Gomed/Hessonite gemstone is also referred to as Gomedh, Gomedhak,Raju ratna. 'Gomedh' is a sanskrit word which means of color of the cow urine.Gomed is basically worn to get rid of ill effects of rahu in horoscope.The bad effect of Rahu are mental conflicts,anger and obstacles in work, troubles from enemies, and disputes in the court.
Hessonite Garnet (Gomed) is the stone of planet "RAHU", the dragon's head. In Indian astrology, RAHU is said to be a shadow planet.He is the son of "SINHIKA" the daughter of "HIRNYAKASHYAPU".

Astrological Benefits :-

As per Hindu mythology, at the time of "SAAGAR MANTHAN", the devil "RAHU" managed to drink the immortal fluid "AMRIT" along with holy angels "DEVTAS". Lord Vishnu became angry and cut his head using his "SUDARSHAN CHAKRA".But as RAHU managed to drink "AMRIT", he could not die.As the result the head and the trunk of his body were still alive. Afterwards, these two parts of his body became the shadow planet by the name of "RAHU" & "KETU".

Business & Professions related to Rahu
The powerful presence of "RAHU" in the horoscope blesses the native with a gain and fame in the business of Iron ore, poisonous products, leather, cement, mustard seeds, mustard oils, woolen clothes, blankets, rotten goods, vegetables, sharp piercing, foreign exchange, photography, astrology,ammunition,horse and camel trade,commission agents, lottery, circs, wine and smokes, rubber etc.
Diseases Related to Rahu
"RAHU" may be behind the diseases like poisonous diseases, non-diagnosable diseases, leprosy, black de-coloring eye disease, skin diseases, sleeplessness, abdominal and stomach related diseases, mental illness, itching, ulcer, blood diseases etc.
If the position of "RAHU" is in favor, the native will be enjoying a great intellectual power, the life fill with all luxuries, servants, cars and comforts.