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Round|Natural|GIA

0.50ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6552576591

Certificate GIA 6552576591

Diamond specifications and retailer prices

From £347 GBP
As of November 4, 2026
Save £1,217 GBP (78%) vs most expensive(unlock to see where)
29 retailers carry this diamond
Most expensive: £1,564 GBP at NZ Jewellers · As of November 4, 2026
View at NZ Jewellers

About this 0.5ct natural round diamond

This 0.5ct natural round sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6552576591. Listed at 29 retailers as of November 4, 2026, with prices from £347 to £1,564, a £1,217 spread on the same certified stone. NZ Jewellers lists it at £1,564. 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

0.50
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 6552576591
Dimensions5.04 × 5.07 × 3.16 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather
Top View
5.04 mm5.07 mm0.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552576591
Side View
Table 60.0%Crown 34.5°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 62.5%

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 4
Current: £642 GBP|Low: £347 GBP|High: £1,245 GBP|Avg: £690 GBP|-1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 11£347 GBP
Retailer 7£377 GBP
Retailer 3£486 GBP
Retailer 9£594 GBP
Retailer 4£606 GBP
Retailer 1£642 GBP
Retailer 5£663 GBP
Retailer 2£749 GBP
Retailer 6£770 GBP
Retailer 8£1,151 GBP
Retailer 10£1,245 GBP

38 data points across 11 retailers

29 retailers£347 GBP to £1,564 GBP

A
Cheapest Retailer
-
£347 GBP
Final sale: no returns
A
Retailer 2
-
£377 GBP
View
A
Retailer 3
-
£452 GBP
View
Retailer 4
-
£463 GBP
View
Price last confirmed 43 days ago
A
Retailer 5
-
£466 GBP
View
A
Retailer 6
-
£471 GBP
View
Retailer 7
-
£486 GBP
View
Price last confirmed 21 days ago
B+
Retailer 8
-
£486 GBP
View
B+
Retailer 9
-
£498 GBP
View
B+
Retailer 10
-
£521 GBP
View
B+
Retailer 11
-
£530 GBP
View
B+
Retailer 12
-
£535 GBP
View
B+
Retailer 13
-
£552 GBP
View
B+
Retailer 14
-
£575 GBP
View
B+
Retailer 15
-
£575 GBP
View
B+
Retailer 16
-
£590 GBP
View
B
Retailer 17
-
£594 GBP
View
B+
Retailer 18
-
£596 GBP
View
B+
Retailer 19
-
£606 GBP
View
B+
Retailer 20
-
£631 GBP
View
B+
Retailer 21
-
£642 GBP
View
B+
Retailer 22
-
£663 GBP
View
B+
Retailer 23
-
£694 GBP
View
Retailer 24
-
£749 GBP
View
Price last confirmed 33 days ago
B
Retailer 25
-
£770 GBP
View
B
Retailer 26
-
£1,151 GBP
View
B
Retailer 27
-
£1,245 GBP
View
B
Retailer 28
-
£1,431 GBP
View
Most Expensive
B
NZ Jewellers
cf69cd33-9a1a-4024-aa60-a002fac21ee3 · Nov 4
£1,564 GBP
$2,094 USD
View
28 more retailers have this diamond
Prices start from £347 GBPSave up to £1,217 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
0.50ct Round
£347 GBP