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Round|Natural|GIA

3.50ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6552698078

Certificate GIA 6552698078

Diamond specifications and retailer prices

From £25,495 GBP
$34,160 USD
As of October 31, 2026
Save £17,045 GBP (40%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £42,540 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 6552698078. Listed at 10 retailers as of October 31, 2026, with prices from £25,495 to £42,540, a £17,045 spread on the same certified stone. MOH London lists it at £42,540. 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
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6552698078
Dimensions9.60 × 9.66 × 6.05 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Key to symbols
Crystal, Cloud, Needle
Top View
9.60 mm9.66 mm3.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552698078
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.8%

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 31
Current: £42,540 GBP|Low: £25,495 GBP|High: £43,926 GBP|Avg: £31,873 GBP|-2.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 8£25,495 GBP
Retailer 6£27,184 GBP
Retailer 10£27,292 GBP
Retailer 9£28,373 GBP
Retailer 7£29,159 GBP
Retailer 4£31,319 GBP
Retailer 5£32,571 GBP
Retailer 2£33,069 GBP
Retailer 3£37,712 GBP
MOH London£42,540 GBP

34 data points across 10 retailers

10 retailers£25,495 GBP to £42,540 GBP

A
Cheapest Retailer
-
£25,495 GBP
$34,160 USD
B+
Retailer 2
-
£27,184 GBP
$36,424 USD
View
Retailer 3
-
£27,292 GBP
A$56,260 AUD
View
Price last confirmed 28 days ago
B+
Retailer 4
-
£28,373 GBP
$38,017 USD
View
B+
Retailer 5
-
£29,159 GBP
$39,070 USD
View
B
Retailer 6
-
£31,319 GBP
$41,964 USD
View
B
Retailer 7
-
£32,571 GBP
$43,642 USD
View
B
Retailer 8
-
£33,069 GBP
View
B
Retailer 9
-
£37,712 GBP
$50,530 USD
View
Most Expensive
B
MOH London
9BC1B674E · Nov 1
£42,540 GBP
View
9 more retailers have this diamond
Prices start from £25,495 GBPSave up to £17,045 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
3.50ct Round
£25,495 GBP