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Round|Natural|GIA

0.55ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 6511419240

Certificate GIA 6511419240

Diamond specifications and retailer prices

From £802 GBP
As of November 4, 2026
Save £1,042 GBP (56%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £2,463 GBP at NZ Jewellers · As of November 4, 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 6511419240. Listed at 22 retailers as of November 4, 2026, with a 130% 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
FluorescenceFaint
Crown angle33.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6511419240
Dimensions5.36 × 5.32 × 3.19 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
5.36 mm5.32 mm0.55 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6511419240
Side View
Table 59.0%Crown 33.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 59.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £1,108 GBP|Low: £704 GBP|High: £1,872 GBP|Avg: £1,219 GBP|+3.5%
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 8£802 GBP
Retailer 10£845 GBP
Retailer 3£877 GBP
Retailer 12£950 GBP
Retailer 9£1,003 GBP
Retailer 1£1,108 GBP
Retailer 4£1,144 GBP
Retailer 5£1,303 GBP
Retailer 11£1,317 GBP
Retailer 6£1,558 GBP
Retailer 2£1,647 GBP
Retailer 7£1,844 GBP

45 data points across 12 retailers

22 retailers£802 GBP to £1,844 GBP

B+
Cheapest Retailer
-
£802 GBP
B+
Retailer 2
-
£845 GBP
View
Final sale: no returns
B+
Retailer 3
-
£873 GBP
View
B+
Retailer 4
-
£877 GBP
View
B+
Retailer 5
-
£915 GBP
View
Retailer 6
-
£915 GBP
View
Price last confirmed 8 days ago
B+
Retailer 7
-
£950 GBP
View
B
Retailer 8
-
£1,003 GBP
View
B
Retailer 9
-
£1,056 GBP
View
B
Retailer 10
-
£1,092 GBP
View
B
Retailer 11
-
£1,092 GBP
View
B
Retailer 12
-
£1,108 GBP
View
B
Retailer 13
-
£1,129 GBP
View
B
Retailer 14
-
£1,144 GBP
View
B
Retailer 15
-
£1,270 GBP
View
B
Retailer 16
-
£1,303 GBP
View
Retailer 17
-
£1,317 GBP
View
Price last confirmed 32 days ago
B
Retailer 18
-
£1,558 GBP
View
B
Retailer 19
-
£1,647 GBP
View
B
Retailer 20
-
£1,771 GBP
View
B
Retailer 21
-
£1,844 GBP
View
Most Expensive
NZ Jewellers
fc518b71-e872-449c-a74e-39cfca248c75 · Nov 4
£2,463 GBP
$3,315 USD
View
Price under review
21 more retailers have this diamond
Prices start from £802 GBPSave up to £1,042 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.

B+
0.55ct Round
£802 GBP