gomed ko ham angreji ya vaigyanik bhasha men hessonite grossular garnet ke nam se jante hain. hessonite ka nam yunani shabd essonite par para hai. gomed bhure ya halke pile bhure ya kesri bhure rang ka ho sakta hai. kesri bhure rang ya shahad ke rang ki tarah dikhne vala gomed anmol samjha jata hai. dikhne men gomed chamkila evan adhikatar paradarshi hota hai. behtrin kism ke gomed mukhyatah shrilanka men pae jate hain.
bharat men gaya ka gomed kuch kalapan lie rahta hai. brajil, kanada evan amerika men bhi gomed pae jate hain. asli aur nakli gomed: gomed ki tarah dikhne vale kai prakritik ratn upalabdh hain jaise aispessartine garnet, yellow beryl, natural zircon, crysoberyl, sapphire, topaz, citrene quartz (sunaila)e lmasasavu lasanee tatha kampojit ya chipke hue ratn. kyonki uparyukt lagabhag sabhi ratn prakritik hanai islie ek sadharan vyakti ko ye asli pratit hote hain. aie jante hain ki inmen antar kaise kiya jae. 1 microscope : microscope (sukshmadarshi) men kuch khas chijen dekhakar ham gomed ko pahchan sakte hain.
bich aur kampojit ratnon ko ek ratn visheshagya asani se pahchan sakta hai. heat wave effect, jo gomed men svabhavik taur par dekha ja sakta hai, bhi gomed ki ek pahchan hai. ek sukshmadarshi ya 10x lains se gomed ko agar ham dekhen to hamen amtaur par paradarshi dikhne vale is ratn men bhi kuch khas chijen dikhai de sakti hain. gomed men adhikatar golakar thos chijen dikhai deti hain. gomed men hamen andruni taur par kuch-kuch pighle hue taral padarth ki tarah chijen dikhai deti hain jinhen ham angreji men heat wave effect ke nam se jante hain. yah jaruri nahin hai
ki har gomed men hamen aisi antrik chijen dikhai den. achchi kism ke gomed evan aparadarshi gomed men ham ye chijen nahin dekh sakte. ek aur khas bat jo hamen nahin bhulni chahie, yah hai ki kanch aur kampojit (chipke hue) ratnon men bhi hamen aisi golakar samantar chijen dikhai de sakti hai n. ye golakar chijen hava ke bulbule hote hain jo ki inhen banate samay inke andar kaid ho jate hain. ek sadharan vyakti ke lie hava ke asli tatha nakli golakar bulbulon ki pahchan karna atyant jatil karya hai. inhen kuch khas yantron ke dvara pahchana ja sakta hai.
yahi nahin, gomed evan dusre prakritik ratnon men antar bhi yantron/madhyamon ke dvara bari hi asani se kiya ja sakta hai. kyonki yantra har am insan nahin kharid sakta tatha paryapt gyan n hone ke karan inse koi nishkarsh nahin nikal sakta islie inka ratn prayogshala men parikshan karvana thik rahta hai jahan ratn visheshagya apne gyan evan anubhav ke adhar par asli aur nakli ratnon ki pahchan asani se kar sakta hai.
aie jante hain kaise. ratn prayogshala men istemal hone vale kuch khas yantra ya madhyam nimnalikhit hai n. 2 refractometer : refractometer se ham kisi ratn ki prakash ko morne ki kshamata ko ek mapak par mapte, ankte hain. har ratn ki apni ek nirdharit shakti hoti hai jo ankon men batai ja sakti hai jaise ki gomed ki tmatinbjpam pdakamag ;tpddh 1.73-1.76 tak hoti hai. jo bhi tp hamen mapak par dikhti hai usse ham yah dekhte hain ki yah tp kis ratn ki ho sakti hai.
parantu kanch aur kampojit ratn bhi yahi tp dikha sakte hain islie ratn visheshagya kai parikshanon ke bad hi kisi nishkarsh par ate hain. 3n aichmbppib latanapajal ;ailaddh is prakriya men ham kisi ratn ki ail ko ek khas taral padarth (jiski ail hamen pahle se gyat hoti hai) men dalakar ankte hain. is tarah ham yah nishchit kar sakte hain ki yah ratn kaun sa hai.
hava evan pani men vajan karke bhi ham kisi ratn ki sahi ail map sakte hain tatha yah gyat kar sakte hain ki amuk ratn kaun sa hai. gomed ki ail 3n4 latanudhbnaipab bu se 3n78 latanudhbnaipab bu tak hoti hai. kuch ratn aipadahasal tamtinbjpam ;aitddh tatha kuch kvanaisal tmatinbjpam ;ktddh hote hain. chvasantpebavacham ye ait tatha kt ke svabhavik chnjjmtde ko dekhakar ham yah bata sakte hain ki vah ratn kaun sa ho sakta hai.
gomed ait hota hai tatha thamatalarsae patbvdae jvachanrae btalevaimatalas kt hote hain. hamen yah nahin bhulna chahie ki glas aichmeentajapadam hantadamaj aur kampojit ait bhi hote hain. 5n kpabitvebavacham ru kpabitvebavacham se ait ratnon men dikhne vale ek hi rang evan kt ratnon men dikhne vale do ya tin rangon ko dekhakar pahchana ja sakta hai.
iska arth yah hai ki gomed men har disha men ek hi rang dikhaega tatha sunaila) do tatha aur tin rang dikhaenge. not: yah sanbhav nahin hai ki do bhinn ratn har yantra ya madhyam men ek hi parinam dikhaen. islie ratn visheshagya samanantar parinam dikhane vale ratnon ko kisi n kisi yantra ya madhyam se janch lete hain.