CultureEssayHistoryJapanese traditionUncorrected Toru Jan 08, 2016Jan 07, 2024 crystal, diamond, emerald, floral emblems, jade, national birds, national flag color, national flowers, national gemstones, national image, opal, pearl, ruby, sapphire, specialties, stones, symbolizes, trade culture National Gemstone Many people may be familiar with national flowers (also known as floral emblems) and national birds, but today I will Read More
CultureEssayEtymologyHistoryScienceUncorrected Toru Nov 15, 2015Jan 07, 2024 corundum, impurities, metal ions, ruby, sapphire Ruby and Sapphire Although I’m not conversant with jewelry, I know ruby and sapphire.Basically, rubies are red, and sapphires are blue. ルビーとサファイア However, Read More