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Round|Natural|GIA

2.51ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6525293492

Certificate GIA 6525293492

Diamond specifications and retailer prices

From €11,141 EUR
As of November 1, 2026
Save €7,966 EUR (42%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €19,108 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6525293492. Listed at 15 retailers as of November 1, 2026, with prices from €11,141 to €19,108, a €7,966 spread on the same certified stone. MOH London lists it at €19,108. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6525293492
Dimensions8.67 × 8.62 × 5.41 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
8.67 mm8.62 mm2.51 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6525293492
Side View
Table 55.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.6%

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 1
Current: €19,108 EUR|Low: €11,141 EUR|High: €19,389 EUR|Avg: €14,380 EUR|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 6€11,141 EUR
Retailer 7€11,381 EUR
Retailer 4€12,880 EUR
Retailer 8€13,355 EUR
Retailer 2€14,038 EUR
Retailer 5€15,337 EUR
Retailer 3€16,844 EUR
MOH London€19,108 EUR

36 data points across 8 retailers

15 retailers€11,141 EUR to €19,108 EUR

A
Cheapest Retailer
-
€11,141 EUR
A
Retailer 2
-
€11,381 EUR
View
B+
Retailer 3
-
€12,050 EUR
View
Retailer 4
-
€12,267 EUR
View
Price last confirmed 8 days ago
B+
Retailer 5
-
€12,880 EUR
View
B+
Retailer 6
-
€13,085 EUR
View
B+
Retailer 7
-
€13,289 EUR
View
B+
Retailer 8
-
€13,355 EUR
View
B+
Retailer 9
-
€13,411 EUR
View
B+
Retailer 10
-
€13,801 EUR
View
B+
Retailer 11
-
€14,038 EUR
View
B
Retailer 12
-
€15,337 EUR
View
B
Retailer 13
-
€16,844 EUR
View
B
Retailer 14
-
€17,379 EUR
View
Most Expensive
B
MOH London
C28A85AE2 · Nov 4
€19,108 EUR
£16,887 GBP
View
14 more retailers have this diamond
Prices start from €11,141 EURSave up to €7,966 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
€11,141 EUR