> For the complete documentation index, see [llms.txt](https://lightro.gitbook.io/lightro-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://lightro.gitbook.io/lightro-docs/refine-and-grading-system.md).

# Refine & Grading System

### Refine System

In Light RO, the refinement system is designed to allow players to reach maximum potential. We have modified the Blacksmith Blessing (BSB) system so it can be used to protect your gear all the way up to +20.

#### Refine Costs & BSB Requirements

The refinement cost depends on the type and level of the equipment. Please note that Armor Level 1 and 2 follow the same pricing structure as Weapon Levels 3, 4, and 5.

| **Refine Level** | **Armor Lvl 1 & 2 / Weapon Lvl 3, 4, 5 Price** | **Weapon Lvl 1 & 2 Price** | **BSB Amount Required** |
| ---------------- | ---------------------------------------------- | -------------------------- | ----------------------- |
| +8               | 20,000 - 50,000                                | 20,000 - 50,000            | 1 BSB                   |
| +9               | 20,000 - 50,000                                | 20,000 - 50,000            | 2 BSB                   |
| +10              | 20,000 - 50,000                                | 20,000 - 50,000            | 4 BSB                   |
| +11              | 100,000                                        | 100,000                    | 7 BSB                   |
| +12              | 300,000                                        | 300,000                    | 11 BSB                  |
| +13              | 500,000                                        | 300,000 (Stagnant)         | 16 BSB                  |
| +14              | 800,000                                        | 300,000 (Stagnant)         | 22 BSB                  |
| +15              | 1,000,000                                      | 300,000 (Stagnant)         | 45 BSB                  |
| +16              | 2,000,000                                      | 300,000 (Stagnant)         | 61 BSB                  |
| +17              | 3,000,000                                      | 300,000 (Stagnant)         | 79 BSB                  |
| +18              | 4,000,000                                      | 300,000 (Stagnant)         | 104 BSB                 |
| +19              | 5,000,000                                      | 300,000 (Stagnant)         | 129 BSB                 |
| +20              | 6,000,000                                      | 300,000 (Stagnant)         | 165 BSB                 |

### Grading System

Grading is the process of evolving your equipment from Non-Grade to Grade A.

\
Grading Requirements & Success Rates

The following table outlines the requirements for each tier based on the current server balance:

| **Target Grade** | **Material**       | **Zeny Cost** |
| ---------------- | ------------------ | ------------- |
| Grade D          | 1x Etel Aquamarine | 175,000       |
|                  | 5x Etel Aquamarine | 875,000       |
| Grade C          | 1x Etel Topaz      | 525,000       |
|                  | 5x Etel Topaz      | 2,625,000     |
| Grade B          | 1x Etel Amethyst   | 1,575,000     |
|                  | 5x Etel Amethyst   | 7,875,000     |
| Grade A          | 2x Etel Amber      | 4,725,000     |
|                  | 10x Etel Amber     | 23,625,000    |