Natural Stone Design Bracelet Men's 17cm This bracelet uses 6mm and 8mm crack citrine and 4mm onyx. 【Citrine】 Citrine is a type of quartz, ranging in color from transparent pale yellow to brownish orange. Japanese name: 黄水晶 (Kizuisyou - Yellow Crystal) Origin of the name: From the French word "citron" (lemon) due to its similar color. Color: Ranges from bright yellow to golden yellow and reddish orange. Mohs hardness: 7 (A relatively durable and easy-to-handle gemstone). Birthstone: November birthstone. Stone meanings: "Prosperity," "Success," "Wealth," "Happiness," "Hope," "Sociability," "Confidence," etc. It is also popular as a power stone symbolizing financial luck and business prosperity. 【Onyx】 A jet-black gemstone (a type of banded agate) known as a "stone of protection." Japanese name: 黒瑪瑙 (Kuromenou - Black Agate) Origin of the name: Derived from the Greek word "ὄνυξ" (onyx), meaning "nail." This is said to be because the striped pattern of the flesh-colored and white parts resembled a fingernail. It is also the origin of the English word "nail." Color: Black (jet black). Currently, when "onyx" is used in the market, it most often refers to this color. Mohs hardness: Approximately 6.5 to 7 Stone meanings: Protection from evil, warding off bad luck, dispelling negative energy, success, marital happiness / marital harmony, perseverance, calmness / concentration, achieving goals, bringing out talent