If you decided to go with the metal labret stud, you can use different metals and different ends. Labrets are available in gold, steel and titanium (colored and plain), and can be fitted with spikes, balls, or gemstone ends in any of these metals.

Information on labret piercing: Labret is the most popular lip piercing.
The root word is Latin labrum which means lip.
The -et suffix means "something worn on"
So combination of those two creates Labret - Something worn on the lip.
The term "labret", correctly pronounced "la-bret" generally refers to a single piercing on a lower lip below the center, about half-way between the edge of the lower lip and the top of the chin.
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