It is certainly safe to wear or carry these crystals all at the same time, as long as you feel comfortable with all of them.
 
You do have a variety of energies with these crystals and some will keep you grounded while others will offer insights and energy from higher planes.
 
There are 9 different stones to enhance your love life, success, health, family relations, friendship and self protection.
 
The stones and definition;
🔮 Clear Quartz - master of healing
🔮 Orange Calcite - aura cleansing
🔮 Jade - Success and wealth
🔮 Sodalite - increase positive energy
🔮 Black Obsidian - increase self-esteem
🔮 Carnelian - increase motivation
🔮 Aventurine - perseverance
🔮 Amethyst - Higher spirituality
🔮 Rose Quartz - Unconditional love