Round|Natural|GIA

2.55ct I SI2 Round Natural Diamond

ID • I/SI2 • GIA 2556863528

Certificate GIA 2556863528

Diamond specifications and retailer prices

From $18,284 USD
£14,397 GBP
As of October 30, 2026
Save $813 USD (4%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $19,097 USD at Adiamor · As of October 30, 2026
View at Adiamor

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 2556863528. Listed at 2 retailers as of October 30, 2026, with a relatively tight 4% 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556863528
Dimensions8.84 × 8.80 × 5.34 mm
L/W Ratio1.00
Top View
8.84 mm8.80 mm2.55 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556863528
Side View
Table 58.0%CrownGirdlePavilionCulet: NoneDepth 60.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $19,097 USD|Low: $18,048 USD|High: $19,294 USD|Avg: $18,926 USD|-0.9%
Adiamor
Retailer 2
October 30, 2026
Retailer 2$18,284 USD
Adiamor$19,097 USD

21 data points across 2 retailers

2 retailers$18,284 USD to $19,097 USD

A
Cheapest Retailer
-
$18,284 USD
£14,397 GBP
Most Expensive
B+
Adiamor
D-82506608 · Oct 30
$19,097 USD
View
1 more retailer has this diamond
Prices start from $18,284 USDSave up to $813 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
$18,284 USD