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5.50ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 5202226957

Certificate GIA 5202226957

Diamond specifications and retailer prices

From £109,541 GBP
As of October 31, 2026
Save £68,394 GBP (38%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £177,935 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 5.5ct natural round diamond

This 5.5ct natural round sits in the over five carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5202226957. Listed at 11 retailers as of October 29, 2026, with prices from £109,541 to £177,935, a £68,394 spread on the same certified stone. MOH London lists it at £177,935. 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

5.50
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle34°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 5202226957
Dimensions11.42 × 11.39 × 6.92 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Top View
11.42 mm11.39 mm5.50 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 5202226957
Side View
Table 58.0%Crown 34°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.7%

Caratlytics Score

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

Price History

Last verified: Oct 31
Current: £177,935 GBP|Low: £104,241 GBP|High: £179,120 GBP|Avg: £123,959 GBP|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 8£105,559 GBP
Retailer 6£108,334 GBP
Retailer 2£109,541 GBP
Retailer 7£112,581 GBP
Retailer 10£118,047 GBP
Retailer 5£119,644 GBP
Retailer 9£121,047 GBP
Retailer 3£133,987 GBP
Retailer 4£136,390 GBP
MOH London£177,935 GBP

43 data points across 10 retailers

11 retailers£109,541 GBP to £177,935 GBP

Retailer 1
-
£105,559 GBP
A$217,596 AUD
Price last confirmed 27 days ago
Retailer 2
-
£108,334 GBP
$145,155 USD
View
Price last confirmed 13 days ago
B+
Retailer 3
-
£109,541 GBP
View
B+
Retailer 4
-
£112,581 GBP
$150,846 USD
View
Final sale: no returns
B+
Retailer 5
-
£118,047 GBP
$158,170 USD
View
B+
Retailer 6
-
£119,644 GBP
$160,310 USD
View
Retailer 7
-
£121,047 GBP
View
Price last confirmed 31 days ago
B+
Retailer 8
-
£126,621 GBP
€161,579 EUR
View
B+
Retailer 9
-
£133,987 GBP
€170,979 EUR
View
B+
Retailer 10
-
£136,390 GBP
ZAR 2,952,303 ZAR
View
Most Expensive
B
MOH London
0EB984E8D · Oct 29
£177,935 GBP
View
10 more retailers have this diamond
Prices start from £109,541 GBPSave up to £68,394 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+
5.50ct Round
£109,541 GBP