Round|Natural|GIA

0.55ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 1559947635

Certificate GIA 1559947635

Diamond specifications and retailer prices

From £484 GBP
As of November 6, 2026
Save £720 GBP (60%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £2,120 GBP at NZ Jewellers · As of September 24, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1559947635. Listed at 22 retailers as of November 2, 2026, with a 149% 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
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 1559947635
Dimensions5.21 × 5.24 × 3.26 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal
Top View
5.21 mm5.24 mm0.55 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1559947635
Side View
Table 60.0%Crown 35°Girdle: MediumPavilion 41.4°Culet: NoneDepth 62.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £2,043 GBP|Low: £476 GBP|High: £2,043 GBP|Avg: £913 GBP
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
November 6, 2026
Retailer 15£484 GBP
Retailer 4£606 GBP
Retailer 11£625 GBP
Retailer 3£666 GBP
Retailer 9£669 GBP
Retailer 10£670 GBP
Retailer 8£744 GBP
Retailer 7£769 GBP
Retailer 16£778 GBP
Retailer 2£846 GBP
Retailer 5£871 GBP
Retailer 6£909 GBP
Retailer 12£922 GBP
Retailer 13£1,015 GBP
Retailer 14£1,204 GBP
NZ Jewellers£2,043 GBP

27 data points across 16 retailers

22 retailers£484 GBP to £1,204 GBP

A
Cheapest Retailer
-
£484 GBP
A
Retailer 2
-
£606 GBP
View
Final sale: no returns
Retailer 3
-
£624 GBP
View
Price last confirmed 38 days ago
A
Retailer 4
-
£625 GBP
View
A
Retailer 5
-
£666 GBP
View
A
Retailer 6
-
£669 GBP
View
A
Retailer 7
-
£670 GBP
View
Retailer 8
-
£676 GBP
View
Price last confirmed 36 days ago
Retailer 9
-
£702 GBP
View
Price last confirmed 38 days ago
Retailer 10
-
£744 GBP
View
Price last confirmed 19 days ago
Retailer 11
-
£769 GBP
View
Price last confirmed 14 days ago
B+
Retailer 12
-
£778 GBP
View
Retailer 13
-
£780 GBP
View
Price last confirmed 38 days ago
B+
Retailer 14
-
£846 GBP
View
B+
Retailer 15
-
£871 GBP
View
B+
Retailer 16
-
£909 GBP
View
B+
Retailer 17
-
£922 GBP
View
B+
Retailer 18
-
£1,015 GBP
View
Retailer 19
-
£1,035 GBP
View
Price last confirmed 33 days ago
B
Retailer 20
-
£1,204 GBP
View
Retailer 21
-
£2,043 GBP
View
Price last confirmed 14 days ago
Most Expensive
NZ Jewellers
e97691f5-6850-4cc3-a733-ef7ac86c9fc3 · Sep 24
£2,120 GBP
$2,854 USD
View
Price last confirmed 43 days ago
21 more retailers have this diamond
Prices start from £484 GBPSave up to £720 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
£484 GBP