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2.55ct H SI1 Round Natural Diamond

EX • H/SI1 • IGI 782657428

Shape and cutting style on the report: Round brilliant

Certificate IGI 782657428

Diamond specifications and retailer prices

From $17,337 AUD
₹1,159,858 INR
As of November 1, 2026
Save $13,610 AUD (44%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $30,947 AUD at MOH London · As of November 1, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 782657428. Listed at 12 retailers as of November 1, 2026, with prices from $17,337 to $30,947, a $13,610 spread on the same certified stone. MOH London lists it at $30,947. 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
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 782657428
Dimensions8.71 × 8.77 × 5.47 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
8.71 mm8.77 mm2.55 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 782657428
Side View
Table 56.0%Crown 36.5°Girdle: MediumPavilion 40.8°Culet: NoneDepth 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 1
Current: $30,947 AUD|Low: $17,297 AUD|High: $31,319 AUD|Avg: $23,714 AUD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 3$17,337 AUD
Retailer 7$20,960 AUD
Retailer 6$21,439 AUD
Retailer 4$22,170 AUD
Retailer 8$23,330 AUD
Retailer 2$23,870 AUD
Retailer 5$27,399 AUD
MOH London$30,947 AUD

38 data points across 8 retailers

12 retailers$17,337 AUD to $30,947 AUD

A
Cheapest Retailer
-
$17,337 AUD
₹1,159,858 INR
A
Retailer 2
-
$20,960 AUD
$14,723 USD
View
Final sale: no returns
A
Retailer 3
-
$21,439 AUD
$15,060 USD
View
A
Retailer 4
-
$22,170 AUD
£12,263 GBP
View
A
Retailer 5
-
$23,330 AUD
$16,388 USD
View
A
Retailer 6
-
$23,694 AUD
$16,644 USD
View
A
Retailer 7
-
$23,870 AUD
€15,969 EUR
View
A
Retailer 8
-
$24,296 AUD
$17,066 USD
View
A
Retailer 9
-
$24,607 AUD
$17,285 USD
View
B+
Retailer 10
-
$27,399 AUD
ZAR 310,927 ZAR
View
B+
Retailer 11
-
$28,072 AUD
$19,719 USD
View
Most Expensive
B+
MOH London
9DF1C1694 · Nov 1
$30,947 AUD
£17,117 GBP
View
11 more retailers have this diamond
Prices start from $17,337 AUDSave up to $13,610 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
$17,337 AUD