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2.55ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 828654342

Shape and cutting style on the report: Round brilliant

Certificate IGI 828654342

Diamond specifications and retailer prices

From $12,372 NZD
As of November 5, 2026
Save $15,994 NZD (56%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $28,366 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 2.55ct natural round diamond

This 2.55ct 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 828654342. Listed at 16 retailers as of November 5, 2026, with prices from $12,372 to $28,366, a $15,994 spread on the same certified stone. NZ Jewellers lists it at $28,366. 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

2.55
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabIGI
CertificateIGI 828654342
Dimensions8.74 × 8.70 × 5.43 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
8.74 mm8.70 mm2.55 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 828654342
Side View
Table 60.0%Crown 35°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.2%

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 5
Current: $28,366 NZD|Low: $12,372 NZD|High: $28,960 NZD|Avg: $17,845 NZD|-2.1%
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 11$12,372 NZD
Retailer 8$14,423 NZD
Retailer 5$14,644 NZD
Retailer 4$15,672 NZD
Retailer 6$15,688 NZD
Retailer 7$15,839 NZD
Retailer 2$16,231 NZD
Retailer 13$16,960 NZD
Retailer 3$17,254 NZD
Retailer 12$17,446 NZD
Retailer 15$17,561 NZD
Retailer 9$19,475 NZD
Retailer 10$19,570 NZD
Retailer 14$23,617 NZD
NZ Jewellers$28,366 NZD

17 data points across 15 retailers

16 retailers$12,372 NZD to $28,366 NZD

A
Cheapest Retailer
-
$12,372 NZD
Retailer 2
-
$12,812 NZD
View
Price last confirmed 23 days ago
A
Retailer 3
-
$14,423 NZD
View
A
Retailer 4
-
$14,644 NZD
View
A
Retailer 5
-
$15,672 NZD
View
A
Retailer 6
-
$15,688 NZD
View
Retailer 7
-
$15,839 NZD
View
Price last confirmed 8 days ago
A
Retailer 8
-
$16,231 NZD
View
A
Retailer 9
-
$16,960 NZD
View
A
Retailer 10
-
$17,254 NZD
View
A
Retailer 11
-
$17,446 NZD
View
A
Retailer 12
-
$17,561 NZD
View
A
Retailer 13
-
$19,475 NZD
View
A
Retailer 14
-
$19,570 NZD
View
B+
Retailer 15
-
$23,617 NZD
View
Most Expensive
B+
NZ Jewellers
41722f61-8fac-4ef7-af22-2433a7809c5f · Nov 5
$28,366 NZD
$15,946 USD
View
15 more retailers have this diamond
Prices start from $12,372 NZDSave up to $15,994 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
2.55ct Round
$12,372 NZD