Final answer:
The black pebble-like object could be a sebaceous filament, a keratin plug, or a small skin cyst. It's recommended to consult a dermatologist for proper diagnosis and treatment.
Step-by-step explanation:
What you described seems like it might be a skin condition related to acne such as a sebaceous filament, a keratin plug, or even a small skin cyst. Sebaceous filaments are often gray or tan in color and are natural parts of the skin that channel the flow of sebum in the pores. They can sometimes be mistaken for blackheads, which are a type of acne lesion that appears black due to oxidation of the debris inside the pore. A keratin plug appears as a tiny bump on the skin and can sometimes be squeezed out. It is made of a hardened protein called keratin that can build up and block hair follicles. Lastly, it is possible to have a tiny skin cyst that can be firm, and if it comes out of the skin, it could resemble a pebble. It's important to approach skin concerns with care and seek the opinion of a healthcare professional or dermatologist for a proper diagnosis and treatment recommendations.