Round|Natural|GIA

0.55ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2567143851

Certificate GIA 2567143851

Diamond specifications and retailer prices

From £336 GBP
As of November 6, 2026
Save £637 GBP (65%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,722 GBP at NZ Jewellers · As of September 15, 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 2567143851. Listed at 15 retailers as of November 4, 2026, with a 190% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
FluorescenceNone
Crown angle36°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2567143851
Dimensions5.23 × 5.25 × 3.30 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Twinning Wisp, Cloud, Crystal, Feather
Top View
5.23 mm5.25 mm0.55 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2567143851
Side View
Table 57.0%Crown 36°Girdle: MediumPavilion 41.2°Culet: NoneDepth 62.9%

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 6
Current: £424 GBP|Low: £336 GBP|High: £1,000 GBP|Avg: £656 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 3£336 GBP
Retailer 2£384 GBP
Retailer 1£424 GBP
Retailer 10£516 GBP
Retailer 6£628 GBP
Retailer 9£665 GBP
Retailer 4£684 GBP
Retailer 5£707 GBP
Retailer 7£820 GBP
Retailer 8£973 GBP

27 data points across 10 retailers

15 retailers£336 GBP to £973 GBP

A
Cheapest Retailer
-
£336 GBP
A
Retailer 2
-
£384 GBP
View
Final sale: no returns
A
Retailer 3
-
£424 GBP
View
A
Retailer 4
-
£516 GBP
View
Retailer 5
-
£549 GBP
View
Price last confirmed 53 days ago
Retailer 6
-
£570 GBP
View
Price last confirmed 38 days ago
B+
Retailer 7
-
£628 GBP
View
Retailer 8
-
£634 GBP
View
Price last confirmed 53 days ago
B+
Retailer 9
-
£665 GBP
View
B+
Retailer 10
-
£684 GBP
View
B+
Retailer 11
-
£707 GBP
View
B+
Retailer 12
-
£820 GBP
View
Retailer 13
-
£825 GBP
View
Price last confirmed 33 days ago
B
Retailer 14
-
£973 GBP
View
Most Expensive
NZ Jewellers
c453bd50-51f0-465c-9d50-67a4b18e2b86 · Sep 15
£1,722 GBP
$2,318 USD
View
Price last confirmed 52 days ago
14 more retailers have this diamond
Prices start from £336 GBPSave up to £637 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
£336 GBP