CaratHunter
Plans
Round|Natural|GIA

0.50ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2557722338

Certificate GIA 2557722338

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)
20 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 2557722338. Listed at 20 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°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 2557722338
Dimensions5.06 × 5.09 × 3.18 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal, Feather
Top View
5.06 mm5.09 mm0.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557722338
Side View
Table 59.0%Crown 34°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 62.6%

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: £1,165 GBP|Avg: £698 GBP|-1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 7£347 GBP
Retailer 6£594 GBP
Retailer 2£606 GBP
Retailer 1£642 GBP
Retailer 3£663 GBP
Retailer 8£749 GBP
Retailer 4£770 GBP
Retailer 5£1,151 GBP

38 data points across 8 retailers

20 retailers£347 GBP to £1,564 GBP

A
Cheapest Retailer
-
£347 GBP
Final sale: no returns
A
Retailer 2
-
£452 GBP
View
A
Retailer 3
-
£466 GBP
View
A
Retailer 4
-
£471 GBP
View
Retailer 5
-
£486 GBP
View
Price last confirmed 21 days ago
B+
Retailer 6
-
£486 GBP
View
B+
Retailer 7
-
£521 GBP
View
B+
Retailer 8
-
£535 GBP
View
B+
Retailer 9
-
£552 GBP
View
B
Retailer 10
-
£594 GBP
View
B+
Retailer 11
-
£596 GBP
View
B+
Retailer 12
-
£606 GBP
View
B+
Retailer 13
-
£631 GBP
View
B+
Retailer 14
-
£642 GBP
View
B+
Retailer 15
-
£663 GBP
View
Retailer 16
-
£749 GBP
View
Price last confirmed 33 days ago
B
Retailer 17
-
£770 GBP
View
B
Retailer 18
-
£1,151 GBP
View
B
Retailer 19
-
£1,431 GBP
View
Most Expensive
B
NZ Jewellers
c7a7a72c-47a7-450f-9917-1a85d6288ba6 · Nov 4
£1,564 GBP
$2,094 USD
View
19 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