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Round|Natural|GIA

2.55ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 2534799398

Certificate GIA 2534799398

Diamond specifications and retailer prices

From $15,314 AUD
As of November 1, 2026
Save $11,417 AUD (43%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $26,730 AUD at MOH London · As of November 4, 2026
View at MOH London

About this 2.55ct natural round diamond

This 2.55ct 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 2534799398. Listed at 16 retailers as of November 1, 2026, with prices from $15,314 to $26,730, a $11,417 spread on the same certified stone. MOH London lists it at $26,730. 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

2.55
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2534799398
Dimensions8.98 × 8.94 × 5.27 mm
L/W Ratio1.00
Top View
8.98 mm8.94 mm2.55 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2534799398
Side View
Table 59.0%CrownGirdle: THN-MEDPavilionCulet: NoneDepth 58.9%

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 1
Current: $26,730 AUD|Low: $15,314 AUD|High: $27,124 AUD|Avg: $20,430 AUD|-1.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 7$15,314 AUD
Retailer 5$15,785 AUD
Retailer 6$18,269 AUD
Retailer 2$19,446 AUD
Retailer 3$20,610 AUD
Retailer 4$23,565 AUD
MOH London$26,730 AUD

27 data points across 7 retailers

16 retailers$15,314 AUD to $26,730 AUD

A
Cheapest Retailer
-
$15,314 AUD
A
Retailer 2
-
$15,785 AUD
View
A
Retailer 3
-
$15,922 AUD
View
A
Retailer 4
-
$16,582 AUD
View
A
Retailer 5
-
$16,899 AUD
View
A
Retailer 6
-
$17,558 AUD
View
A
Retailer 7
-
$18,269 AUD
View
A
Retailer 8
-
$18,315 AUD
View
Retailer 9
-
$19,398 AUD
View
Price last confirmed 38 days ago
A
Retailer 10
-
$19,446 AUD
View
Retailer 11
-
$19,700 AUD
View
Price last confirmed 36 days ago
Retailer 12
-
$20,459 AUD
View
Price last confirmed 38 days ago
B+
Retailer 13
-
$20,610 AUD
View
B+
Retailer 14
-
$23,565 AUD
View
Retailer 15
-
$25,763 AUD
View
Price last confirmed 39 days ago
Most Expensive
B
MOH London
0B55DEA6F · Nov 4
$26,730 AUD
£14,734 GBP
View
15 more retailers have this diamond
Prices start from $15,314 AUDSave up to $11,417 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
2.55ct Round
$15,314 AUD