Round|Natural|GIA

0.55ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 5556597374

Certificate GIA 5556597374

Diamond specifications and retailer prices

From £561 GBP
As of November 6, 2026
Save £779 GBP (58%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £2,314 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5556597374. Listed at 20 retailers as of November 2, 2026, with a 139% 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 angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 5556597374
Dimensions5.22 × 5.19 × 3.24 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
5.22 mm5.19 mm0.55 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5556597374
Side View
Table 58.0%Crown 36°Girdle: Slightly ThickPavilion 40.6°Culet: NoneDepth 62.2%

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: £2,314 GBP|Low: £553 GBP|High: £2,314 GBP|Avg: £920 GBP|+3.5%
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
November 6, 2026
Retailer 3£561 GBP
Retailer 2£563 GBP
Retailer 15£675 GBP
Retailer 17£684 GBP
Retailer 7£738 GBP
Retailer 10£738 GBP
Retailer 8£767 GBP
Retailer 6£796 GBP
Retailer 16£817 GBP
Retailer 13£843 GBP
Retailer 11£844 GBP
Retailer 9£851 GBP
Retailer 18£944 GBP
Retailer 4£953 GBP
Retailer 14£977 GBP
Retailer 12£1,129 GBP
Retailer 5£1,340 GBP
NZ Jewellers£2,314 GBP

27 data points across 18 retailers

20 retailers£561 GBP to £1,340 GBP

A
Cheapest Retailer
-
£561 GBP
A
Retailer 2
-
£563 GBP
View
B+
Retailer 3
-
£675 GBP
View
Final sale: no returns
A
Retailer 4
-
£684 GBP
View
Retailer 5
-
£738 GBP
View
Price last confirmed 8 days ago
Retailer 6
-
£738 GBP
View
Price last confirmed 9 days ago
Retailer 7
-
£767 GBP
View
Price last confirmed 9 days ago
B+
Retailer 8
-
£796 GBP
View
B+
Retailer 9
-
£817 GBP
View
B+
Retailer 10
-
£843 GBP
View
B+
Retailer 11
-
£844 GBP
View
Retailer 12
-
£851 GBP
View
Price last confirmed 10 days ago
B+
Retailer 13
-
£944 GBP
View
B+
Retailer 14
-
£953 GBP
View
B+
Retailer 15
-
£960 GBP
View
Retailer 16
-
£973 GBP
View
Price last confirmed 32 days ago
B+
Retailer 17
-
£977 GBP
View
B
Retailer 18
-
£1,129 GBP
View
B
Retailer 19
-
£1,340 GBP
View
Most Expensive
NZ Jewellers
043d5255-ff83-40b6-b042-a81e81d9236f · Oct 30
£2,314 GBP
$3,115 USD
View
Price last confirmed 7 days ago
19 more retailers have this diamond
Prices start from £561 GBPSave up to £779 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
£561 GBP