Round|Natural|GIA

0.55ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 1255439370

Certificate GIA 1255439370

Diamond specifications and retailer prices

From €530 EUR
As of November 4, 2026
Save €828 EUR (61%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €1,846 EUR at NZ Jewellers · As of November 4, 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 1255439370. Listed at 10 retailers as of November 4, 2026, with a 156% 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
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1255439370
Dimensions5.26 × 5.23 × 3.26 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
5.26 mm5.23 mm0.55 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1255439370
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: €1,846 EUR|Low: €530 EUR|High: €1,846 EUR|Avg: €826 EUR
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 3€530 EUR
Retailer 8€534 EUR
Retailer 6€555 EUR
Retailer 7€575 EUR
Retailer 10€575 EUR
Retailer 9€616 EUR
Retailer 2€715 EUR
Retailer 5€801 EUR
Retailer 4€1,358 EUR
NZ Jewellers€1,846 EUR

41 data points across 10 retailers

10 retailers€530 EUR to €1,358 EUR

A
Cheapest Retailer
-
€530 EUR
B+
Retailer 2
-
€534 EUR
View
B+
Retailer 3
-
€555 EUR
View
Retailer 4
-
€575 EUR
View
Price last confirmed 8 days ago
B+
Retailer 5
-
€575 EUR
View
B+
Retailer 6
-
€616 EUR
View
B
Retailer 7
-
€715 EUR
View
B
Retailer 8
-
€801 EUR
View
B
Retailer 9
-
€1,358 EUR
View
Most Expensive
NZ Jewellers
a4a68796-f60c-4280-b19c-15829ead3b87 · Nov 4
€1,846 EUR
$2,072 USD
View
Price under review
9 more retailers have this diamond
Prices start from €530 EURSave up to €828 EUR

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
€530 EUR