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5.53ct L SI1 Round Natural Diamond

EX • L/SI1 • IGI 780669328

Shape and cutting style on the report: Round brilliant

Certificate IGI 780669328

Diamond specifications and retailer prices

From £20,432 GBP
As of October 31, 2026
Save £362 GBP (2%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £20,794 GBP at Yorxs · As of November 5, 2026
View at Yorxs

About this 5.53ct natural round diamond

This 5.53ct natural round sits in the over five carat band, graded L colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 780669328. Listed at 2 retailers as of October 31, 2026, with a relatively tight 2% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

5.53
Carat
L
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle41.2°
OriginNatural
Grading LabIGI
CertificateIGI 780669328
Dimensions11.27 × 11.21 × 7.07 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
11.27 mm11.21 mm5.53 ctL / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 780669328
Side View
Table 57.0%Crown 36.1°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: £20,432 GBP|Low: £20,432 GBP|High: £26,934 GBP|Avg: £23,825 GBP|-23.5%
Retailer 1
Yorxs
November 5, 2026
Retailer 1£20,432 GBP
Yorxs£20,794 GBP

22 data points across 2 retailers

2 retailers£20,432 GBP to £20,794 GBP

A
Cheapest Retailer
-
£20,432 GBP
Most Expensive
B+
Yorxs
611685292 · Nov 5
£20,794 GBP
€26,654 EUR
View
1 more retailer has this diamond
Prices start from £20,432 GBPSave up to £362 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
5.53ct Round
£20,432 GBP