I checked the popularity of the keywords in one of your listings on Keyword Planner -
https://www.etsy.com/listing/277927474/long-necklace-boho-beaded-necklaceI also checked a few other keywords. Here are the results
beaded necklace 26,581
beaded necklaces 79,538
beaded pendant necklace 174
blue pendant necklace 297
blue single pendant jewelry 0
bohemian necklace 1,291
boho beaded necklace 31
boho necklace 2,602
long necklace 17,249
long necklaces 33,055
natural stone pendants 102
necklaces for women 122,487
pendant jewelry 2,960
single pendant jewelry 0
stone jewelry 18,827
stone pendant necklace 625
stone pendant necklaces 215
The number on the right is the average number of times each keyword is used in searches each month.
You can see that some of your keywords are never used by shoppers and others are highly popular and have too much competition from other Etsy sellers to work well for you. There are a few keywords in this list that could work well for you and hundreds more keywords to choose from on Keyword Planner. - adwords.google.com (click on Skip Guided Setup to get around setting up a Google Ad)