Handmade Resin oval cabochon 25mm 25mm resin cabochon with flat back £2.50 Quantity: at £2.50 each Add To Basket Sparkling blue handmade oval resin 25mm cabochon. The cabochon has a lapis lazuli look to it. Size 25mm long by 18mm widest.Ideal for bead embroidery projects and for wire working or simply glue a bail on the back to make into an instant pendant.How is it made? I have used gede resin mixed with coloured pigments and sparkle, that are left to set in a cabochon mould for 24 hours. What is a cabochon? A cabochon is a bead without any holes that has a flat back and an oval surface at the front.