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5.21ct L SI2 Round Natural Diamond

EX • L/SI2 • IGI 506186497

Shape and cutting style on the report: Round brilliant

Certificate IGI 506186497

Diamond specifications and retailer prices

From £20,058 GBP
As of November 5, 2026
Save £7,296 GBP (27%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £27,354 GBP at Yorxs · As of November 2, 2026
View at Yorxs

About this 5.21ct natural round diamond

This 5.21ct natural round sits in the over five carat band, graded L colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 506186497. Listed at 3 retailers as of November 2, 2026, with prices from £20,058 to £27,354, a £7,296 spread on the same certified stone. Yorxs lists it at £27,354. 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

5.21
Carat
L
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle41.2°
OriginNatural
Grading LabIGI
CertificateIGI 506186497
Dimensions11.13 × 11.17 × 6.80 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
11.13 mm11.17 mm5.21 ctL / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 506186497
Side View
Table 59.0%Crown 33.2°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 5
Current: £20,058 GBP|Low: £20,058 GBP|High: £27,477 GBP|Avg: £23,526 GBP|-1.4%
Retailer 1
Retailer 2
Yorxs
November 5, 2026
Retailer 1£20,058 GBP
Retailer 2£23,567 GBP
Yorxs£27,354 GBP

44 data points across 3 retailers

3 retailers£20,058 GBP to £27,354 GBP

A
Cheapest Retailer
-
£20,058 GBP
B+
Retailer 2
-
£23,567 GBP
View
Most Expensive
B+
Yorxs
SJ-3656 · Nov 2
£27,354 GBP
€35,063 EUR
View
2 more retailers have this diamond
Prices start from £20,058 GBPSave up to £7,296 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
5.21ct Round
£20,058 GBP