Heat oil in a Dutch oven over medium-high heat. Add onion and garlic; sauté 5 minutes or until tender. Add coriander, paprika, cumin, and turmeric; sauté 2 minutes. Add broth, salt, pepper, and carrots; bring to a boil. Reduce heat, and simmer 30 minutes or until carrots are very tender. Let stand 5 minutes.
Place half of carrot mixture in a blender; cover tightly, and process until smooth. Pour pureed carrot mixture into a large bowl. Repeat procedure with remaining carrot mixture. Place pureed carrot mixture in pan; stir in 1/2 cup cilantro, half-and-half, and honey. Cook over low heat 5 minutes or until thoroughly heated. Combine 1/4 cup cilantro and chives. Sprinkle over soup.