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Round|Natural|GIA

2.50ct M SI1 Round Natural Diamond

VG • M/SI1 • GIA 1558144106

Certificate GIA 1558144106

Diamond specifications and retailer prices

From $11,815 NZD
As of November 5, 2026
Save $6,897 NZD (37%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $27,553 NZD at NZ Jewellers · As of September 1, 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 M colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 1558144106. Listed at 11 retailers as of November 5, 2026, with a 58% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

2.50
Carat
M
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1558144106
Dimensions8.52 × 8.57 × 5.42 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Feather, Crystal, Needle
Top View
8.52 mm8.57 mm2.50 ctM / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558144106
Side View
Table 58.0%Crown 36°Girdle: STK-THKPavilion 41.2°Culet: NoneDepth 63.4%

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: $18,712 NZD|Low: $11,815 NZD|High: $18,842 NZD|Avg: $15,331 NZD|+1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 3$11,815 NZD
Retailer 4$14,085 NZD
Retailer 7$14,473 NZD
Retailer 5$14,952 NZD
Retailer 9$15,071 NZD
Retailer 8$15,601 NZD
Retailer 6$16,656 NZD
Retailer 2$16,818 NZD
Retailer 1$18,712 NZD

42 data points across 9 retailers

11 retailers$11,815 NZD to $18,712 NZD

A
Cheapest Retailer
-
$11,815 NZD
B+
Retailer 2
-
$14,085 NZD
View
B+
Retailer 3
-
$14,473 NZD
View
B+
Retailer 4
-
$14,952 NZD
View
Retailer 5
-
$15,601 NZD
View
Price last confirmed 37 days ago
Retailer 6
-
$16,327 NZD
View
Price last confirmed 60 days ago
B+
Retailer 7
-
$16,656 NZD
View
B+
Retailer 8
-
$16,818 NZD
View
B
Retailer 9
-
$18,712 NZD
View
Retailer 10
-
$18,839 NZD
View
Price last confirmed 60 days ago
Most Expensive
NZ Jewellers
21757c4f-5c25-43bb-888c-67616ce00f34 · Sep 1
$27,553 NZD
$15,489 USD
View
Price last confirmed 65 days ago
10 more retailers have this diamond
Prices start from $11,815 NZDSave up to $6,897 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
$11,815 NZD