Hi there! I really like the idea of jewelry inspired by the planets. I would put the most important info first, like the size, and the materials used. Also, I think it might help if you repeat 1 or 2 relevant keywords from the title in the description, a SEO tip I read about.
Here's how I would rewrite the description for the Mercury earrings. You don't have to take any of this, it's just my ideas.
THE MERCURY EARRINGS -
The Mercury earrings are very lightweight and easily transition from day to night.
Features: Silver plated french ear wires, completely nickel free, simple statement earrings (Something here about the stones used, and the inspiration involved in using them.)
Measurement: 1.5" from top of ear wire
Mercury is a small and rocky planet with a huge temperature variation, ranging from −280 °F (−173 °C) at night to 800 °F (427 °C).
These earrings represent that variation with small lava and pyrite beads.
Message me your choice of styles when you order two pairs, default is one pair of each Lava on Top and Pyrite on Top so you can mix and match
Your order will arrive in a kraft paper jewelry box, ready to gift or add to your own jewelry collection.
This piece of statement jewelry is part of the Cosmos Collection, my jewelry collection which is inspired by the beauty and wonder of outer space.
I'm not sure if that was helpful, but I hope it was! To me, it's mostly about placement of information, and really highlighting the benefits to the customer.