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3.50ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 6235750387

Shape and cutting style on the report: Round brilliant

Certificate GIA 6235750387

Diamond specifications and retailer prices

From £21,886 GBP
$29,325 USD
As of October 30, 2026
Save £22,872 GBP (51%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £44,758 GBP at The Diamond Guys · As of October 30, 2026
View at The Diamond Guys

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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6235750387. Listed at 9 retailers as of October 30, 2026, with prices from £21,886 to £44,758, a £22,872 spread on the same certified stone. The Diamond Guys lists it at £44,758. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6235750387
Dimensions9.60 × 9.65 × 6.06 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
9.60 mm9.65 mm3.50 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6235750387
Side View
Table 56.0%Crown 35.5°Girdle: THN-STKPavilion 40.8°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: £22,816 GBP|Low: £21,886 GBP|High: £44,758 GBP|Avg: £36,546 GBP|-45.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
The Diamond Guys
October 30, 2026
Retailer 2£21,886 GBP
Retailer 1£22,816 GBP
Retailer 4£36,608 GBP
Retailer 3£37,060 GBP
Retailer 6£38,651 GBP
Retailer 5£38,793 GBP
Retailer 7£40,409 GBP
Retailer 8£42,025 GBP
The Diamond Guys£44,758 GBP

25 data points across 9 retailers

9 retailers£21,886 GBP to £44,758 GBP

A
Cheapest Retailer
-
£21,886 GBP
$29,325 USD
A
Retailer 2
-
£22,816 GBP
$30,571 USD
View
B
Retailer 3
-
£36,608 GBP
€46,715 EUR
View
B
Retailer 4
-
£37,060 GBP
CA$68,967 CAD
View
B
Retailer 5
-
£38,651 GBP
$51,788 USD
View
B
Retailer 6
-
£38,793 GBP
$51,978 USD
View
B
Retailer 7
-
£40,409 GBP
$54,144 USD
View
B
Retailer 8
-
£42,025 GBP
$56,309 USD
View
Most Expensive
B
The Diamond Guys
1997306236 · Oct 30
£44,758 GBP
$59,971 USD
View
8 more retailers have this diamond
Prices start from £21,886 GBPSave up to £22,872 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
£21,886 GBP