Round|Natural|GIA

0.55ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2284433391

Certificate GIA 2284433391

Diamond specifications and retailer prices

From £393 GBP
As of November 4, 2026
Save £588 GBP (60%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,334 GBP at NZ Jewellers · As of September 19, 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 2284433391. Listed at 16 retailers as of November 4, 2026, with a 150% 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
FluorescenceFaint
Crown angle34°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2284433391
Dimensions5.28 × 5.25 × 3.26 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
5.28 mm5.25 mm0.55 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2284433391
Side View
Table 55.0%Crown 34°Girdle: ThickPavilion 40.8°Culet: NoneDepth 61.8%

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: £513 GBP|Low: £393 GBP|High: £994 GBP|Avg: £568 GBP|+4.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 11£393 GBP
Retailer 8£426 GBP
Retailer 2£458 GBP
Retailer 3£458 GBP
Retailer 4£475 GBP
Retailer 1£513 GBP
Retailer 5£526 GBP
Retailer 6£569 GBP
Retailer 10£572 GBP
Retailer 12£640 GBP
Retailer 7£656 GBP
Retailer 9£981 GBP

45 data points across 12 retailers

16 retailers£393 GBP to £981 GBP

A
Cheapest Retailer
-
£393 GBP
Final sale: no returns
A
Retailer 2
-
£403 GBP
View
A
Retailer 3
-
£426 GBP
View
A
Retailer 4
-
£458 GBP
View
Retailer 5
-
£458 GBP
View
Price last confirmed 8 days ago
Retailer 6
-
£491 GBP
View
Price last confirmed 45 days ago
A
Retailer 7
-
£513 GBP
View
A
Retailer 8
-
£524 GBP
View
B+
Retailer 9
-
£526 GBP
View
B+
Retailer 10
-
£569 GBP
View
B+
Retailer 11
-
£572 GBP
View
B+
Retailer 12
-
£591 GBP
View
Retailer 13
-
£640 GBP
View
Price last confirmed 33 days ago
B+
Retailer 14
-
£656 GBP
View
B
Retailer 15
-
£981 GBP
View
Most Expensive
NZ Jewellers
38c786df-3a29-455a-9df8-6aec4e2f05fd · Sep 19
£1,334 GBP
$1,786 USD
View
Price last confirmed 48 days ago
15 more retailers have this diamond
Prices start from £393 GBPSave up to £588 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
£393 GBP