A gem means “precious stone” and diadem means crown which symbolizes power and authority.
Isaiah 62:3 NIV version says 3 You will be a crown of splendor in the Lord’s hand,
a royal diadem in the hand of your God.
I Peter 2:9 NIV version says: you are a chosen people, a royal priesthood, a holy nation, God’s special possession, that you may declare the praises of him who called you out of darkness into his wonderful light.
A royal family stands out from regular family. We as people of God should stand out from the people who don’t know God.
We as believers can decree a thing and it will be established just like a king, as long as it is according to the word of God. We have the authority to rule and take control over what is in the earth.
Don’t settle for less, you’re an heiress! Don’t accept anything, you are a king!