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Round|Natural|GIA

5.15ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 1162220114

Certificate GIA 1162220114

Diamond specifications and retailer prices

From £40,636 GBP
As of November 4, 2026
Save £22,807 GBP (36%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £63,444 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 5.15ct natural round diamond

This 5.15ct natural round sits in the over five carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1162220114. Listed at 10 retailers as of November 2, 2026, with prices from £40,636 to £63,444, a £22,807 spread on the same certified stone. MOH London lists it at £63,444. 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

5.15
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle35°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1162220114
Dimensions11.13 × 11.15 × 6.82 mm
L/W Ratio1.00
Culet sizeNone
Top View
11.13 mm11.15 mm5.15 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1162220114
Side View
Table 57.0%Crown 35°Girdle: THN-MEDPavilion 40.8°Culet: NoneDepth 61.2%

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 4
Current: £63,444 GBP|Low: £38,929 GBP|High: £64,208 GBP|Avg: £46,019 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
Retailer 14
November 4, 2026
Retailer 4£38,929 GBP
Retailer 5£40,457 GBP
Retailer 9£40,636 GBP
Retailer 2£41,177 GBP
Retailer 11£41,738 GBP
Retailer 7£42,316 GBP
Retailer 10£43,391 GBP
Retailer 6£44,840 GBP
Retailer 13£46,708 GBP
Retailer 8£48,201 GBP
Retailer 3£48,577 GBP
Retailer 12£48,837 GBP
Retailer 14£50,445 GBP
MOH London£63,444 GBP

32 data points across 14 retailers

10 retailers£40,636 GBP to £63,444 GBP

Retailer 1
-
£38,929 GBP
Price last confirmed 32 days ago
A
Retailer 2
-
£40,636 GBP
View
A
Retailer 3
-
£41,177 GBP
View
A
Retailer 4
-
£42,316 GBP
View
B+
Retailer 5
-
£43,391 GBP
View
Retailer 6
-
£46,708 GBP
View
Price last confirmed 38 days ago
Retailer 7
-
£48,201 GBP
View
Price last confirmed 15 days ago
Retailer 8
-
£48,577 GBP
View
Price last confirmed 36 days ago
Retailer 9
-
£50,445 GBP
View
Price last confirmed 38 days ago
Most Expensive
B
MOH London
847235BFF · Nov 2
£63,444 GBP
View
9 more retailers have this diamond
Prices start from £40,636 GBPSave up to £22,807 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
5.15ct Round
£40,636 GBP