We provide two options following: 
option 1: circular shaped natural black agate 
option 2: circular shaped natural black agate with diamond-shaped patterns
*****Black agate is known for its grounding and protective properties, and wearing this bangle can help promote stability and inner peace. Whether you're dressing up for a special occasion or looking for an everyday accessory, this black agate bangle is a versatile piece that will add a touch of refinement to your style. 
*****A black agate bangle with diamond-shaped patterns is a stunning piece of jewelry that combines the natural beauty of agate with intricate geometric design. These patterns may be simple and symmetrical or more complex and asymmetrical, with intricate details that showcase the skill of the artisan who created it. The diamond-shaped patterns on the black agate bangle add texture and depth to the overall design, creating a striking contrast against the smooth, polished surface of the stone. The deep, rich color of the  black agate complements the geometric shapes, resulting in a bold and eye-catching piece of jewelry that is perfect for any occasion.

The QUALITY OF STONE is excellent. Stone is perfectly polished, very smooth. There are absolutely no scratches or nicks. The BRACELET is pleasant to wear on wrist and to the touch. 
The stones were not treated in any way. NOT colored. NOT toned
Stone was just crafted into certain shape, other then that it is exactly as Mother-Nature created it.

PLEASE, NOTE: This is a HARD BANGLE bracelet. Bracelet DOES NOT STRETCH. Bracelet DOES NOT ADJUST SIZE. 

How to measure and choose the right one ? 
WIDTH OF PALM is important while choosing the right size of HARD BANGLE bracelet. Width of palm MUST match or be lesser than bracelet's inner diameter. Please, REFER TO the photo (last photo after item photos) for a recommendation on how to measure your wrist size.