The Diamante citron is a variety of citron named after the town of Diamante, located in the province of Cosenza, Calabria, on the south-western coast of Italy, which is its most known cultivation point. This is why this variety is sometimes called the "Calabria Esrog". "Esrog" is the Ashkenazi Hebrew name for citron.
Diamante citron
A double graft union, one at the stem and one at the branch.
Each tree is inspected for signs of grafting.
The citron, historically cedrate, is a large fragrant citrus fruit with a thick rind. It is said to resemble a 'huge, rough lemon'. It is one of the original citrus fruits from which all other citrus types developed through natural hybrid speciation or artificial hybridization. Though citron cultivars take on a wide variety of physical forms, they are all closely related genetically. It is used in Asian and Mediterranean cuisine, traditional medicines, perfume, and religious rituals and offerings. Hybrids of citrons with other citrus are commercially more prominent, notably lemons and many limes.
Citron
Ancient mosaic of Tiberian Synagogue depicting citrons
Illustration of fingered citron with the leaves and thorns that are common to all varieties of citron
A citron or citron-like hybrid of Italian origin, showing the thick rind