Images from jacquelineryan.com
The first 4 are brooches, by the way. Jacqueline Ryan's jewellery are made of 18k gold, vitreous enamel and/or freshwater pearls. No prices listed on her website though.
Sometimes you just have to marvel at the beauty of an artist's creations. Even if you can't buy them.
The last necklace is calling out to me.