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Round|Natural|GIA

0.55ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 5556841738

Certificate GIA 5556841738

Diamond specifications and retailer prices

From £240 GBP
As of November 5, 2026
Save £166 GBP (41%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £959 GBP at NZ Jewellers · As of September 19, 2026
View at NZ Jewellers

About this 0.55ct natural round diamond

This 0.55ct 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 5556841738. Listed at 4 retailers as of November 5, 2026, with a 69% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.55
Carat
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 5556841738
Dimensions5.22 × 5.25 × 3.28 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Cloud
Top View
5.22 mm5.25 mm0.55 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5556841738
Side View
Table 56.0%Crown 36.5°Girdle: THN-MEDPavilion 40.8°Culet: NoneDepth 62.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 5
Current: £959 GBP|Low: £238 GBP|High: £959 GBP|Avg: £445 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 4£240 GBP
Retailer 5£269 GBP
Retailer 2£314 GBP
Retailer 3£406 GBP
NZ Jewellers£959 GBP

44 data points across 5 retailers

4 retailers£240 GBP to £406 GBP

A
Cheapest Retailer
-
£240 GBP
A
Retailer 2
-
£314 GBP
View
A
Retailer 3
-
£406 GBP
View
Most Expensive
NZ Jewellers
bb0ec976-bb15-4219-9afb-06e6d6432ec8 · Sep 19
£959 GBP
$1,291 USD
View
Price last confirmed 47 days ago
3 more retailers have this diamond
Prices start from £240 GBPSave up to £166 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
0.55ct Round
£240 GBP