Hi! You have been given a lot of great ideas, and here are mine to add...
First, I would order matching VA earrings. For a simple pendant, I personally think matching Alhambra earrings look fabulous. If you don't want to SO, then I agree with
@nicole0612 and I would go with the RG pave Alhambra earrings. I like staying with the Alhambra theme as it brings more relevance to your pendant.
If you want something more creative and fun, I have always thought carnelian looks amazing with GMOP, especially with GMOP that has a lot of pink (e.g. red) and green as yours does. The carnelian brings out those red/green rainbow colors. Therefore, how about Sweets Carnelian earrings? It stays in the Alhambra theme which I really like, and you get a tiny pop of red. It's a fun look, not serious at all but in a good way as GMOP can sometimes look serious.
Below are two photos so you can visualize. I love carnelian with GMOP for some reason, the bold pop of red is such nice contrast to the subtle GMOP and brings out the rainbow. The two pieces tie together as they are both Alhambra and RG. I can see this fun combo for spring as people start to wear more colors.
On the Sweets, you will not like the La Pousette backings they come with as they are the same as the mini Frivole earrings. I can't deal with La Pousette backs either, too much effort for me. You can ask VCA to switch the earrings out to a regular post (you can do that with your mini Frivoles too).
Just a thought for another idea. You might not like it though. I hope this was helpful.
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