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Round|Natural|GIA

2.50ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 6551701522

Certificate GIA 6551701522

Diamond specifications and retailer prices

From £12,577 GBP
$16,749 USD
As of October 28, 2026
Save £8,903 GBP (41%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £21,481 GBP 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 6551701522. Listed at 15 retailers as of October 28, 2026, with prices from £12,577 to £21,481, a £8,903 spread on the same certified stone. MOH London lists it at £21,481. 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
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551701522
Dimensions8.55 × 8.63 × 5.38 mm
L/W Ratio1.01
Culet sizeNone
Top View
8.55 mm8.63 mm2.50 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551701522
Side View
Table 58.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 62.6%

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 28
Current: £21,481 GBP|Low: £12,577 GBP|High: £21,624 GBP|Avg: £15,966 GBP|-0.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 30, 2026
Retailer 6£12,577 GBP
Retailer 2£13,557 GBP
Retailer 4£14,133 GBP
Retailer 5£15,965 GBP
Retailer 3£16,877 GBP
MOH London£21,481 GBP

33 data points across 6 retailers

15 retailers£12,577 GBP to £21,481 GBP

A
Cheapest Retailer
-
£12,577 GBP
$16,749 USD
A
Retailer 2
-
£12,920 GBP
$17,206 USD
View
A
Retailer 3
-
£13,557 GBP
₹1,719,439 INR
View
A
Retailer 4
-
£14,133 GBP
View
Retailer 5
-
£14,365 GBP
$19,130 USD
View
Price last confirmed 30 days ago
B+
Retailer 6
-
£14,616 GBP
$19,463 USD
View
Retailer 7
-
£14,821 GBP
$19,737 USD
View
Price last confirmed 29 days ago
B+
Retailer 8
-
£15,064 GBP
$20,060 USD
View
B+
Retailer 9
-
£15,064 GBP
$20,060 USD
View
Retailer 10
-
£15,391 GBP
$20,496 USD
View
Price last confirmed 30 days ago
B+
Retailer 11
-
£15,567 GBP
$20,730 USD
View
B+
Retailer 12
-
£15,965 GBP
€20,248 EUR
View
B+
Retailer 13
-
£16,877 GBP
View
Retailer 14
-
£19,382 GBP
$25,810 USD
View
Price last confirmed 32 days ago
Most Expensive
B
MOH London
32F9B49D0 · Oct 29
£21,481 GBP
View
14 more retailers have this diamond
Prices start from £12,577 GBPSave up to £8,903 GBP

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
£12,577 GBP