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Round|Natural|GIA

0.55ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 6555218545

Certificate GIA 6555218545

Diamond specifications and retailer prices

From £383 GBP
As of November 5, 2026
Save £1,502 GBP (80%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £2,511 GBP at NZ Jewellers · As of November 2, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6555218545. Listed at 14 retailers as of November 2, 2026, with a 393% 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555218545
Dimensions5.22 × 5.26 × 3.25 mm
L/W Ratio1.01
Top View
5.22 mm5.26 mm0.55 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555218545
Side View
Table 58.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 62.0%

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 5
Current: £2,511 GBP|Low: £337 GBP|High: £2,511 GBP|Avg: £696 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
November 6, 2026
Retailer 6£383 GBP
Retailer 4£468 GBP
Retailer 5£597 GBP
Retailer 7£687 GBP
Retailer 2£756 GBP
Retailer 8£950 GBP
Retailer 3£1,030 GBP
Retailer 13£1,065 GBP
Retailer 10£1,077 GBP
Retailer 9£1,188 GBP
Retailer 11£1,366 GBP
Retailer 12£1,885 GBP
NZ Jewellers£2,511 GBP

39 data points across 13 retailers

14 retailers£383 GBP to £1,885 GBP

A
Cheapest Retailer
-
£383 GBP
A
Retailer 2
-
£468 GBP
View
A
Retailer 3
-
£490 GBP
View
A
Retailer 4
-
£597 GBP
View
A
Retailer 5
-
£687 GBP
View
B+
Retailer 6
-
£756 GBP
View
B
Retailer 7
-
£950 GBP
View
Final sale: no returns
B
Retailer 8
-
£1,030 GBP
View
B
Retailer 9
-
£1,065 GBP
View
B
Retailer 10
-
£1,077 GBP
View
B
Retailer 11
-
£1,188 GBP
View
B
Retailer 12
-
£1,366 GBP
View
B
Retailer 13
-
£1,885 GBP
View
Most Expensive
NZ Jewellers
139f609a-e160-479d-86c8-182dc5e62dd1 · Nov 2
£2,511 GBP
$3,380 USD
View
Price under review
13 more retailers have this diamond
Prices start from £383 GBPSave up to £1,502 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
£383 GBP