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0.65ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 6512817691

Certificate GIA 6512817691

Diamond specifications and retailer prices

From £264 GBP
As of November 4, 2026
Save £260 GBP (50%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £524 GBP at Yorxs · As of November 5, 2026
View at Yorxs

About this 0.65ct natural round diamond

This 0.65ct natural round sits in the half to three-quarter carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6512817691. Listed at 5 retailers as of November 4, 2026, with prices from £264 to £524, a £260 spread on the same certified stone. Yorxs lists it at £524. 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

0.65
Carat
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle32.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6512817691
Dimensions5.66 × 5.64 × 3.37 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Top View
5.66 mm5.64 mm0.65 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6512817691
Side View
Table 61.0%Crown 32.5°Girdle: ThickPavilion 41.6°Culet: NoneDepth 59.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £521 GBP|Low: £264 GBP|High: £531 GBP|Avg: £415 GBP|+0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Yorxs
November 6, 2026
Retailer 3£264 GBP
Retailer 2£377 GBP
Retailer 4£383 GBP
Retailer 1£521 GBP
Yorxs£524 GBP

37 data points across 5 retailers

5 retailers£264 GBP to £524 GBP

A
Cheapest Retailer
-
£264 GBP
B+
Retailer 2
-
£377 GBP
View
B+
Retailer 3
-
£383 GBP
View
B+
Retailer 4
-
£521 GBP
View
Most Expensive
B+
Yorxs
91578 · Nov 5
£524 GBP
€672 EUR
View
4 more retailers have this diamond
Prices start from £264 GBPSave up to £260 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
0.65ct Round
£264 GBP