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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 $12,768 USD
As of November 6, 2026
Save $6,951 USD (35%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $19,719 USD 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 $12,768 to $19,719, a $6,951 spread on the same certified stone. MOH London lists it at $19,719. 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
Color
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: $19,719 USD|Low: $13,281 USD|High: $20,010 USD|Avg: $15,982 USD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 4$13,282 USD
Retailer 2$14,487 USD
Retailer 5$14,935 USD
Retailer 3$17,384 USD
MOH London$19,719 USD

38 data points across 5 retailers

8 retailers$12,768 USD to $19,719 USD

A
Cheapest Retailer
-
$12,768 USD
A
Retailer 2
-
$13,282 USD
View
B+
Retailer 3
-
$13,557 USD
View
B+
Retailer 4
-
$14,487 USD
View
B+
Retailer 5
-
$14,935 USD
View
B
Retailer 6
-
$17,384 USD
View
B
Retailer 7
-
$17,935 USD
View
Most Expensive
B
MOH London
31C40BC0C · Nov 4
$19,719 USD
£15,527 GBP
View
7 more retailers have this diamond
Prices start from $12,768 USDSave up to $6,951 USD

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
$12,768 USD