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Round|Natural|GIA

0.55ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 2558429609

Certificate GIA 2558429609

Diamond specifications and retailer prices

From £429 GBP
HK$4,500 HKD
As of October 30, 2026
Save £1,151 GBP (73%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,581 GBP at NZ Jewellers · As of October 30, 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2558429609. Listed at 17 retailers as of October 30, 2026, with prices from £429 to £1,581, a £1,151 spread on the same certified stone. NZ Jewellers lists it at £1,581. 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
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2558429609
Dimensions5.22 × 5.24 × 3.29 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp
Top View
5.22 mm5.24 mm0.55 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2558429609
Side View
Table 55.0%Crown 36.5°Girdle: MED-MEDPavilion 40.6°Culet: NoneDepth 63.0%

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: Oct 30
Current: £1,581 GBP|Low: £382 GBP|High: £1,646 GBP|Avg: £697 GBP|-4.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
October 31, 2026
Retailer 6£382 GBP
Retailer 7£429 GBP
Retailer 18£465 GBP
Retailer 9£473 GBP
Retailer 16£486 GBP
Retailer 17£504 GBP
Retailer 4£523 GBP
Retailer 5£528 GBP
Retailer 13£581 GBP
Retailer 3£601 GBP
Retailer 2£625 GBP
Retailer 8£632 GBP
Retailer 11£654 GBP
Retailer 10£706 GBP
Retailer 15£709 GBP
Retailer 12£1,171 GBP
Retailer 14£1,462 GBP
NZ Jewellers£1,581 GBP

20 data points across 18 retailers

17 retailers£429 GBP to £1,581 GBP

Retailer 1
-
£382 GBP
₹48,793 INR
Price last confirmed 13 days ago
A
Retailer 2
-
£429 GBP
HK$4,500 HKD
View
Retailer 3
-
£473 GBP
$635 USD
View
Price last confirmed 15 days ago
Retailer 4
-
£486 GBP
€621 EUR
View
Price last confirmed 7 days ago
A
Retailer 5
-
£504 GBP
$676 USD
View
Retailer 6
-
£513 GBP
$689 USD
View
Price last confirmed 18 days ago
A
Retailer 7
-
£523 GBP
$702 USD
View
A
Retailer 8
-
£528 GBP
SGD 958 SGD
View
A
Retailer 9
-
£581 GBP
$780 USD
View
A
Retailer 10
-
£601 GBP
View
A
Retailer 11
-
£625 GBP
View
Retailer 12
-
£632 GBP
$848 USD
View
Price last confirmed 12 days ago
B+
Retailer 13
-
£654 GBP
View
Retailer 14
-
£709 GBP
$951 USD
View
Price last confirmed 7 days ago
B
Retailer 15
-
£1,171 GBP
View
B
Retailer 16
-
£1,462 GBP
CA$2,724 CAD
View
Most Expensive
B
NZ Jewellers
89fb8d2a-2d2e-46c3-a3c2-19dd40e56512 · Oct 30
£1,581 GBP
$2,121 USD
View
16 more retailers have this diamond
Prices start from £429 GBPSave up to £1,151 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
£429 GBP