Hiding beneath its opalescent polycarbonate skin are a number of bright white LEDs which provide clean, green illumination. You can find the Abyss Lamp from Y Lighting for about $500.
Directional sconces pointing upwards or downwards can focus on architectural elements on your home, and draw attention to exterior niches and plantings around your home.
If you are looking for a really cool lamp for your desk, then the Chain Lamp designed by Iliara Marelli for Nemo Italianaluce might be what you’re looking for. Made from case aluminum and lit by 4 bright white (1-watt) LEDs, its articulating body folds flat to form an accent light when you’re not using it for task illumination.
These fixtures are subtle and can be directional, and can be connected to dimmer switches to give a range of light from subtly dim to full brightness to illuminate an entire room.