Alexandrite

Colour: Varies from teal to forest green changing to violet, crimson red, raspberry, purple and orange

Name derivation: Derived from the name of the young Tsarevitch, who was crowned Tsar Alexander II in 1855

Symbolism: Said to bring good luck, spiritual and physical well-being

Gemstone family: Chrysoberyl

Anniversary: 45th or 55th wedding anniversary (modern)

Birthstone: June

Hardness: Moh’s Scale 8.5 (very robust)

Geography: The finest come from Brazil, Madagascar, India, Tanzania, Russia - Russian Alexandrite maintains an historical pedigree that is highly coveted

Interesting facts: In Russia it is believed that if you only wear one piece of Alexandrite jewellery, it may invite loneliness due to the fact that it should possess dual colours. Often described as “Emerald by day” and “Ruby by night”, when viewed under sunlight, Alexandrite appears teal to forest green, but when seen by candlelight, it appears violet or crimson red

Inclusions: Inclusions are a common feature. Far from being flaws, inclusions are a hallmark of authenticity that helps us distinguish real gems from artificial impostors

Cleaning procedure: Cleaning procedure: Not an issue due to its hardness

Value factors: Rarity, Intensity of colour and change in colour; Brilliance and "life" of stone; Size of stone