Checkout www.DropShippingbyGlobalCrafts.com - we are 12 year old wholesale company that recently added the drop ship aspect to our business. All the product is handmade, around 50% or 1000 sku's are Jewelry. Our feeds are all setup for Shopify. We would love to work with you.
In regards to your post about connecting to a new jewelry wholesaler, this app (https://apps.shopify.com/jewelry-store) is specially designed for jewelry. It connects wholesalers and retailers together on Shopify.