Emerald Jewel Melons This page first published: Apr 7, 2004 · Updated: Jun 16, 2018 · by CooksInfo. Copyright © 2021 · This post may contain affiliate links · This blog generates income via ads · In Japan, Emerald Jewel Melons are considered pretty and good enough to buy as gift for someone. They have brown netting on green rind. Inside they have very white, juicy flesh with a very sweet flavour. They range from 3 to 4 pounds (1.4 to 1.8 kg.) They are commercialized by the Sakata seed company of Japan.