The ring features a cabochon-cut jadeite stone that is very dark green, appearing nearly black in some lighting. Guatemalan jadeite is known for its wide range of colors, including various shades of green and black.
Design The central jadeite stone is pear-shaped and set within a halo of small, clear accent stones, likely diamonds or cubic zirconia.
Metal The setting and band are  set in sterling silver 0.925
Origin The ring is associated with the company Jade Maya, an integrated jade company that mines fine jadeite from the Motagua River region in Guatemala, the same source used by the ancient Maya people. 
Characteristics
Guatemalan jadeite is a durable gemstone, suitable for everyday wear, with a hardness of around 6 to 7 on the Mohs scale and excellent toughness.
The dark color of the jade in this specific ring is a common and high-quality type of Guatemalan jade.
The ring comes in packaging that highlights its authenticity as "100% Genuine Guatemalan Jadeite jade" from the "Original Jade Factory and Archaeology Museum".  We are a authorized dealer for Jade Maya