November 4, 2026
Save $12,290 CAD (44%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $28,226 CAD at MOH London · As of November 4, 2026
View at MOH London

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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2556787346. Listed at 10 retailers as of November 4, 2026, with prices from $15,937 to $28,226, a $12,290 spread on the same certified stone. MOH London lists it at $28,226. 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
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2556787346
Dimensions8.60 × 5.41 × 5.41 mm
L/W Ratio1.59
Culet sizeNone
Top View
8.60 mm5.41 mm2.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556787346
Side View
Table 56.0%Crown 36.5°Girdle: THN-STKPavilion 40.6°Culet: NoneDepth 62.6%

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: $28,226 CAD|Low: $15,220 CAD|High: $28,643 CAD|Avg: $19,298 CAD|-1.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 3$15,220 CAD
Retailer 5$15,937 CAD
Retailer 11$16,375 CAD
Retailer 9$16,815 CAD
Retailer 8$18,122 CAD
Retailer 2$19,016 CAD
Retailer 7$19,414 CAD
Retailer 10$19,632 CAD
Retailer 6$21,674 CAD
Retailer 4$21,791 CAD
MOH London$28,226 CAD

33 data points across 11 retailers

10 retailers$15,937 CAD to $28,226 CAD

A
Cheapest Retailer
-
$15,937 CAD
A
Retailer 2
-
$16,815 CAD
View
Retailer 3
-
$18,122 CAD
View
Price last confirmed 8 days ago
B+
Retailer 4
-
$18,858 CAD
View
B+
Retailer 5
-
$19,016 CAD
View
B+
Retailer 6
-
$19,414 CAD
View
B+
Retailer 7
-
$19,632 CAD
View
B+
Retailer 8
-
$21,674 CAD
View
B+
Retailer 9
-
$21,791 CAD
View
Most Expensive
B
MOH London
44FDDC741 · Nov 4
$28,226 CAD
£15,914 GBP
View
9 more retailers have this diamond
Prices start from $15,937 CADSave up to $12,290 CAD

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
$15,937 CAD