US guides
Filters are the fast path. A request is the path when you know the US budget and the look, and the current grid is not quite it.
Budget in USD, shape, carat band, lab-grown or natural, and the color and clarity you will not go below. A sentence such as “oval, around 1.5 carat, lab-grown, G color, VS2, under my budget” is enough to search against.
The describe search on Carat Mate turns plain language into filters. Use that first. If the grid is still wrong, the request form is the human follow-up.
Options should come back as certified diamonds you can open, not as a verbal grade promise. Then the US shipping path is the same: confirm the stone, pay, receive the report.