These are gold Akoya pearl titanium earrings. The pearls are sourced from a pearl specialty store in Kobe. The size of the pearls is approximately 6.7-7mm. Please check the actual size in the photos. The earrings are made of titanium for both the posts and the catches. They can be worn by those with allergies. Akoya pearls are very expensive. Especially Tahitian blue and gold Akoya pearls are popular, and their prices are high. We cannot offer any further discounts on this item. Thank you for your understanding and purchase.