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Round|Natural|GIA

2.51ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 5516107542

Certificate GIA 5516107542

Diamond specifications and retailer prices

From $17,297 CAD
As of November 1, 2026
Save $13,120 CAD (43%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $30,417 CAD at MOH London · As of November 2, 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 5516107542. Listed at 13 retailers as of November 1, 2026, with prices from $17,297 to $30,417, a $13,120 spread on the same certified stone. MOH London lists it at $30,417. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 5516107542
Dimensions8.71 × 8.67 × 5.41 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
8.71 mm8.67 mm2.51 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5516107542
Side View
Table 56.0%Crown 35.5°Girdle: MediumPavilion 40.8°Culet: NoneDepth 62.3%

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 1
Current: $30,417 CAD|Low: $17,297 CAD|High: $30,782 CAD|Avg: $24,202 CAD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 5$17,297 CAD
Retailer 3$20,450 CAD
Retailer 6$20,774 CAD
Retailer 4$24,379 CAD
Retailer 2$26,743 CAD
Retailer 7$27,591 CAD
MOH London$30,417 CAD

43 data points across 7 retailers

13 retailers$17,297 CAD to $30,417 CAD

A
Cheapest Retailer
-
$17,297 CAD
A
Retailer 2
-
$18,069 CAD
View
B+
Retailer 3
-
$19,126 CAD
View
Retailer 4
-
$19,476 CAD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$19,638 CAD
View
B+
Retailer 6
-
$20,450 CAD
View
B+
Retailer 7
-
$20,774 CAD
View
B+
Retailer 8
-
$21,098 CAD
View
B+
Retailer 9
-
$21,910 CAD
View
B
Retailer 10
-
$24,379 CAD
View
B
Retailer 11
-
$26,743 CAD
View
B
Retailer 12
-
$27,591 CAD
View
Most Expensive
B
MOH London
3665BC12E · Nov 2
$30,417 CAD
£17,149 GBP
View
12 more retailers have this diamond
Prices start from $17,297 CADSave up to $13,120 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
$17,297 CAD