I'm in Houston, Texas and were looking for green conflict free ring for my fiancee and found two local companies in Texas. Green Karat and Green ORO, i went to their respective websites i.e http://www.greenkarat.com and http://www.greenoro.com. I found the prices on Green ORO much more reasonable then Green Karat. I save over $ 500 by buying from Green ORO as they are the direct manufacturers of Green Jewelry.

Few things i found and personally visited:

Pros and Cons:
Green Karat
1) Pros:
Been in business and internet for long years
Cons:
1) Higher Prices
2) No In house retail showroom or store
3) Green Karat ETA time is much more then Green ORO
4) Don't offer high end created diamond settings or jewelry repairs
5) No Physical Location to visit , everything is Online
Green ORO:
Pros:
1) Reasonable and Cheaper Prices then Green Karat
2) Direct Manufacturer and willing to work with you on Custom Jewelry
3) Repairs are much faster on all green jewelry
4) no outsourcing to any middle man , everything is done within their showroom and have work labs
5) ORO Certificate of Authenticity to Back 100% recycled gold and process.
6) One Tree & One Ring at a Time - i really love this concept as they will put one tree towards the purchase i made. Highly impressed with their unique concept.
7) ETA is much less then Green Karat
8) You can visit their physical Location and Showroom and can see the Green Process