Yellow Opal 6-7mm Table Cut Cube - 15-16 Inch Size_4x6-10x14mm Ruby is a precious gemstone

Ruby is a precious gemstone known for its deep red color

On cut or polished stones

with every gradient of gray in between

Moroccan Agate is a variety of Chalcedony

Yellow Opal 6-7mm Table Cut Cube - 15-16 Inch Size_4x6-10x14mm Ruby is a precious gemstoneYellow Opal is transparent to opaque, milky white to pale yellow in color. It sometimes features dark brown to black dendritic inclusions that branch like tiny tree limbs through the stone. Unlike other forms of opal, Yellow Opal does not display the changeable flash of internal luster that other opals are known for. Historically Opal was renowned as the Queen of Gems for its desirability and beauty.