Deep rich green and gold match beautifully while the gemstone sparkle when the light hits them. The necklace would make a lovely gift for a wife, Mum or a friend. Agate is a stone of strength. It enhances creativity and strengthens the intellect, making it a beneficial stone for both students and artists. As a stone of harmony, one of the things it does is balance yin/yang energy. Emotionally, it gives courage, emotional strength, self confidence and dispels fears. Vermeil is produced by coating sterling silver with carat gold. Gold is usually 18k or pure 24k gold. To be considered vermeil, the gold must be a least 10k and have a minimum gold thickness of 2.5 microns on all surfaces. The term gold filled means that a think layer of gold is bonded to a base of other alloys. The gold layer on gold is approximately 100 times thicker than gold plated.