BlockDAG (BDAG) is a top crypto gem to buy now due to its unique blockchain system and growing global partnerships.Stellar (XLM) offers low-cost transfers and has shown stable growth over the years.XRP is a key player in real-world banking, enabling fast and cost-effective cross-border money transfers.Avalanche (AVAX) is a fast platform for smart contracts and has the potential for significant growth in DeFi and NFT spaces.