Grand Prix horse for sale. If you are thinking Gold medal Diamont is well trained to get you there. Suitable for a Adult Amateur rider. As well as for a Junior with later potential to move on to under 25 Grand Prix, or a young professional that wants to go all the way - he has scores in the mid to high 60% at Grand Prix this year. Priced at $150,000. Located in Columbus, NC about 7 miles from The Tryon International Equestrian Center.