I need an app developed for my jewellery stores

We are one of the largest jewellery wholesalers in India, we need an app with features:
● Product adding/listing
● Location selecting and functionality
● Gold rate updating(automated)
● Purchase
● Delivery
● Payment gateway integration
● Admin Panel
● Stock management
● Cart
● Wishlist
● Shipment and tracking integration
We want to see a basic prototype before you start on the main development.