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Round|Natural|GIA

2.50ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6561216159

Certificate GIA 6561216159

Diamond specifications and retailer prices

From $15,275 NZD
As of November 4, 2026
Save $13,923 NZD (48%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $29,199 NZD 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 6561216159. Listed at 17 retailers as of November 4, 2026, with prices from $15,275 to $29,199, a $13,923 spread on the same certified stone. NZ Jewellers lists it at $29,199. 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
FluorescenceNone
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 6561216159
Dimensions8.61 × 8.66 × 5.41 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Knot, Crystal, Needle
Top View
8.61 mm8.66 mm2.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6561216159
Side View
Table 58.0%Crown 35°Girdle: Slightly ThickPavilion 41.4°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 4
Current: $20,048 NZD|Low: $15,254 NZD|High: $27,690 NZD|Avg: $21,014 NZD|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 6$15,275 NZD
Retailer 4$18,863 NZD
Retailer 7$19,968 NZD
Retailer 1$20,048 NZD
Retailer 3$20,961 NZD
Retailer 2$24,056 NZD
Retailer 5$27,288 NZD

29 data points across 7 retailers

17 retailers$15,275 NZD to $29,199 NZD

A
Cheapest Retailer
-
$15,275 NZD
A
Retailer 2
-
$17,942 NZD
View
A
Retailer 3
-
$18,396 NZD
View
A
Retailer 4
-
$18,863 NZD
View
A
Retailer 5
-
$19,088 NZD
View
Retailer 6
-
$19,338 NZD
View
Price last confirmed 12 days ago
A
Retailer 7
-
$19,577 NZD
View
A
Retailer 8
-
$19,968 NZD
View
A
Retailer 9
-
$20,048 NZD
View
A
Retailer 10
-
$20,950 NZD
View
A
Retailer 11
-
$20,961 NZD
View
A
Retailer 12
-
$21,272 NZD
View
A
Retailer 13
-
$21,445 NZD
View
B+
Retailer 14
-
$24,056 NZD
View
B+
Retailer 15
-
$24,173 NZD
View
B+
Retailer 16
-
$27,288 NZD
View
Most Expensive
B
NZ Jewellers
d27d4636-6f5d-43e4-a4e7-2bc26c05caff · Nov 5
$29,199 NZD
$16,414 USD
View
16 more retailers have this diamond
Prices start from $15,275 NZDSave up to $13,923 NZD

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
$15,275 NZD