navagrahon ke ratn surya: manik/uparatna- lalron, tamra, tamramni. chandrama: moti/uparatna- chandrakant, muktashukti, suryashm. mangl: munga/uparatna-prabalmul, rata, lal hakik. budh: panna/uparatn - vairuj, maragaj. guru: pukhraj/uparatna- sunaila, keru, dhiya, sonal. shukra: hira/uparatn - upau, pantla, kansla, vikrant. shani: nilm/uparatn - nili, kataila, jamuniyan. rahu: gomed/uparatna-tursava, safi. ketu: lahsuniya/uparatna-alakshendra, godanti, karketka. ratnon men kamobesh vidyut-shakti maujud rahti hai
jiska abhas aur anubhav vibhinn prakar se kiya ja sakta hai- kuch ratnon ko dabav ke dvara, kuch ko gharshan ke dvara aur kuch ko tap ke sanpark men ane par. is adhar par ratn tin vargon men bante ja sakte hain:
(ka) tap vidyut: jo ratn tap ke sanpark men akar vidyut-mat ho jate hain unhen tap-vidyut vale ratnon men ganna ki jati hai. lekin ratnon men vah tap tabhi vidyut utpann kar pata hai jab tap samanya se kuch adhik ho. shobhamni aur sfatik ki ganna aise hi ratnon men ki jati hai.
(kha) dab vidyut: kuch ratnon ka nirman aise tatvon se hota hai ki un par dabav parne par ratnon men vidyut pravah utpann ho jate hain. aise ratnon ka ek sira (-) rin vyakt karta hai aur iska dusra sira ($) dhan vyakt karta hai. dabav rahte hi ye apni samajik sthiti men a jate hain. manibh aise ratnon ki shreni men ate hain.
(ga) gharshana vidyut: kuch aise ratn hain jinhen suti ya uni kapre se ragrne par us ratn men vidyut shakti utpann ho jati hai. ragrne ke turant bad gaur se dekhne par pata chalega ki ratn se chingariyan nikal rahi hain. kahrva, pukhraj, hira aise hi ratnon ki shreni men ate hain. iske atirikt ratn tap ki drishti se kuchalak aur suchalak bhi hote hain. aise ratn ko jo tap ke suchalak heate hain, sparsh karne par shitlta ka anubhav hota hai.
dusra kuchalak ratn vah hai jinhen sparsh karne par garmi ki anubhuti hoti hai. yah bhautik vigyan par jancha parkha gaya tathya hai. hira tap ka suchalak hai to pukhraj, munga tap ke kuchalak hain. ratnon ke dharan men savdhani bhi bartne ki jarurat hai. vibhinn ratnon men ek dusre ke prati mitradi ka bhav bhi grah svamitva ke adhar par hota hai. atah viprit gun dharm vale ratn ek sath pahnne ki manahi hai.
fir bhi kisi paristhiti vishesh men aisa karna anivarya ho to uchit soch-vichar ke bad alag - alag hathon men dharan karne ki salah di jati hai. aise ratnon ki talika pichle prishth par sanlagn hai. grahon ke dosh dur karne aur shubh grah ke prabhav ko barhane ke lie ratnon ka prayog achuk prabhav rakhta hai. ratn pahnne se pahle kundli men grahon ki sthiti adi ka vichar vidvan jyotishi se kara lena chahie. grah ratn ko vaise to us grah ke var ko samanyatah dharan kiya jata hai parantu us din anya ashubh samy-yog n ho.
grah ke ratnon ki pran-pratishtha karke dharan karne se uski prabhav kshamata dvigunit ho jati hai. ratn dosh rahit ho aur nakli n hon. ajakal mahange- ratnon men nakli ratnon ki visheshtah bharmar hai. aise ratnon ke dharan karne se jatak ko koi labh nahin hota hai. sanshlisht, yaugik tatha kanch aur plastik ke bane ratn jaise dikhne vale chijen bhi bajar men milti hain. sandosh ratn bhi dharan karne se labh ke badle hani hoti hai.