Stroke count: 10
Meaning: jade scepter or tablet (authority symbol)
Kunyomi: たま
Onyomi: ケイ
Composition: 王 圭
Radical: 玉
Meaning: jade (king)
ケイ化 (ケイカ) silicification
珪灰石 (ケイカイセキ) wollastonite