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Round|Natural|GIA

5.15ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 5232020565

Certificate GIA 5232020565

Diamond specifications and retailer prices

From £43,136 GBP
As of November 6, 2026
Save £9,771 GBP (18%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £52,906 GBP at 77 Diamonds · As of November 6, 2026
View at 77 Diamonds

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 5232020565. Listed at 5 retailers as of November 6, 2026, with prices from £43,136 to £52,906, a £9,771 spread on the same certified stone. 77 Diamonds lists it at £52,906. 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
FluorescenceNone
Crown angle35°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 5232020565
Dimensions10.99 × 10.92 × 6.76 mm
L/W Ratio1.01
Top View
10.99 mm10.92 mm5.15 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5232020565
Side View
Table 59.0%Crown 35°Girdle: Slightly ThickPavilion 40.6°Culet: NoneDepth 61.9%

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: Nov 6
Current: £52,906 GBP|Low: £42,902 GBP|High: £54,949 GBP|Avg: £46,059 GBP|-1.3%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 2£42,902 GBP
Retailer 3£43,136 GBP
Retailer 4£43,405 GBP
Retailer 5£45,094 GBP
77 Diamonds£52,906 GBP

38 data points across 5 retailers

5 retailers£43,136 GBP to £52,906 GBP

Retailer 1
-
£42,902 GBP
Price last confirmed 9 days ago
A
Retailer 2
-
£43,136 GBP
View
A
Retailer 3
-
£43,405 GBP
View
B+
Retailer 4
-
£45,094 GBP
View
Most Expensive
B+
77 Diamonds
RBZQAJVNJQX · Nov 6
£52,906 GBP
View
4 more retailers have this diamond
Prices start from £43,136 GBPSave up to £9,771 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
£43,136 GBP