BR is the abbreviation of BROWN, which stands for brown diamond. Because diamonds are formed in nature, they will be mixed with other elements. Generally speaking, brown, green and blue are the most. Brown diamonds are yellowish brown in natural light, just like light brown, so our jargon is called brown. Because diamonds like this will visually affect the beauty of diamonds and the color grade of diamonds, the same grade of brown diamonds will be much cheaper.
Unfortunately, there is no authoritative certificate, including GIA, which does not indicate the color of coffee. It can only be identified by re-inspection.
There is also a trustworthy merchant like us, and we promise never to sell diamonds with coffee and cream.