A mixed order gives a buyer a way to test several 925 silver moissanite categories without losing control of the brief. The key is to group decisions by category and finish instead of treating every SKU as a separate project.
List each item with its design reference, stone shape and size, metal finish, color, ring-size range where relevant, quantity, packaging and photo requirement. This makes gaps visible before sampling or production starts.
Keep the first order coherent: use a small number of stone shapes and plating colors, then add variety through ring, earring, necklace and bracelet formats. A clear order sheet also makes future replenishment easier to discuss.