Kate, I don't think its diversity that's hurting you at all but rather some of your titles.
Would you honestly walk into a shop and ask for a
""Pearly Pink Luscious Lips Pendant Necklace Sweet Sexy Kiss Jewelry Photo Prop Silver Plated Chain ""
Is it a pendant or a photo prop that you are selling? And from the photo it could be just about anything.
https://www.etsy.com/listing/159738617/pearly-pink-luscious-lips-pendant?ref=shop_home_activeI'd suggest that you take a good look at your titles and your photos and then try to rework some of your tags.
Tags like 'I love you', 'luscious lady lips', and 'gimme a kiss' aren't doing you any good at all because like the title they really don't describe what is being sold.
You may want to read the 'critique your own shop' blog post at
etsymentors.blogspot.com/p/critique-your-own-shop.html
to give you some good tips on how to write listings that will sell your products.