This is our Blue Diamond Garden Center page. We have listed the full address of Blue Diamond, phone numbers and websites. Blue Diamond is in Spalding. Blue Diamond sells gardening and lawn care supplies, garden tools and equipment, garden furniture, water gardens and garden accessories in Spalding. You�ll find everything from plants, shrubs and trees to soil and gardening tools. All the supplies you�ll need to build your garden. This Garden Center is in Spalding.