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Round|Natural|GIA

2.50ct M SI2 Round Natural Diamond

EX • M/SI2 • GIA 2556633752

Certificate GIA 2556633752

Diamond specifications and retailer prices

From $14,315 AUD
As of November 4, 2026
Save $5,777 AUD (29%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $25,716 AUD at NZ Jewellers · As of September 18, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2556633752. Listed at 7 retailers as of November 4, 2026, with a 40% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

2.50
Carat
M
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle34°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 2556633752
Dimensions8.61 × 8.66 × 5.41 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Culet sizeNone
Key to symbols
Feather, Cloud, Crystal
Top View
8.61 mm8.66 mm2.50 ctM / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 2556633752
Side View
Table 60.0%Crown 34°GirdlePavilion 41.8°Culet: NoneDepth 62.7%

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: $21,555 AUD|Low: $14,252 AUD|High: $21,555 AUD|Avg: $17,600 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 4$14,315 AUD
Retailer 5$14,455 AUD
Retailer 8$15,429 AUD
Retailer 6$16,715 AUD
Retailer 3$18,498 AUD
Retailer 7$19,286 AUD
Retailer 2$20,092 AUD
NZ Jewellers$21,555 AUD

34 data points across 8 retailers

7 retailers$14,315 AUD to $20,092 AUD

B+
Cheapest Retailer
-
$14,315 AUD
B+
Retailer 2
-
$14,455 AUD
View
Retailer 3
-
$16,715 AUD
View
Price last confirmed 53 days ago
B
Retailer 4
-
$18,498 AUD
View
Retailer 5
-
$19,286 AUD
View
Price last confirmed 50 days ago
B
Retailer 6
-
$20,092 AUD
View
Most Expensive
NZ Jewellers
3b4012e0-17a8-4f6b-a44b-5e0a821e4491 · Sep 18
$25,716 AUD
$18,002 USD
View
Price last confirmed 49 days ago
6 more retailers have this diamond
Prices start from $14,315 AUDSave up to $5,777 AUD

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+
2.50ct Round
$14,315 AUD