I don't know if you specifically want Tiffany, but you could probably go to a jeweler and get both pearl and diamond studs for much less. Tiffany items are very beautiful but IMO the simple/classic designs (that aren't distinctively Tiffany) can be found for much cheaper elsewhere. I think I got sterling silver freshwater pearl studs for about $40 on sale.
If you have your heart set on Tiffany, however, I would go for the diamonds. You can put them in and forget about them, whereas I take my pearls out when I wash my hair, go swimming, etc. so they won't lose their luster.
If you have your heart set on Tiffany, however, I would go for the diamonds. You can put them in and forget about them, whereas I take my pearls out when I wash my hair, go swimming, etc. so they won't lose their luster.