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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 €10,167 EUR
As of November 4, 2026
Save €7,840 EUR (44%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €18,007 EUR 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 €10,167 to €18,007, a €7,840 spread on the same certified stone. MOH London lists it at €18,007. 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
Colour
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: €18,007 EUR|Low: €9,710 EUR|High: €18,273 EUR|Avg: €12,311 EUR|-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€9,710 EUR
Retailer 5€10,167 EUR
Retailer 11€10,446 EUR
Retailer 9€10,727 EUR
Retailer 8€11,561 EUR
Retailer 2€12,131 EUR
Retailer 7€12,385 EUR
Retailer 10€12,524 EUR
Retailer 6€13,827 EUR
Retailer 4€13,901 EUR
MOH London€18,007 EUR

33 data points across 11 retailers

10 retailers€10,167 EUR to €18,007 EUR

A
Cheapest Retailer
-
€10,167 EUR
A
Retailer 2
-
€10,727 EUR
View
Retailer 3
-
€11,561 EUR
View
Price last confirmed 8 days ago
B+
Retailer 4
-
€12,030 EUR
View
B+
Retailer 5
-
€12,131 EUR
View
B+
Retailer 6
-
€12,385 EUR
View
B+
Retailer 7
-
€12,524 EUR
View
B+
Retailer 8
-
€13,827 EUR
View
B+
Retailer 9
-
€13,901 EUR
View
Most Expensive
B
MOH London
44FDDC741 · Nov 4
€18,007 EUR
£15,914 GBP
View
9 more retailers have this diamond
Prices start from €10,167 EURSave up to €7,840 EUR

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
€10,167 EUR