Research the seller: Do some research on the seller or dealer you are considering buying from. Look for reviews and feedback from previous customers, and make sure that they have a good reputation for selling high-quality amber. Consider the condition: 19th-century amber that has been well-preserved and cared for can be a valuable and beautiful addition to any collection. However, it is important to examine the condition of the amber before making a purchase. Look for any cracks, chips, or other signs of damage that could affect its value or durability.