Yes, dried flowers and crystals can be used in Candles. However, at all times the wick must be the only combustible item in the candle. If the flowers and/or crystals become combustible then this is not an acceptable risk to our Insurers.
This is why it is important that you ensure you batch-test your products consistently so that you ensure your products are safe for consumers.
Before your product reaches the Australian consumer market, it is vital for you to ensure that your products meet the level of safety generally expected by Australian consumers. You must also ensure not to make, buy or sell banned products and that all products meet the requirements of relevant mandatory safety standards.