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Round|Natural|GIA

2.50ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 6561273899

Certificate GIA 6561273899

Diamond specifications and retailer prices

From $16,370 USD
As of October 25, 2026
Save $9,593 USD (37%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $25,963 USD at MOH London · As of October 29, 2026
View at MOH London

About this 2.5ct natural round diamond

This 2.5ct 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 6561273899. Listed at 15 retailers as of October 25, 2026, with prices from $16,370 to $25,963, a $9,593 spread on the same certified stone. MOH London lists it at $25,963. 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
I
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6561273899
Dimensions8.59 × 8.63 × 5.44 mm
L/W Ratio1.00
Key to symbols
Crystal, Feather, Cloud, Needle, Natural
Top View
8.59 mm8.63 mm2.50 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6561273899
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 63.2%

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: Oct 25
Current: $25,963 USD|Low: $16,370 USD|High: $26,135 USD|Avg: $19,843 USD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 29, 2026
Retailer 8$16,370 USD
Retailer 5$16,533 USD
Retailer 2$17,070 USD
Retailer 11$17,492 USD
Retailer 10$18,252 USD
Retailer 9$19,165 USD
Retailer 7$19,202 USD
Retailer 12$19,773 USD
Retailer 6$20,455 USD
Retailer 3$20,534 USD
Retailer 4$21,368 USD
Retailer 13$23,425 USD
MOH London$25,963 USD

35 data points across 13 retailers

15 retailers$16,370 USD to $25,963 USD

A
Cheapest Retailer
-
$16,370 USD
A
Retailer 2
-
$16,533 USD
View
A
Retailer 3
-
$16,779 USD
View
A
Retailer 4
-
$17,070 USD
£13,441 GBP
View
A
Retailer 5
-
$17,492 USD
View
Final sale: no returns
B+
Retailer 6
-
$18,252 USD
View
B+
Retailer 7
-
$19,165 USD
View
B+
Retailer 8
-
$19,202 USD
€18,288 EUR
View
B+
Retailer 9
-
$19,773 USD
View
B+
Retailer 10
-
$20,287 USD
View
B+
Retailer 11
-
$20,455 USD
£16,107 GBP
View
B+
Retailer 12
-
$20,534 USD
View
B+
Retailer 13
-
$21,368 USD
View
B
Retailer 14
-
$23,425 USD
View
Most Expensive
B
MOH London
F455A4935 · Oct 29
$25,963 USD
£20,443 GBP
View
14 more retailers have this diamond
Prices start from $16,370 USDSave up to $9,593 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
2.50ct Round
$16,370 USD