Round|Natural|GIA

0.55ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 7558664761

Certificate GIA 7558664761

Diamond specifications and retailer prices

From £380 GBP
As of November 4, 2026
Save £1,185 GBP (76%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,704 GBP at NZ Jewellers · As of October 17, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7558664761. Listed at 19 retailers as of November 4, 2026, with a 312% 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 7558664761
Dimensions5.21 × 5.25 × 3.28 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Cloud, Crystal
Top View
5.21 mm5.25 mm0.55 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7558664761
Side View
Table 59.0%Crown 34.5°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 62.7%

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 4
Current: £699 GBP|Low: £380 GBP|High: £1,007 GBP|Avg: £714 GBP|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8£380 GBP
Retailer 7£628 GBP
Retailer 3£642 GBP
Retailer 5£652 GBP
Retailer 2£698 GBP
Retailer 1£699 GBP
Retailer 9£817 GBP
Retailer 4£839 GBP
Retailer 6£994 GBP

37 data points across 9 retailers

19 retailers£380 GBP to £1,565 GBP

A
Cheapest Retailer
-
£380 GBP
Final sale: no returns
A
Retailer 2
-
£483 GBP
View
Retailer 3
-
£493 GBP
View
Price last confirmed 21 days ago
Retailer 4
-
£493 GBP
View
Price last confirmed 66 days ago
A
Retailer 5
-
£504 GBP
View
A
Retailer 6
-
£511 GBP
View
Retailer 7
-
£568 GBP
View
Price last confirmed 45 days ago
B+
Retailer 8
-
£573 GBP
View
B+
Retailer 9
-
£604 GBP
View
B+
Retailer 10
-
£628 GBP
View
B+
Retailer 11
-
£642 GBP
View
B+
Retailer 12
-
£691 GBP
View
B+
Retailer 13
-
£698 GBP
View
B+
Retailer 14
-
£699 GBP
View
Retailer 15
-
£817 GBP
View
Price last confirmed 33 days ago
B
Retailer 16
-
£839 GBP
View
B
Retailer 17
-
£994 GBP
View
B
Retailer 18
-
£1,565 GBP
View
Most Expensive
NZ Jewellers
33d5d57e-58f1-43b5-a39e-e162d4dc664d · Oct 17
£1,704 GBP
$2,294 USD
View
Price last confirmed 20 days ago
18 more retailers have this diamond
Prices start from £380 GBPSave up to £1,185 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
£380 GBP