Before Adding a Gem to a Tooth
Tooth gems can collect plaque and affect enamel. Consider the dental risks, removal and alternatives before following a social-media demonstration.

A small gem can look like a minor accessory in a video. It still changes the surface you need to clean every day. The American Dental Association advises against tooth gems and other cosmetic oral jewellery because of the potential for adverse dental effects. That recommendation includes considering what happens after the photograph is taken.[1]
The cleaning problem does not need to be large
The ADA identifies plaque accumulation around gems and other oral jewellery as a concern, with potential for decay and gum inflammation. It also describes enamel damage and chipped teeth among the possible problems associated with oral jewellery. A small size or a professional-looking application video does not establish that your tooth is suitable.[1]
Before making a decision, ask your dentist about the surface involved, existing fillings or veneers, and how the area could be cleaned. Explain if you already have sensitivity, gum irritation or difficulty reaching that tooth. The useful conversation starts with the condition of the tooth rather than the colour of the stone.
Ask about removal before placement
Who would remove it, what would removal involve, and how would the enamel be checked afterwards? Ask what happens if the gem loosens or the surrounding area becomes sore. Do not treat a promise that something is temporary as an explanation of how it will be taken off.
Avoid household glue and do not file or scrape your tooth to copy an online demonstration. If a gem is already present, tell the dental team what was used and when. Bring any available product details instead of guessing from the appearance of the adhesive.
A decision can end without a procedure
You can decide the maintenance and removal questions are more than you want from an accessory. If you have already developed pain, a rough surface or gum irritation, arrange dental advice and avoid picking at the gem. The next step is an assessment of the actual tooth and attachment.