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Round|Natural|GIA

0.55ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6565385552

Certificate GIA 6565385552

Diamond specifications and retailer prices

From £367 GBP
₹46,816 INR
As of November 1, 2026
Save £1,278 GBP (78%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £1,645 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 6565385552. Listed at 24 retailers as of October 30, 2026, with prices from £367 to £1,645, a £1,278 spread on the same certified stone. NZ Jewellers lists it at £1,645. 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 angle33°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 6565385552
Dimensions5.26 × 5.30 × 3.25 mm
L/W Ratio1.01
Key to symbols
Feather
Top View
5.26 mm5.30 mm0.55 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6565385552
Side View
Table 57.0%Crown 33°Girdle: NUL-NULPavilion 41.4°Culet: NoneDepth 61.5%

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 1
Current: £1,645 GBP|Low: £367 GBP|High: £1,659 GBP|Avg: £648 GBP|-0.9%
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
Retailer 19
Retailer 20
Retailer 21
November 2, 2026
Retailer 20£367 GBP
Retailer 8£405 GBP
Retailer 21£430 GBP
Retailer 9£469 GBP
Retailer 17£473 GBP
Retailer 16£510 GBP
Retailer 2£514 GBP
Retailer 5£515 GBP
Retailer 12£525 GBP
Retailer 7£600 GBP
Retailer 18£607 GBP
Retailer 4£607 GBP
Retailer 14£610 GBP
Retailer 15£624 GBP
Retailer 13£657 GBP
Retailer 11£661 GBP
Retailer 19£661 GBP
Retailer 3£698 GBP
Retailer 10£810 GBP
Retailer 6£1,173 GBP
NZ Jewellers£1,645 GBP

17 data points across 21 retailers

24 retailers£367 GBP to £1,645 GBP

A
Cheapest Retailer
-
£367 GBP
₹46,816 INR
A
Retailer 2
-
£405 GBP
₹51,744 INR
View
A
Retailer 3
-
£430 GBP
HK$4,500 HKD
View
A
Retailer 4
-
£469 GBP
$628 USD
View
Final sale: no returns
A
Retailer 5
-
£473 GBP
A$975 AUD
View
Retailer 6
-
£484 GBP
$648 USD
View
Price last confirmed 20 days ago
A
Retailer 7
-
£510 GBP
$684 USD
View
A
Retailer 8
-
£514 GBP
$689 USD
View
A
Retailer 9
-
£515 GBP
$690 USD
View
A
Retailer 10
-
£525 GBP
$703 USD
View
Retailer 11
-
£561 GBP
$752 USD
View
Price last confirmed 28 days ago
B+
Retailer 12
-
£600 GBP
$804 USD
View
B+
Retailer 13
-
£607 GBP
View
B+
Retailer 14
-
£607 GBP
$813 USD
View
B+
Retailer 15
-
£610 GBP
$818 USD
View
B+
Retailer 16
-
£624 GBP
View
B+
Retailer 17
-
£657 GBP
View
B+
Retailer 18
-
£661 GBP
$885 USD
View
B+
Retailer 19
-
£661 GBP
€844 EUR
View
B+
Retailer 20
-
£698 GBP
$935 USD
View
B+
Retailer 21
-
£810 GBP
ZAR 17,529 ZAR
View
Retailer 22
-
£829 GBP
A$1,710 AUD
View
Price last confirmed 29 days ago
B
Retailer 23
-
£1,173 GBP
View
Most Expensive
B
NZ Jewellers
5e2894fb-3241-4d2e-810e-c65ea367873d · Oct 30
£1,645 GBP
$2,204 USD
View
23 more retailers have this diamond
Prices start from £367 GBPSave up to £1,278 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
£367 GBP