18k yellow gold ring with centre stone ruby oval cut (Afghanistan)

This is a 18k yellow gold ring, set with a centre stone of an afghanistan oval cut untreated ruby. The gemstone weighs 1.89ct and has the dimensions of 8.5x6.7x3.15mm. There are also two side stones, with diamonds around 0.15cts. The size is p, while the total weight is 4.5g.