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Round|Natural|GIA

0.55ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6521444924

Certificate GIA 6521444924

Diamond specifications and retailer prices

From £397 GBP
$532 USD
As of October 31, 2026
Save £952 GBP (71%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,349 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6521444924. Listed at 17 retailers as of October 30, 2026, with prices from £397 to £1,349, a £952 spread on the same certified stone. NZ Jewellers lists it at £1,349. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6521444924
Dimensions5.34 × 5.33 × 3.19 mm
L/W Ratio1.00
Top View
5.34 mm5.33 mm0.55 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6521444924
Side View
Table 62.0%Crown 34.5°Girdle: MED-THNPavilion 41°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: Oct 31
Current: £556 GBP|Low: £397 GBP|High: £1,005 GBP|Avg: £585 GBP|-1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 10£397 GBP
Retailer 9£437 GBP
Retailer 11£440 GBP
Retailer 3£463 GBP
Retailer 5£525 GBP
Retailer 1£556 GBP
Retailer 8£575 GBP
Retailer 4£635 GBP
Retailer 2£647 GBP
Retailer 6£664 GBP
Retailer 7£998 GBP

36 data points across 11 retailers

17 retailers£397 GBP to £1,349 GBP

A
Cheapest Retailer
-
£397 GBP
$532 USD
Final sale: no returns
Retailer 2
-
£430 GBP
$576 USD
View
Price last confirmed 48 days ago
Retailer 3
-
£437 GBP
$586 USD
View
Price last confirmed 11 days ago
A
Retailer 4
-
£440 GBP
$590 USD
View
A
Retailer 5
-
£463 GBP
$620 USD
View
A
Retailer 6
-
£463 GBP
$620 USD
View
A
Retailer 7
-
£496 GBP
$665 USD
View
A
Retailer 8
-
£525 GBP
View
A
Retailer 9
-
£528 GBP
$708 USD
View
B+
Retailer 10
-
£531 GBP
$712 USD
View
A
Retailer 11
-
£556 GBP
View
B+
Retailer 12
-
£575 GBP
$770 USD
View
B+
Retailer 13
-
£635 GBP
€810 EUR
View
Retailer 14
-
£647 GBP
A$1,333 AUD
View
Price last confirmed 29 days ago
B+
Retailer 15
-
£664 GBP
ZAR 14,365 ZAR
View
B
Retailer 16
-
£998 GBP
View
Most Expensive
B
NZ Jewellers
431c5930-d306-49c4-8845-2a1437e150fb · Oct 30
£1,349 GBP
$1,807 USD
View
16 more retailers have this diamond
Prices start from £397 GBPSave up to £952 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
£397 GBP