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0.55ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 1553112517

Certificate GIA 1553112517

Diamond specifications and retailer prices

From £394 GBP
As of November 5, 2026
Save £346 GBP (47%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £739 GBP at Frank Darling · As of November 6, 2026
View at Frank Darling

About this 0.55ct natural round diamond

This 0.55ct natural round sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1553112517. Listed at 11 retailers as of November 5, 2026, with prices from £394 to £739, a £346 spread on the same certified stone. Frank Darling lists it at £739. 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
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 1553112517
Dimensions5.24 × 3.25 × 3.25 mm
L/W Ratio1.61
Culet sizeNone
Top View
5.24 mm3.25 mm0.55 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1553112517
Side View
Table 58.0%Crown 34°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 61.8%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: £739 GBP|Low: £394 GBP|High: £765 GBP|Avg: £558 GBP|-3.3%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 9£394 GBP
Retailer 10£423 GBP
Retailer 4£432 GBP
Retailer 3£490 GBP
Retailer 8£550 GBP
Retailer 5£591 GBP
Retailer 6£599 GBP
Retailer 2£621 GBP
Retailer 7£631 GBP
Frank Darling£739 GBP

34 data points across 10 retailers

11 retailers£394 GBP to £739 GBP

A
Cheapest Retailer
-
£394 GBP
A
Retailer 2
-
£423 GBP
View
A
Retailer 3
-
£432 GBP
View
A
Retailer 4
-
£490 GBP
View
B+
Retailer 5
-
£525 GBP
View
B+
Retailer 6
-
£550 GBP
View
B+
Retailer 7
-
£591 GBP
View
B+
Retailer 8
-
£599 GBP
View
B+
Retailer 9
-
£621 GBP
View
B+
Retailer 10
-
£631 GBP
View
Most Expensive
B+
Frank Darling
2627231HK · Nov 6
£739 GBP
$995 USD
View
10 more retailers have this diamond
Prices start from £394 GBPSave up to £346 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
£394 GBP