Choice of sold 10k or 14k yellow goldComes on a lightweight 0.5mm width 15 inch long chain with spring ring closure and prepared in necklace box.All stones are 3mm round and are natural/genuine: January - Genuine Mozambique Garnet February - Genuine AmethystMarch - Genuine AquamarineApril - Genuine White Zircon May - Genuine EmeraldJune - Genuine Rhodolite GarnetJuly - Genuine RubyAugust - Genuine Peridot September - Genuine Blue Sapphire October - Genuine OpalNovember - Genuine CitrineDecember - Genuine Blue Zircon10k Gold vs 14k Gold:14k gold is higher in price and gold purity. 10k gold is a bit more durable since it is blended with more alloy, less gold. Please note that this is a very fragile and petite necklace. It is intended for children but we cannot be held responsible if a child bends or breaks it.