This is one cool spider. It is commonly called the oil-can spider. Take a close look at the body and you will see why they are called this. They are not common in Dominican amber (although I would not say they are rare). There is a little confusion in terminology of this genus: it is either Lasaeola or Dipoena (family Theridiidae). The amber is small and thin.
Clear - perfect leaf. The leaf itself is about 1 inch in length by .5 inches in width. This is truly a beautiful piece - museum quality. This would be the shining glory in anyone's collection. It also would look great made into a pendant - the leaf is so large.........so perfect that it draws the eye to it. It is possible to find leaf parts in amber, but to find an entire leaf, well, that is just a rarity.