CaratHunter
Plans
Round|Natural|GIA

0.50ct J SI1 Round Natural Diamond

VG • J/SI1 • GIA 6495450286

Certificate GIA 6495450286

Diamond specifications and retailer prices

From £276 GBP
As of November 6, 2026
Save £1,073 GBP (80%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £1,349 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 6495450286. Listed at 24 retailers as of November 4, 2026, with prices from £276 to £1,349, a £1,073 spread on the same certified stone. NZ Jewellers lists it at £1,349. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.50
Carat
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle31°
Pavilion angle42.2°
OriginNatural
Grading LabGIA
CertificateGIA 6495450286
Dimensions5.09 × 5.03 × 3.11 mm
L/W Ratio1.01
Star length55%
Lower girdle80%
Top View
5.09 mm5.03 mm0.50 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6495450286
Side View
Table 64.0%Crown 31°Girdle: STK-THKPavilion 42.2°Culet: NoneDepth 61.5%

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 6
Current: £452 GBP|Low: £276 GBP|High: £822 GBP|Avg: £472 GBP|-1.8%
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 10£276 GBP
Retailer 2£325 GBP
Retailer 6£362 GBP
Retailer 4£432 GBP
Retailer 5£448 GBP
Retailer 1£452 GBP
Retailer 8£481 GBP
Retailer 11£505 GBP
Retailer 7£545 GBP
Retailer 3£563 GBP
Retailer 9£811 GBP

35 data points across 11 retailers

24 retailers£276 GBP to £1,349 GBP

A
Cheapest Retailer
-
£276 GBP
B+
Retailer 2
-
£325 GBP
View
Final sale: no returns
B+
Retailer 3
-
£351 GBP
View
A
Retailer 4
-
£362 GBP
View
B+
Retailer 5
-
£362 GBP
View
B+
Retailer 6
-
£374 GBP
View
Retailer 7
-
£379 GBP
View
Price last confirmed 8 days ago
B+
Retailer 8
-
£379 GBP
View
B+
Retailer 9
-
£383 GBP
View
B+
Retailer 10
-
£406 GBP
View
B+
Retailer 11
-
£406 GBP
View
B+
Retailer 12
-
£432 GBP
View
B+
Retailer 13
-
£448 GBP
View
B+
Retailer 14
-
£449 GBP
View
B+
Retailer 15
-
£452 GBP
View
B+
Retailer 16
-
£463 GBP
View
B+
Retailer 17
-
£481 GBP
View
B
Retailer 18
-
£490 GBP
View
B
Retailer 19
-
£496 GBP
View
B
Retailer 20
-
£505 GBP
View
B
Retailer 21
-
£545 GBP
View
Retailer 22
-
£563 GBP
View
Price last confirmed 34 days ago
B
Retailer 23
-
£811 GBP
View
Most Expensive
C
NZ Jewellers
2bf60d4b-caab-4a0c-94f0-101c968453b3 · Nov 4
£1,349 GBP
$1,815 USD
View
23 more retailers have this diamond
Prices start from £276 GBPSave up to £1,073 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
£276 GBP