> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.sayduck.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Transparency

Transparency in 3D refers to an object's ability to allow light to pass through it, creating a see-through effect. It is achieved by adjusting an object's opacity level or **Alpha value**, or using material extension **Transmission**. 

### Alpha value

Alpha value is a simple opacity parameter that can be used to make a material partially or completely transparent. It does not take into account the way that light interacts with the material.

To change **Alpha value**, open the **RGBA color picker** and change the highlighted value. 

![](https://storage.crisp.chat/users/helpdesk/website/cae6f284ce714800/screenshot-2023-04-25-at-13021_2l2ksh.png)

######  Use Texture Transparency (PNG)

To enable opacity in transparent textures (png), toggle **Use Texture Transparency**. 

| Texture format png is a lot heavier than jpg so using them might add extra data to your product 

![](https://storage.crisp.chat/users/helpdesk/website/cae6f284ce714800/screenshot-2023-04-25-at-14553_1word3t.png)

### Transmission

Allows for more realistic rendering of translucent or transparent materials by specifying the amount of light that can pass through them.

|| Not supported in Augmented reality

![](https://storage.crisp.chat/users/helpdesk/website/cae6f284ce714800/screenshot-2023-04-25-at-14535_1bv1oaf.png)

###### Index of refraction (IOR)

Index of refraction refers to how much a material bends or slows down light as it passes through it. 

* Air: 1
* Water: 1.33
* Glass: 1.5, 
* Diamond: 2.42

###### Volume

Used to simulate the appearance of a finite volume of a material, which includes its thickness and other properties such as refraction, absorption, and scattering.

For example, it can be used to simulate thickness on glass objects, such as a vase or a bottle.

![](https://storage.crisp.chat/users/helpdesk/website/cae6f284ce714800/image1d3w2jz_mzqlyr.png)