Gemstone Guide Zodiac Gemstones Gemstone Care Mineral Metal Náchodská 864/20 19300 Praha – Horní Počernice Czech Republic Telephone: +420 281 921 139 Fax: +420 281 922 517 E-mail: info@mineral-metal.cz Web: www.mineral-metal.cz/en/ Opening hours: Monday 9:00–16:00 Tuesday 11:00–18:00 Wednesday 11:00–18:00 Thursday 9:00–16:00 Friday 9:00–16:00 Location: maps.google.com: Náchodská 864/20 GPS: 50°6'44.1"N 14°35'41.0"E