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Round|Natural|GIA

2.55ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 16

Certificate GIA 16

Diamond specifications and retailer prices

From $20,425 NZD
As of November 4, 2026
Save $15,192 NZD (43%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $35,617 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 GIA. Listed at 11 retailers as of November 4, 2026, with prices from $20,425 to $35,617, a $15,192 spread on the same certified stone. NZ Jewellers lists it at $35,617. 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
OriginNatural
Grading LabGIA
CertificateGIA 16
Dimensions8.94 × 8.98 × 5.27 mm
L/W Ratio1.00
Top View
8.94 mm8.98 mm2.55 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 16
Side View
Table 59.0%CrownGirdle: THN-MEDPavilionCulet: NoneDepth 58.9%

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: $35,617 NZD|Low: $20,425 NZD|High: $35,617 NZD|Avg: $24,802 NZD|+11.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 3$20,425 NZD
Retailer 5$21,370 NZD
Retailer 4$22,795 NZD
Retailer 6$23,152 NZD
Retailer 7$23,567 NZD
Retailer 2$26,452 NZD
NZ Jewellers$35,617 NZD

11 data points across 7 retailers

11 retailers$20,425 NZD to $35,617 NZD

A
Cheapest Retailer
-
$20,425 NZD
Retailer 2
-
$21,370 NZD
View
Price last confirmed 8 days ago
Retailer 3
-
$21,370 NZD
View
Price last confirmed 29 days ago
A
Retailer 4
-
$22,795 NZD
View
A
Retailer 5
-
$23,152 NZD
View
Retailer 6
-
$23,152 NZD
View
Price last confirmed 30 days ago
A
Retailer 7
-
$23,567 NZD
View
Retailer 8
-
$24,042 NZD
View
Price last confirmed 30 days ago
B+
Retailer 9
-
$26,452 NZD
View
Retailer 10
-
$32,082 NZD
View
Price last confirmed 31 days ago
Most Expensive
B
NZ Jewellers
7476029c-3922-4cf1-8c9b-6bb374f9ba40 · Nov 5
$35,617 NZD
$20,022 USD
View
10 more retailers have this diamond
Prices start from $20,425 NZDSave up to $15,192 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
$20,425 NZD