Jewelry Shop sea urchin ring with blue topaz Previousring "twig", sterling silver and 14kt gold with pink sapphire Nextring "octopus's garden", 14kt gold sea urchin ring with blue topaz sea urchin ring with blue topaz $490.00 sterling silver ring in sea urchin design with faceted round blue topaz. for mermaids and other princesses! size 7 1/2 (55,5). can be slightly upsized. Add To Cart