A frame with a purpose
The setting is often described through what it surrounds. Yet it also has a character of its own: a line of metal, a series of supporting points, a transition towards a chain or a ring band. These elements decide how the central form is presented to the eye.
Consider the balance between the stone and the visible frame. Does the metal follow the outline closely, or create a deliberate interval? Is the composition symmetrical, or does it draw attention in one direction? These are ways to understand design, rather than rules for judging every jewel alike.
Ask for the other views
A frontal photograph makes the main composition clear. A side view can explain its depth. The reverse can reveal the relationship between the central form and the structure through which it is worn. Each view answers a different question.
For a ring, you may want to understand how high it sits. For a pendant, look at the connection to the chain. For earrings, ask about the fastening and intended orientation. Details that are easy to overlook in an image can become important in everyday use.
Look beyond a visual impression
A setting can appear delicate or substantial without a photograph establishing its security or comfort. Those questions depend on the actual construction, fit and condition of the piece. Ask for an explanation where those details matter to your choice.
Before choosing, look at the whole construction. A ring may have an appealing front but sit higher than you expected. An earring may use an unfamiliar fastening. These are details worth resolving while you can ask questions about the piece.