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Round|Natural|GIA

3.50ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2556837743

Certificate GIA 2556837743

Diamond specifications and retailer prices

From £29,674 GBP
CA$55,223 CAD
As of October 30, 2026
Save £19,354 GBP (39%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £49,029 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 3.5ct natural round diamond

This 3.5ct 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 2556837743. Listed at 15 retailers as of October 30, 2026, with prices from £29,674 to £49,029, a £19,354 spread on the same certified stone. MOH London lists it at £49,029. 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

3.50
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2556837743
Dimensions9.56 × 9.63 × 6.10 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
9.56 mm9.63 mm3.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556837743
Side View
Table 57.0%CrownGirdle: MED-STKPavilion 41.2°Culet: NoneDepth 63.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £49,029 GBP|Low: £24,456 GBP|High: £49,619 GBP|Avg: £32,499 GBP|-0.1%
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
Retailer 16
Retailer 17
November 1, 2026
Retailer 9£24,456 GBP
Retailer 7£25,687 GBP
Retailer 8£26,961 GBP
Retailer 6£29,546 GBP
Retailer 12£29,674 GBP
Retailer 16£30,120 GBP
Retailer 5£30,978 GBP
Retailer 11£31,231 GBP
Retailer 10£31,712 GBP
Retailer 3£32,995 GBP
Retailer 17£32,995 GBP
Retailer 13£33,279 GBP
Retailer 4£34,092 GBP
Retailer 14£35,839 GBP
Retailer 15£36,607 GBP
Retailer 2£37,107 GBP
MOH London£49,029 GBP

33 data points across 17 retailers

15 retailers£29,674 GBP to £49,029 GBP

Retailer 1
-
£24,456 GBP
HK$256,000 HKD
Price last confirmed 53 days ago
B+
Retailer 2
-
£29,674 GBP
CA$55,223 CAD
View
B+
Retailer 3
-
£30,120 GBP
$40,357 USD
View
B
Retailer 4
-
£30,978 GBP
A$63,858 AUD
View
B
Retailer 5
-
£31,231 GBP
$41,846 USD
View
B+
Retailer 6
-
£31,712 GBP
View
Retailer 7
-
£32,701 GBP
$43,816 USD
View
Price last confirmed 34 days ago
B
Retailer 8
-
£32,995 GBP
$44,210 USD
View
B
Retailer 9
-
£32,995 GBP
$44,210 USD
View
B
Retailer 10
-
£33,279 GBP
$44,590 USD
View
B
Retailer 11
-
£34,092 GBP
$45,680 USD
View
B
Retailer 12
-
£35,839 GBP
$48,020 USD
View
B
Retailer 13
-
£36,607 GBP
$49,049 USD
View
B
Retailer 14
-
£37,107 GBP
€47,352 EUR
View
Most Expensive
B
MOH London
3B939C1D8 · Nov 1
£49,029 GBP
View
14 more retailers have this diamond
Prices start from £29,674 GBPSave up to £19,354 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.

B+
3.50ct Round
£29,674 GBP