Round|Natural|GIA

2.55ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 6565434854

Certificate GIA 6565434854

Diamond specifications and retailer prices

From $17,278 USD
As of October 24, 2026
Save $3,422 USD (17%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $26,669 USD at MOH London · As of October 21, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6565434854. Listed at 9 retailers as of October 24, 2026, with a relatively tight 20% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
I
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6565434854
Dimensions8.67 × 8.69 × 5.42 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal, Cloud
Top View
8.67 mm8.69 mm2.55 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6565434854
Side View
Table 57.0%Crown 35.5°Girdle: Sli. ThickPavilion 40.8°Culet: NoneDepth 62.5%

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: Oct 24
Current: $26,669 USD|Low: $17,278 USD|High: $26,669 USD|Avg: $19,881 USD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 8$17,278 USD
Retailer 5$17,886 USD
Retailer 9$19,275 USD
Retailer 2$20,030 USD
Retailer 3$20,030 USD
Retailer 7$20,185 USD
Retailer 6$20,539 USD
Retailer 4$20,700 USD
MOH London$26,669 USD

10 data points across 9 retailers

9 retailers$17,278 USD to $20,700 USD

A
Cheapest Retailer
-
$17,278 USD
A
Retailer 2
-
$17,886 USD
£14,084 GBP
View
Retailer 3
-
$19,275 USD
View
Price last confirmed 12 days ago
B+
Retailer 4
-
$20,030 USD
View
B+
Retailer 5
-
$20,030 USD
View
Retailer 6
-
$20,185 USD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
$20,539 USD
€19,561 EUR
View
B+
Retailer 8
-
$20,700 USD
View
Most Expensive
MOH London
097FFA9EF · Oct 21
$26,669 USD
£20,999 GBP
View
Price last confirmed 9 days ago
8 more retailers have this diamond
Prices start from $17,278 USDSave up to $3,422 USD

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
$17,278 USD