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Interpupillary distance: 55 to 75mm
Built-in diamond and simulant test discs for reference
55mm Nylon Silkon
Simple to install and operate
1000 * Ceramic Capacitor
5.06ct Freeform Drop Shape Boulder Opal Pair 13x6mm Digigard Finger Tape Interpupillary distance: 55 to 75mmOpal is probably the most famous phenomenal stone displaying the unparalleled play of colour, a rainbow coloured kaleidoscopic effect. The name opal derives from the word 'opalus' given by the Romans, which is Latin for 'precious stone'. They can be fragile which makes it more suitable for jewellery such as necklaces, brooches and earrings that are less likely to be knocked. Opal is the birthstone for October. Mohs Scale of Hardness: 5. 5 6. 5