neelam

neelam
Sapphire01.jpg
saamaanya
varg khanij vividh
raasaayanik sootr alyoominiym bhasm, Al2O3
pehchaan
varn laal ke sivaaya harek rang (laal maanikya hai)
kristal haibit bhaari evam grainyoolar
kristal pranaali traaigonal
kleevej naheen
fracture kaunkauedal, splintari
mohj skel sakhtata 9.0
chamak kaaainchamaya
rifraiktiv index 1.762-1.778
optikl gun Abbe number 72.2
pleokroijm prabal
streek shvet
spaisifik graiviti 3.95-4.03
fyoojibiliti inafyoojibal
ghulanasheelata aghulanasheel
anya lakshan taapeeya prasaar ka gunaank 5e-6–6.6e-6/K

neelam ek ratn shreni ka khanij hai. yeh alyoominiym bhasm (oksaaid) (Al2O3) hai, jab yeh laal ke sivaaya anya varn ka hota hai. neelam prakruti mein bhi milta hai, evam krutrim bhi banaaya jaata hai. apni ullekhaneeya sakhtata ke kaaran kai anuprayogon mein prayukt hota hai, jaise adhorakt drushti sambandhi upakaran, ghadee ke kristal, ardhachaalakon ki diposeeshan hetu jaise ki GaN nanorods.

anukram

praakrutik neelam

neela neelam

yeh 422.99-kairet ka logaan saifaayar hai, jo Washington di si ke raashtreeya praakrutik itihaas sangrahaalaya mein surakshit hai. yeh vishv ka sarvaadhik badaa taraasha hua neela neelam hai.

sundar varn ke neelam

barn badalta neelam

varn badalta neelam baahari prakaash mein neela dikhta hai aur balb ki prakaash mein parpal dikhta hai. yeh din ke prakaash mein gulaabi (rang) ka evam pratideept prakaash mein hareetima ke sang dikhaai deta hai.

sitaara neelam

182 kairet (36.4 g) ka Mumbai ka sitaara, Washington ke sangrahaalaya mein rakha hai.

upachaar

Khan

krutrim neelam

chitr:Labstarsapphirering.JPG
rajat mudrika mein ek sitaara neelam

aitihaasik evam saanskrutik sandarbh

  • neela neelam shani grah se sambandhit hai (Wojtilla, 1973), peela neelam bruhaspati se vaidik jyotishshaastr ke anusaar. ise sanskrut mein shanipriya bhi kehte hain, jise bauddh bhikshu madhya Asia le gaye thejo bigad kar shanipriya se sapir evam saipahaaer ya saifaayar ban gaya.

sandarbh

saaaincha:Jewellery Materials