Diamond Exchange Houston has this 18K Marquise Diamond Engagement Ring available for only $1400. This ring can be resized to fit any finger. We only have 1 ring like this available so get it while it lasts. If you are interested in purchasing this engagement ring or would like to see this in person then please fill out our contact form to schedule an appointment or call us today at 281-623-1105. Diamond Exchange Houston has a large selection of wholesale diamonds and engagement rings.