June Birthstone

The process of formation of a pearl inside the body of a mollusc takes about 7 to 8 years.
Historically, pearls have been used as an adornment for centuries. They were one of the favorite gem materials of the Roman Empire; later in Tudor England, the 1500s were known as the pearl age. Pearls are unique as they are the only gems from living sea creatures and require no faceting or polishing to reveal their natural beauty. In the early 1900s, the first successful commercial culturing of round saltwater pearls began. Since the 1920s, cultured pearls have almost completely replaced natural pearls in the market.
Pearl is the only gemstone formed as a result of biological activities of living creatures. A pearl is used for making jewelry since ages due to its luminance and inner glow. It symbolizes beauty, love, happiness, and wealth. Purity and piety act as cornerstones when describing the property of pearls.
Alexandrite is the rare, phenomenal, color-change variety of the chrysoberyl mineral, along with its cousins yellowish transparent chrysoberyl and chatoyant or cat's-eye chrysoberyl. Alexandrite's rarity is a result of its chemical makeup; alexandrite can only form when aluminum and beryllium combine with trace elements like iron, titanium and, most importantly, chromium--which causes alexandrite's color change and is very rarely found in nature. The unlikelihood of the rare element chromium being in the right place to combine with aluminum and beryllium under exactly the right conditions to create alexandrite is what makes it so rare and valuable.
June Birthstone - Alexandrite
A relatively modern gem, Alexandrite, was first discovered in Russia in 1831 during the reign of its namesake, Czar Alexander II, and is an extremely rare chrysoberyl with chameleon-like qualities. Its color is a lovely green in both daylight and fluorescent light; it changes color to a purplish red in incandescent light.