觀無量壽佛經疏 3.24

3.24

二、從下有金剛七寶下，至不可具見已來，正明地下莊嚴。即有其七。一明幢體等是無漏金剛。二明擎地相顯映莊嚴。三明方楞具足表非圓相。四明百寶合成量出塵沙。五明寶出千光，光周無邊之際。六明光多異色，色照他方，隨機變現，無時不益也。七明眾光散彩，映絕日輪，新往者覩之卒難周悉。

Two, from 'Below there are diamond and seven jewels' down to 'cannot be seen completely', directly explains the subterranean adornments. There are seven [points]: First, it explains that the banner bodies and so forth are uncontaminated diamond. Second, it explains that the marks supporting the ground are displayed and adorned with mutual radiance. Third, it explains that they possess square edges, signifying that they are not round. Fourth, it explains that they are formed of a hundred jewels, their measure exceeding the sands of dust. Fifth, it explains that the jewels emit a thousand rays of light, the radiance encompassing the boundless horizons. Sixth, it explains that the light has many different colors, which illuminate other directions and manifest according to faculties, benefiting at all times. Seventh, it explains that the myriad lights scatter brilliant hues, surpassing the sun disk, so that those newly reborn there can hardly comprehend them all at once upon beholding them.