Crystals for red, orange and yellow

[Black Dragon]

Yeah I'd second the clear quartz. You'll definitely want at least one piece of clear quartz. Good for almost anything and amplifies and works well with any other stone. Amethyst is certainly a good option for higher chakras, calming, sleep, and whole a lot more. Jasper and Chalcedony are members of the quartz family but a less tight crystal structure, usually a bit gentler but a really steady energy. Those come in as many color combos and patterns as you can imagine and most are inexpensive and easy to work with.