Also try Silent Gear! This is required if you want tools or armor.
Silent’s Gems adds 16 new gemstones to the game! These can be used to craft a variety of building blocks (gem blocks, bricks, small bricks, polished gem stones, chiseled gem stones, smooth gem stones, glass, lamps) and other useful items. These gems can also be used to craft tools and armor if Silent Gear is installed.
!Too many blocks
(These are not all the blocks in the mod, but some of the most common)
Silent Lib is required and must be installed. Silent Gear is not required, but recommended for the full experience during gameplay.
!Gems
The 16 gems are split across the three vanilla dimensions and overlap somewhat. Some of the gems found in the Nether and the End can occasionally be found in the overworld.
There is a gem ore block that matches all three dimensions. (You can configure the mod to generate any gem in any dimension, and with whatever frequency you like. You can even disable specific gems from ever generating, if that is what you prefer.)
Each gem fits into a handful of “roles”. Gems are usually stronger in their role’s stats, and equal to other gems of the same dimension in other stats (at least with default ore configs). Every gem still has unique traits.
Some gems are rarer than others. The two diamond variants are also notably strong in all stats, unlike most gems, but are also much harder to find. Having a hammer and prospector hammer from Silent Gear will make the process much easier.
!Gem bag
Gem Bags are nice baggies that collect and store gems as you are mining them (not applicable to ores). This frees up your inventory for more mining opportunities.
Glowroses are light-emitting flowers that spawn naturally throughout the world. Their light is enough to prevent mob spawns just two blocks away (configurable). Glowroses can be planted in vanilla flower pots. Potted glowroses create much more light than freestanding ones.
!Glowroses

Adds many colorful gemstones and building blocks. Compatible with Silent Gear.