Here's my version of the rank pips from Picard--still sort of a work in progress until I can get more accurate references. The lighting on the show made it difficult to see the pips clearly, but it appears to me the โblackโ pips were simply the regular silver ones painted fully black or carbon black.
The admiral ranks are available in two printing styles, depending on how you want to print them. You can do them the same as the TNG style where you color swap the inner panels or you can print them simpler with just the black part being separate. I suggest using the โironingโ feature in your slicer for best appearance for the black parts.
Uses 6x2mm magnets and the backplates are the same as used for the TNG ones.
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https://www.etsy.com/shop/trekkietime/?etsrc=sdt
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The author marked this model as their own original creation.