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Round|Natural|GIA

0.55ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 2566238867

Certificate GIA 2566238867

Diamond specifications and retailer prices

From £432 GBP
As of November 5, 2026
Save £625 GBP (59%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,058 GBP at MOH London · As of November 4, 2026
View at MOH London

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 2566238867. Listed at 14 retailers as of November 4, 2026, with prices from £432 to £1,058, a £625 spread on the same certified stone. MOH London lists it at £1,058. 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 angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2566238867
Dimensions5.22 × 5.25 × 3.24 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather
Top View
5.22 mm5.25 mm0.55 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2566238867
Side View
Table 58.0%Crown 36°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 61.9%

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: £1,058 GBP|Low: £428 GBP|High: £1,064 GBP|Avg: £655 GBP|-0.6%
MOH London
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
November 6, 2026
Retailer 10£432 GBP
Retailer 13£437 GBP
Retailer 4£533 GBP
Retailer 5£536 GBP
Retailer 14£548 GBP
Retailer 11£582 GBP
Retailer 7£606 GBP
Retailer 8£691 GBP
Retailer 9£698 GBP
Retailer 2£744 GBP
Retailer 6£762 GBP
Retailer 3£789 GBP
Retailer 12£818 GBP
MOH London£1,058 GBP

23 data points across 14 retailers

14 retailers£432 GBP to £1,058 GBP

A
Cheapest Retailer
-
£432 GBP
A
Retailer 2
-
£437 GBP
View
A
Retailer 3
-
£533 GBP
View
Final sale: no returns
Retailer 4
-
£536 GBP
View
Price last confirmed 15 days ago
A
Retailer 5
-
£544 GBP
View
Retailer 6
-
£548 GBP
View
Price last confirmed 15 days ago
A
Retailer 7
-
£582 GBP
View
A
Retailer 8
-
£606 GBP
View
B+
Retailer 9
-
£691 GBP
View
B+
Retailer 10
-
£698 GBP
View
B+
Retailer 11
-
£744 GBP
View
B+
Retailer 12
-
£789 GBP
View
B+
Retailer 13
-
£818 GBP
View
Most Expensive
B
MOH London
864694A57 · Nov 4
£1,058 GBP
View
13 more retailers have this diamond
Prices start from £432 GBPSave up to £625 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
£432 GBP