-no plugins/modifiers, etc.
-model fully UVs unwrapped
-diffuse texture size: 8192x8192
-the model was made in real size
-scene units measurement: millimeters
-dimensions: 45.1 H x 22.2 W x 2.2 D (cm)

https://www.wayfair.com/decor-pillows/pdp/rosecliff-heights-corradina-natural-seashell-mosaic-2-piece-framed-wall-decor-set-w111095604.html 

The mosaic panel in the form of seashells in neutral color is made of real sea glass, white linen background, handmade.

You can find even more high-quality models in my profile:
https://3dsky.org/users/TypicCube