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Round|Natural|GIA

2.50ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 1568303599

Certificate GIA 1568303599

Diamond specifications and retailer prices

From $14,641 AUD
As of November 5, 2026
Save $13,239 AUD (47%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $27,880 AUD at With Clarity · As of November 4, 2026
View at With Clarity

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 1568303599. Listed at 11 retailers as of November 4, 2026, with prices from $14,641 to $27,880, a $13,239 spread on the same certified stone. With Clarity lists it at $27,880. 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 1568303599
Dimensions8.63 × 8.59 × 5.40 mm
L/W Ratio1.00
Culet sizeNone
Top View
8.63 mm8.59 mm2.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1568303599
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NDepth 62.7%

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: $19,705 AUD|Low: $14,559 AUD|High: $27,323 AUD|Avg: $18,781 AUD|+1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
With Clarity
November 5, 2026
Retailer 3$14,641 AUD
Retailer 2$15,559 AUD
Retailer 4$16,713 AUD
Retailer 8$16,808 AUD
Retailer 10$16,883 AUD
Retailer 6$17,196 AUD
Retailer 1$19,705 AUD
Retailer 9$19,716 AUD
Retailer 5$19,863 AUD
Retailer 7$20,542 AUD
With Clarity$27,323 AUD

26 data points across 11 retailers

11 retailers$14,641 AUD to $27,880 AUD

A
Cheapest Retailer
-
$14,641 AUD
A
Retailer 2
-
$15,559 AUD
View
A
Retailer 3
-
$16,713 AUD
View
A
Retailer 4
-
$16,808 AUD
View
A
Retailer 5
-
$16,883 AUD
View
A
Retailer 6
-
$17,196 AUD
View
B+
Retailer 7
-
$19,705 AUD
View
B+
Retailer 8
-
$19,716 AUD
View
B+
Retailer 9
-
$19,863 AUD
View
B+
Retailer 10
-
$20,542 AUD
View
Most Expensive
B
With Clarity
1568303599 · Nov 4
$27,880 AUD
$19,517 USD
View
10 more retailers have this diamond
Prices start from $14,641 AUDSave up to $13,239 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
$14,641 AUD