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Round|Natural|GIA

2.50ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 1555796892

Certificate GIA 1555796892

Diamond specifications and retailer prices

From £11,496 GBP
HK$119,600 HKD
As of October 30, 2026
Save £9,268 GBP (45%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £20,764 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 1555796892. Listed at 15 retailers as of October 29, 2026, with prices from £11,496 to £20,764, a £9,268 spread on the same certified stone. MOH London lists it at £20,764. 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
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1555796892
Dimensions8.57 × 8.61 × 5.39 mm
L/W Ratio1.00
Girdle conditionFaceted
Top View
8.57 mm8.61 mm2.50 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555796892
Side View
Table 58.0%Crown 36°Girdle: Slightly ThickPavilion 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: Oct 30
Current: £20,764 GBP|Low: £11,496 GBP|High: £21,624 GBP|Avg: £14,797 GBP|-3.7%
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
Retailer 14
Retailer 15
October 30, 2026
Retailer 5£11,496 GBP
Retailer 15£12,275 GBP
Retailer 3£12,330 GBP
Retailer 7£12,673 GBP
Retailer 4£12,783 GBP
Retailer 12£12,807 GBP
Retailer 2£12,842 GBP
Retailer 6£13,074 GBP
Retailer 10£13,658 GBP
Retailer 11£14,472 GBP
Retailer 8£16,045 GBP
Retailer 9£16,314 GBP
Retailer 14£16,594 GBP
Retailer 13£18,734 GBP
MOH London£20,764 GBP

24 data points across 15 retailers

15 retailers£11,496 GBP to £20,764 GBP

A
Cheapest Retailer
-
£11,496 GBP
HK$119,600 HKD
A
Retailer 2
-
£12,275 GBP
$16,346 USD
View
A
Retailer 3
-
£12,330 GBP
$16,420 USD
View
A
Retailer 4
-
£12,673 GBP
$16,876 USD
View
Final sale: no returns
A
Retailer 5
-
£12,783 GBP
$17,024 USD
View
A
Retailer 6
-
£12,807 GBP
$17,054 USD
View
A
Retailer 7
-
£12,842 GBP
₹1,628,702 INR
View
A
Retailer 8
-
£13,074 GBP
$17,410 USD
View
A
Retailer 9
-
£13,658 GBP
View
B+
Retailer 10
-
£14,472 GBP
$19,272 USD
View
B+
Retailer 11
-
£16,045 GBP
€20,350 EUR
View
B+
Retailer 12
-
£16,314 GBP
View
B+
Retailer 13
-
£16,594 GBP
$22,098 USD
View
B
Retailer 14
-
£18,734 GBP
$24,948 USD
View
Most Expensive
B
MOH London
A38ADCC24 · Oct 29
£20,764 GBP
View
14 more retailers have this diamond
Prices start from £11,496 GBPSave up to £9,268 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
£11,496 GBP