Photography involving Minerals

[tonyn22]

Hello, my name is Tony. This is my first post on this website. I have a hobby of collecting assorted minerals from around the world. I would like to photograph them so that I can share them on social media. I was wondering if there are any phone settings I should change or accessories that anyone would suggest getting to achieve the best quality photos. These specimens vary in size but the smallest is 1.5 cm. The iphone model I have is the 14 plus. I have also attached one of my attempts below.