Designing a logo with black shining pearls

Create a circle using elliptical shape tool.

Ctrl+Click to get the selection. Contract the selection by 3 pixels. Create a new layer. Apply Black to white gradient. Change layer mode to "linear light" for this layer.

Duplicate the layer scale it down. Press Ctrl+I to invert the colors.

Similarly create another layer.

Create an elliptical selection using elliptical marquee tool. Create a new layer. Apply transparent to white gradient.