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Round|Natural|GIA

2.51ct M SI2 Round Natural Diamond

EX • M/SI2 • GIA 3555571199

Certificate GIA 3555571199

Diamond specifications and retailer prices

From $17,898 NZD
As of November 4, 2026
Save $14,253 NZD (44%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $32,150 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 2.51ct natural round diamond

This 2.51ct natural round sits in the two to three carat band, graded M colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 3555571199. Listed at 10 retailers as of November 4, 2026, with prices from $17,898 to $32,150, a $14,253 spread on the same certified stone. NZ Jewellers lists it at $32,150. 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

2.51
Carat
M
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 3555571199
Dimensions8.61 × 8.65 × 5.40 mm
L/W Ratio1.00
Culet sizeNone
Top View
8.61 mm8.65 mm2.51 ctM / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 3555571199
Side View
Table 58.0%Crown 36.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $32,150 NZD|Low: $15,227 NZD|High: $32,150 NZD|Avg: $20,945 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 3$15,227 NZD
Retailer 4$16,176 NZD
Retailer 12$17,898 NZD
Retailer 8$18,070 NZD
Retailer 9$19,290 NZD
Retailer 11$20,897 NZD
Retailer 6$21,219 NZD
Retailer 10$21,379 NZD
Retailer 5$23,127 NZD
Retailer 7$24,111 NZD
Retailer 2$25,118 NZD
NZ Jewellers$32,150 NZD

38 data points across 12 retailers

10 retailers$17,898 NZD to $32,150 NZD

B+
Cheapest Retailer
-
$17,898 NZD
B+
Retailer 2
-
$18,070 NZD
View
Retailer 3
-
$19,290 NZD
View
Price last confirmed 8 days ago
B
Retailer 4
-
$20,897 NZD
View
B
Retailer 5
-
$21,219 NZD
View
B
Retailer 6
-
$21,379 NZD
View
B
Retailer 7
-
$23,127 NZD
View
B
Retailer 8
-
$24,111 NZD
View
B
Retailer 9
-
$25,118 NZD
View
Most Expensive
C
NZ Jewellers
928eeac4-075c-4203-be19-aaab7d08d85b · Nov 5
$32,150 NZD
$18,073 USD
View
9 more retailers have this diamond
Prices start from $17,898 NZDSave up to $14,253 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.

B+
2.51ct Round
$17,898 NZD