I recently moved to okc from Texas. I know there's some interoperability, and that Toll Tags are accepted. However, I have a TxTag, similar to a toll tag, but put out by TxDot.
Topaz is commonly used for Friendship Rings and it is nicknamed 'the gem of friendship'. Topaz is considered in some cultures to be the ultimate representation of friendship and fidelity.
Friendship for most people is a combination of affection, loyalty, love, respect, and trust. The general traits of a friendship include similar interests, mutual respect and an attachment to each other, and in order to experience friendship, you need to have true friends.