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Round|Natural|GIA

3.50ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 5231717601

Certificate GIA 5231717601

Diamond specifications and retailer prices

From £16,665 GBP
As of November 1, 2026
Save £13,387 GBP (45%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £30,053 GBP at MOH London · As of November 4, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5231717601. Listed at 6 retailers as of November 1, 2026, with prices from £16,665 to £30,053, a £13,387 spread on the same certified stone. MOH London lists it at £30,053. 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
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 5231717601
Dimensions9.69 × 9.61 × 6.10 mm
L/W Ratio1.01
Top View
9.69 mm9.61 mm3.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5231717601
Side View
Table 56.0%Crown 36°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 63.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £30,053 GBP|Low: £16,665 GBP|High: £30,496 GBP|Avg: £20,744 GBP|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 4£16,665 GBP
Retailer 6£17,080 GBP
Retailer 5£17,358 GBP
Retailer 2£19,276 GBP
Retailer 3£23,228 GBP
MOH London£30,053 GBP

37 data points across 6 retailers

6 retailers£16,665 GBP to £30,053 GBP

A
Cheapest Retailer
-
£16,665 GBP
Retailer 2
-
£17,080 GBP
View
Price last confirmed 50 days ago
A
Retailer 3
-
£17,358 GBP
View
B+
Retailer 4
-
£19,276 GBP
View
B+
Retailer 5
-
£23,228 GBP
View
Most Expensive
B
MOH London
D7EE0F16A · Nov 4
£30,053 GBP
View
5 more retailers have this diamond
Prices start from £16,665 GBPSave up to £13,387 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
£16,665 GBP