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Round|Natural|GIA

2.50ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6551502523

Certificate GIA 6551502523

Diamond specifications and retailer prices

From €11,376 EUR
As of November 6, 2026
Save €6,193 EUR (35%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: €17,569 EUR at MOH London · As of November 4, 2026
View at MOH London

About this 2.5ct natural round diamond

This 2.5ct natural round sits in the two to three carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6551502523. Listed at 8 retailers as of November 4, 2026, with prices from €11,376 to €17,569, a €6,193 spread on the same certified stone. MOH London lists it at €17,569. 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

2.50
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6551502523
Dimensions8.53 × 8.60 × 5.45 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
8.53 mm8.60 mm2.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6551502523
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 63.6%

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 6
Current: €17,569 EUR|Low: €11,833 EUR|High: €17,828 EUR|Avg: €14,239 EUR|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 4€11,834 EUR
Retailer 2€12,907 EUR
Retailer 5€13,306 EUR
Retailer 3€15,488 EUR
MOH London€17,569 EUR

38 data points across 5 retailers

8 retailers€11,376 EUR to €17,569 EUR

A
Cheapest Retailer
-
€11,376 EUR
A
Retailer 2
-
€11,834 EUR
View
B+
Retailer 3
-
€12,079 EUR
View
B+
Retailer 4
-
€12,907 EUR
View
B+
Retailer 5
-
€13,306 EUR
View
B
Retailer 6
-
€15,488 EUR
View
B
Retailer 7
-
€15,979 EUR
View
Most Expensive
B
MOH London
31C40BC0C · Nov 4
€17,569 EUR
£15,527 GBP
View
7 more retailers have this diamond
Prices start from €11,376 EURSave up to €6,193 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
2.50ct Round
€11,376 EUR