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2.59ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 623473359

Shape and cutting style on the report: Round brilliant

Certificate IGI 623473359

Diamond specifications and retailer prices

From $8,590 USD
As of November 1, 2026
Save $5,688 USD (40%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $14,278 USD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 2.59ct natural round diamond

This 2.59ct 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 IGI 623473359. Listed at 16 retailers as of November 1, 2026, with prices from $8,590 to $14,278, a $5,688 spread on the same certified stone. NZ Jewellers lists it at $14,278. 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

2.59
Carat
K
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle41°
OriginNatural
Grading LabIGI
CertificateIGI 623473359
Dimensions8.77 × 8.73 × 5.44 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
8.77 mm8.73 mm2.59 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 623473359
Side View
Table 58.0%Crown 35.8°Girdle: MediumPavilion 41°Culet: NoneDepth 62.2%

Caratlytics Score

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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: $14,278 USD|Low: $8,529 USD|High: $16,813 USD|Avg: $10,719 USD|-4.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 6, 2026
Retailer 7$8,590 USD
Retailer 5$8,610 USD
Retailer 14$8,853 USD
Retailer 6$9,279 USD
Retailer 8$9,337 USD
Retailer 13$9,370 USD
Retailer 2$9,803 USD
Retailer 15$10,244 USD
Retailer 3$10,402 USD
Retailer 12$10,478 USD
Retailer 10$10,724 USD
Retailer 9$11,763 USD
Retailer 4$11,820 USD
Retailer 11$13,343 USD
NZ Jewellers$14,278 USD

21 data points across 15 retailers

16 retailers$8,590 USD to $14,278 USD

A
Cheapest Retailer
-
$8,590 USD
A
Retailer 2
-
$8,610 USD
View
A
Retailer 3
-
$8,853 USD
View
Retailer 4
-
$9,279 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$9,337 USD
View
A
Retailer 6
-
$9,370 USD
View
A
Retailer 7
-
$9,803 USD
View
Retailer 8
-
$10,055 USD
View
Price last confirmed 11 days ago
A
Retailer 9
-
$10,244 USD
View
A
Retailer 10
-
$10,402 USD
View
A
Retailer 11
-
$10,478 USD
View
A
Retailer 12
-
$10,724 USD
View
A
Retailer 13
-
$11,763 USD
View
A
Retailer 14
-
$11,820 USD
View
B+
Retailer 15
-
$13,343 USD
View
Most Expensive
B+
NZ Jewellers
d94aae01-ede9-4fba-945c-ab6c06e8b425 · Nov 5
$14,278 USD
View
15 more retailers have this diamond
Prices start from $8,590 USDSave up to $5,688 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
2.59ct Round
$8,590 USD