Round leather cord comes in manyl sizes and colors. It is excellent quality, consistent and fast colors. Often there is a difference in color from lot to lot. Especially untreated  leather cord, (not dyed), may be from almost white to a brownish tan. Round leaher cord usually comes in rolls or spools of 25, 50 or 100 meters.
1 mm  (1/32") to 2 mm (3/32") round leather cord is very popular for Jewelry making.

1  mm Round Leather Cord

1.8 mm Round Leather Cord

2 mm Round Leather Cord

3 mm Round Leather Cord

4 mm Round Leather Cord

5 mm Round Leather Cord

6 mm Round Leather Cord

Please note that the size (thickness) is only indicative and there may be a slight difference.