Purchase Celtic Engraved MDF Coaster And Grid online at Hanifa Crystals. With these symbols, there is a common theme of love, loyalty, strength, unity and religious belief. Celtic Engraved MDF Coaster symbols have three intertwined parts which represent the belief that everything of significance is in three parts. These included three domains: Earth, sky and sea. There is a tale that the Celtic warrior would wear this sacred rune around his neck in battle to invoke the gods of war for assistance in battle. Book an order for Celtic Engraved MDF Coaster And Grid today online at Hanifa Crystals.