I was at Warner Bros. Studios last month and the Smallville Costumes were on display in the Museum (Unfortunately no photos allowed). I noticed the belt buckle Clark wore as The Blur towards the end of the series was made by Diesel Jeans.
Well, after checking eBay ever since, I finally found the same one:
![Click image for larger version.
Name: Smallville Belt.PNG
Views: 11
Size: 549.2 KB
ID: 183121]()
Also, the boots he wears in the final season are Black Redback Alpine boots. He wore the brown variant in earlier seasons:
![Click image for larger version.
Name: RB004.jpg
Views: 9
Size: 44.0 KB
ID: 183122]()
![Click image for larger version.
Name: 231258.jpg
Views: 9
Size: 26.5 KB
ID: 183123]()
Hope this helps anyone making a costume in the future.
Well, after checking eBay ever since, I finally found the same one:

Also, the boots he wears in the final season are Black Redback Alpine boots. He wore the brown variant in earlier seasons:


Hope this helps anyone making a costume in the future.