CaratHunter
Plans
Round|Natural|GIA

0.55ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 1557129599

Certificate GIA 1557129599

Diamond specifications and retailer prices

From £409 GBP
As of November 5, 2026
Save £346 GBP (46%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £754 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 1557129599. Listed at 11 retailers as of November 5, 2026, with prices from £409 to £754, a £346 spread on the same certified stone. Frank Darling lists it at £754. 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 angle32°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1557129599
Dimensions5.33 × 3.19 × 3.19 mm
L/W Ratio1.67
Culet sizeNone
Top View
5.33 mm3.19 mm0.55 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1557129599
Side View
Table 59.0%Crown 32°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 59.7%

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: £754 GBP|Low: £409 GBP|High: £763 GBP|Avg: £574 GBP|-1.1%
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£409 GBP
Retailer 10£439 GBP
Retailer 4£473 GBP
Retailer 3£508 GBP
Retailer 7£570 GBP
Retailer 5£611 GBP
Retailer 6£613 GBP
Retailer 2£643 GBP
Retailer 8£652 GBP
Frank Darling£754 GBP

41 data points across 10 retailers

11 retailers£409 GBP to £754 GBP

A
Cheapest Retailer
-
£409 GBP
A
Retailer 2
-
£439 GBP
View
A
Retailer 3
-
£473 GBP
View
A
Retailer 4
-
£508 GBP
View
B+
Retailer 5
-
£522 GBP
View
B+
Retailer 6
-
£570 GBP
View
B+
Retailer 7
-
£611 GBP
View
B+
Retailer 8
-
£613 GBP
View
B+
Retailer 9
-
£643 GBP
View
B+
Retailer 10
-
£652 GBP
View
Most Expensive
B+
Frank Darling
2628440HK · Nov 6
£754 GBP
$1,015 USD
View
10 more retailers have this diamond
Prices start from £409 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
£409 GBP