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Round|Natural|GIA

3.18ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 6177561497

Certificate GIA 6177561497

Diamond specifications and retailer prices

From £22,741 GBP
As of November 6, 2026
Save £12,340 GBP (35%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £35,081 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 3.18ct natural round diamond

This 3.18ct 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 6177561497. Listed at 4 retailers as of November 4, 2026, with prices from £22,741 to £35,081, a £12,340 spread on the same certified stone. MOH London lists it at £35,081. 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

3.18
Carat
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
Crown angle34°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6177561497
Dimensions9.50 × 9.50 × 5.83 mm
L/W Ratio1.00
Star length55%
Lower girdle80%
Top View
9.50 mm9.50 mm3.18 ctK / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6177561497
Side View
Table 56.0%Crown 34°Girdle: THN-MEDPavilion 41°Culet: NoneDepth 61.4%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 6
Current: £35,081 GBP|Low: £22,741 GBP|High: £35,599 GBP|Avg: £27,305 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 2£22,741 GBP
Retailer 4£23,023 GBP
Retailer 3£27,115 GBP
MOH London£35,081 GBP

41 data points across 4 retailers

4 retailers£22,741 GBP to £35,081 GBP

B
Cheapest Retailer
-
£22,741 GBP
B
Retailer 2
-
£23,023 GBP
View
B
Retailer 3
-
£27,115 GBP
View
Most Expensive
B
MOH London
ED94F58D9 · Nov 4
£35,081 GBP
View
3 more retailers have this diamond
Prices start from £22,741 GBPSave up to £12,340 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
3.18ct Round
£22,741 GBP