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Moss Opal - Tumble.
Moss opal is a milky white to brownish opal with dark greenish inclusions that resemble moss. Moss opal may also be referred to as "dendritic opal" because of the tree-like appearance of the inclusions, or "dendrites", which comes from the Greek word, "dendron", meaning "tree".
The word "opal" is thought to originate from the Sanskrit word "upala", meaning "precious stone". Opals have long been used as gemstones and were thought to possess supernatural powers. In the Middle Ages, opals were considered lucky and some even believed that an opal wrapped in a bay leaf would provide the owner with the power of invisibility. Opal by definition is hydrated silicon dioxide, always containing three to thirty percent water. That characteristic and its relative softness with a rating of 5.5 ? 6.5, means that this gemstone requires some special care.
- Country of Origin: Australia
- Dimensions: 10mm to 20mm x 10mm (may vary)
- Weight: 2.5g (may vary)
- Price are per/stone.
Moss opals are delicate gemstones. Their most significant vulnerability has to do with their water content. If an opal is allowed to dry, it will crack and fade. If you live in a very dry climate, or keep them in a dehumidified room, some precautions are necessary. Keeping them in a tight plastic bag, with a damp piece of cotton or fabric will prevent dehydration. Due to their water content, opals are also highly sensitive to sudden changes in temperature. Being somewhat soft, they scratch easily. A large component of dust is quartz, which scores 7 on the Mohs scale of hardness. At 5.5 to 6 in hardness, simply wiping the dust off an opal will gradually reduce its polish. The solution is to clean opals using a soft cloth.
As with most gemstones, ultrasonic cleaners and steamers are not recommended. Always remove any jewellery or gemstones before cleaning or engaging in harsh physical activities such as sport. Store opal gemstones away from other gemstones to avoid scratches. It is best to wrap gemstones in soft cloth or place them inside a fabric-lined jewellery box.