Branvas carries 160 dropship-ready ring styles — adjustable open designs, sized bands, eternity and statement pieces — in 18K gold-plated eco-brass, S925 sterling silver and gold-plated stainless steel. Most of the range is adjustable and needs no size chart at all. Order one unit at a time, after your customer pays, shipped in your own branded packaging for a flat $8.99 DDP.

There are 160 published ring styles. Suggested retails run $19 to $399 with a median of $39. Gross margins run 49% to 80%, median 66%, before shipping and payment fees.
Mostly no. Most of the 160 styles are adjustable open designs with no size variant, so they carry no size chart and no size-exchange workflow. The rest sync as fixed US sizes (US 6 to 9, most commonly US 7 and US 8) — those are the only styles a customer can order in the wrong size.
Only the styles built on a stainless steel base — a few in the range. The rest are gold-plated eco-brass or sterling silver, neither of which is water-safe: plating wears at contact points and sterling tarnishes in humidity.