Our ruby necklace is handmade with a 10x5mm marquise cut ruby gemstone set in sterling silver. Stones are lab grown with a fuchsia-red sparkling color and set into our sterling silver setting with an open back. The pendant hangs from our dainty box chain that closes with a lobster clasp. Perfect for gift giving for someone with a July birthday. About Ruby: Ruby is in the corundum family of gemstones. The red color comes from chromium deposits in the stone. The difference between a natural and a synthetic ruby gemstone is that a genuine ruby will typically have inclusions, whereas a synthetic ruby will be eye clean. The largest sources of ruby come from Thailand, Sri Lanka, Burma and Tanzania. Materials: Ruby lab grown gemstone 10x5mm marquise cut 925 sterling silver box chain and pendant setting If you have any questions just click "message seller" on our homepage. Thank you for visiting our jewelry shop, Linda and Joe .