The collar of this brush is Oryx horn, but it was also casted in resin to fill the void in the horn and turned down, this is why the brush has an 'island of horn' on the belly section. The brush has some blue and white flow in the resin, and looks pretty cool when turned about in good light.
The brush stands 142 mm tall, with the loft at 58 mm. The waist is 27 mm and the belly around 42. The brush weighs 129 grams, get lathering!