Currently, the easiest and most cost-effective solution is to create a ring on your own online. There's a lot of transparency using online platforms. With online media, it is more convenient for the retailer to know what you want for the diamond, how much for the ring, and decide if each is worth its price tag.
In most cases, brown diamond prices are usually lower (one of their advantages). However, still, the cost of the setting is usually the more minor part.
Brown diamonds were typically considered good only for industrial use until the 1980s, when abundant quantities of them began to appear in the production of the Argyle mines.
When looking for a brown diamond, it is crucial to be exceptionally detailed about the precise color shade. Therefore, it is irrelevant to resemble the brown & pink diamond variations.
To conclude, what mainly sets the price of a brown diamond is the color.
But color is not only color. The color definition is divided between color hues and intensity (intensity).
Generally speaking, the stronger the color, the more expensive the diamond. A dark or deep brown diamond will be more costly than fancy brown that is more expensive than fancy light brown shade.