Round|Natural|GIA

2.50ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6555439015

Certificate GIA 6555439015

Diamond specifications and retailer prices

From $11,965 USD
As of November 6, 2026
Save $6,792 USD (36%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $18,757 USD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

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 6555439015. Listed at 11 retailers as of November 5, 2026, with prices from $11,965 to $18,757, a $6,792 spread on the same certified stone. NZ Jewellers lists it at $18,757. 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
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555439015
Dimensions8.65 × 8.71 × 5.36 mm
L/W Ratio1.01
Culet sizeNone
Top View
8.65 mm8.71 mm2.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555439015
Side View
Table 55.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 61.8%

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: $18,757 USD|Low: $11,965 USD|High: $18,757 USD|Avg: $14,292 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 5$11,965 USD
Retailer 9$12,423 USD
Retailer 8$12,425 USD
Retailer 2$12,878 USD
Retailer 3$13,251 USD
Retailer 11$13,458 USD
Retailer 10$13,975 USD
Retailer 6$14,071 USD
Retailer 4$15,453 USD
Retailer 7$17,529 USD
NZ Jewellers$18,757 USD

29 data points across 11 retailers

11 retailers$11,965 USD to $18,757 USD

A
Cheapest Retailer
-
$11,965 USD
Retailer 2
-
$12,423 USD
View
Price last confirmed 8 days ago
A
Retailer 3
-
$12,425 USD
View
A
Retailer 4
-
$12,878 USD
View
B+
Retailer 5
-
$13,251 USD
View
B+
Retailer 6
-
$13,458 USD
View
B+
Retailer 7
-
$13,975 USD
View
B+
Retailer 8
-
$14,071 USD
View
B+
Retailer 9
-
$15,453 USD
View
B
Retailer 10
-
$17,529 USD
View
Most Expensive
B
NZ Jewellers
cc57180c-0f92-4f30-aad4-34c218e72643 · Nov 5
$18,757 USD
View
10 more retailers have this diamond
Prices start from $11,965 USDSave up to $6,792 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
$11,965 USD