CaratHunter
Plans
Round|Natural|GIA

3.25ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2556407892

Certificate GIA 2556407892

Diamond specifications and retailer prices

From £18,399 GBP
$24,652 USD
As of October 30, 2026
Save £10,419 GBP (36%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £28,817 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 3.25ct natural round diamond

This 3.25ct natural round sits in the three to five carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2556407892. Listed at 15 retailers as of October 29, 2026, with prices from £18,399 to £28,817, a £10,419 spread on the same certified stone. MOH London lists it at £28,817. 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

3.25
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2556407892
Dimensions9.38 × 9.42 × 5.91 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
9.38 mm9.42 mm3.25 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556407892
Side View
Table 58.0%Crown 35.5°GirdlePavilion 41.2°Culet: NoneDepth 62.9%

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: £28,817 GBP|Low: £18,399 GBP|High: £30,333 GBP|Avg: £22,294 GBP|-5.0%
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
October 30, 2026
Retailer 14£18,399 GBP
Retailer 3£18,445 GBP
Retailer 9£18,513 GBP
Retailer 11£19,289 GBP
Retailer 10£20,258 GBP
Retailer 12£21,272 GBP
Retailer 13£21,947 GBP
Retailer 2£22,269 GBP
Retailer 8£22,349 GBP
Retailer 7£22,542 GBP
Retailer 6£22,791 GBP
Retailer 4£23,666 GBP
Retailer 5£26,001 GBP
MOH London£28,817 GBP

20 data points across 14 retailers

15 retailers£18,399 GBP to £28,817 GBP

A
Cheapest Retailer
-
£18,399 GBP
$24,652 USD
A
Retailer 2
-
£18,445 GBP
$24,714 USD
View
A
Retailer 3
-
£18,513 GBP
View
A
Retailer 4
-
£19,289 GBP
$25,845 USD
View
Retailer 5
-
£20,179 GBP
A$41,597 AUD
View
Price last confirmed 27 days ago
A
Retailer 6
-
£20,258 GBP
$27,144 USD
View
A
Retailer 7
-
£21,272 GBP
$28,502 USD
View
A
Retailer 8
-
£21,947 GBP
$29,406 USD
View
A
Retailer 9
-
£22,269 GBP
€28,417 EUR
View
A
Retailer 10
-
£22,349 GBP
View
A
Retailer 11
-
£22,542 GBP
$30,203 USD
View
A
Retailer 12
-
£22,791 GBP
$30,537 USD
View
B+
Retailer 13
-
£23,666 GBP
ZAR 512,270 ZAR
View
B
Retailer 14
-
£26,001 GBP
$34,838 USD
View
Most Expensive
B
MOH London
962E5E0A7 · Oct 29
£28,817 GBP
View
14 more retailers have this diamond
Prices start from £18,399 GBPSave up to £10,419 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
3.25ct Round
£18,399 GBP