This is a lovely brown acorn necklace that is in my Etsy store. It has a brown glass pearl and antique brass accents for a vintage look and feel.
It can be seen here: Acorn Necklace with Brown Glass Pearl
There are also matching earrings for this necklace:
They are also available in my Etsy shop here:
Brown Acorn Earrings by Lovegrant on Etsy
Or how about a lovely brass oak leaf to wear as a focal point or statement item for your favorite outfit? This oak leaf necklace is available in my Artfire shop. The link is below the photo:
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Brass Oak Leaf Fall Necklace