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Round|Natural|GIA

2.50ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6541799178

Certificate GIA 6541799178

Diamond specifications and retailer prices

From $14,326 AUD
As of November 6, 2026
Save $7,865 AUD (35%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $22,192 AUD at NZ Jewellers · As of November 5, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6541799178. Listed at 11 retailers as of November 5, 2026, with prices from $14,326 to $22,192, a $7,865 spread on the same certified stone. NZ Jewellers lists it at $22,192. 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
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6541799178
Dimensions8.68 × 8.64 × 5.42 mm
L/W Ratio1.00
Star length55%
Top View
8.68 mm8.64 mm2.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6541799178
Side View
Table 56.0%Crown 36.5°GirdlePavilion 40.6°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $22,192 AUD|Low: $14,326 AUD|High: $22,192 AUD|Avg: $17,117 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 4$14,326 AUD
Retailer 9$14,698 AUD
Retailer 8$14,699 AUD
Retailer 2$15,236 AUD
Retailer 11$15,922 AUD
Retailer 3$16,168 AUD
Retailer 7$16,721 AUD
Retailer 5$18,283 AUD
Retailer 10$18,372 AUD
Retailer 6$20,739 AUD
NZ Jewellers$22,192 AUD

29 data points across 11 retailers

11 retailers$14,326 AUD to $22,192 AUD

A
Cheapest Retailer
-
$14,326 AUD
Retailer 2
-
$14,698 AUD
View
Price last confirmed 8 days ago
A
Retailer 3
-
$14,699 AUD
View
A
Retailer 4
-
$15,236 AUD
View
A
Retailer 5
-
$15,922 AUD
View
A
Retailer 6
-
$16,168 AUD
View
A
Retailer 7
-
$16,721 AUD
View
B+
Retailer 8
-
$18,283 AUD
View
B+
Retailer 9
-
$18,372 AUD
View
B+
Retailer 10
-
$20,739 AUD
View
Most Expensive
B+
NZ Jewellers
55130f87-974a-47b4-9126-a31325fafd30 · Nov 5
$22,192 AUD
$15,535 USD
View
10 more retailers have this diamond
Prices start from $14,326 AUDSave up to $7,865 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.

A
2.50ct Round
$14,326 AUD