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Round|Natural|GIA

3.70ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 6541284158

Certificate GIA 6541284158

Diamond specifications and retailer prices

From £20,123 GBP
As of November 4, 2026
Save £11,248 GBP (36%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £31,371 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 3.7ct natural round diamond

This 3.7ct natural round sits in the three to five carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6541284158. Listed at 8 retailers as of November 2, 2026, with prices from £20,123 to £31,371, a £11,248 spread on the same certified stone. MOH London lists it at £31,371. 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

3.70
Carat
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6541284158
Dimensions9.82 × 9.87 × 6.17 mm
L/W Ratio1.01
Top View
9.82 mm9.87 mm3.70 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6541284158
Side View
Table 59.0%Crown 34.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.7%

Caratlytics Score

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

Price History

Last verified: Nov 4
Current: £31,371 GBP|Low: £17,962 GBP|High: £31,371 GBP|Avg: £22,865 GBP
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
November 6, 2026
Retailer 12£17,962 GBP
Retailer 13£19,038 GBP
Retailer 10£20,123 GBP
Retailer 2£20,885 GBP
Retailer 7£20,924 GBP
Retailer 3£21,255 GBP
Retailer 5£22,494 GBP
Retailer 9£23,110 GBP
Retailer 8£23,281 GBP
Retailer 6£24,020 GBP
Retailer 11£25,238 GBP
Retailer 4£29,694 GBP
MOH London£31,371 GBP

27 data points across 13 retailers

8 retailers£20,123 GBP to £31,371 GBP

Retailer 1
-
£17,962 GBP
Price last confirmed 16 days ago
B+
Retailer 2
-
£20,123 GBP
View
B+
Retailer 3
-
£20,885 GBP
View
B+
Retailer 4
-
£20,924 GBP
View
B+
Retailer 5
-
£23,110 GBP
View
B+
Retailer 6
-
£23,281 GBP
View
B+
Retailer 7
-
£24,020 GBP
View
Most Expensive
B
MOH London
2EEF4327A · Nov 2
£31,371 GBP
View
7 more retailers have this diamond
Prices start from £20,123 GBPSave up to £11,248 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+
3.70ct Round
£20,123 GBP