The term 'Blue Gem' can refer to two different things: LAPIS (5 letters) and LAPIS Lazuli (11 letters). LAPIS is a semi-precious stone that is usually a deep blue color with golden flecks. It is often used in jewelry and other decorative items. LAPIS Lazuli is a type of rock that is composed of several minerals, including lazurite, calcite, and pyrite. It is also a deep blue color and is often used in jewelry and other decorative items. Both LAPIS and LAPIS Lazuli are considered to be beautiful and valuable stones, and are often referred to as 'blue gems'.