Green aventurine, high quality citrine, clear quartz, and hematite.
When used together, these crystals are believed to create a synergistic effect, enhancing their individual properties and working together to support: 
Attracting abundance and prosperity while staying grounded and protected. 
Boosting manifestation abilities by amplifying intentions and clearing obstacles. 
Achieving emotional balance, releasing negativity, and promoting healing. 
Enhancing mental clarity, focus, and decision-making. 
Creating a powerful and harmonious energy field that supports overall well-being. 
This combination is thought to create a balanced and empowering energy field that promotes abundance, clarity, grounding, and protection, supporting personal growth and manifestation goals. 
This one is 18.5 cm but can be made to fit your sizing needs.