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.
Called the Heart Stone, Rose Quartz may have been used as a love token as early as 600 B.C. and is still an important talisman of relationships. It is quite effective in attracting new love, romance and intimacy, or in developing a closer bond with family or friends.