מדרש על דברי הימים ב 2:15

Another matter, “palanquin” (Song of Songs 3:9), this is the Temple. “King Solomon made himself” (Song of Songs 3:9), this is certainly Solomon.⁹⁶This is in contrast to previous explanations in the midrash, which interpreted the reference to King Solomon as actually alluding to God. “Of the timber of Lebanon” (Song of Songs 3:9), as it is stated: “We will cut timber from Lebanon” (II Chronicles 2:15). “He made its pillars of silver” (Song of Songs 3:10), as it is stated: “He established the pillars for the hall of the Sanctuary” (I Kings 7:21). “Its cushion of gold” (Song of Songs 3:10), like that which we learned that the entire Temple was plated with gold except for the backs of the doors. Rabbi Yitzḥak said: This baraita that we learned was regarding the second Temple; however, in the first Temple, even the backs of the doors were plated with gold.
We learned: They were seven types of gold in [the Temple]: Fine gold, pure gold, chased gold, beaten gold, glittering gold, refined gold, parvayim gold. Fine gold, in its plain sense, just as it says: “The gold of that land was fine” (Genesis 2:12). Rabbi Yitzḥak said: It is fine when one is in the house and it is fine when one lodges with it accompanying him.⁹⁷Gold is of great value when one is at home and is also very useful to take with when one travels, as a small amount of it is of great value. Pure gold, such that they would place it in a crucible and it would [come out] lacking nothing.⁹⁸There would be no impurities found in the gold were it to be refined. Rabbi Yuda [said] in the name of Rabbi Ami: Solomon placed one thousand gold talents into the fire one thousand times until he rendered it one talent.
Was it not taught: Rabbi Yosei ben Rabbi Yehuda said: It happened that the candelabrum in the Temple was [found to be] one Gordian dinar greater than the candelabrum of the wilderness, and it was placed in the fire eighty times until it lost [this excess weight]? Rather, initially it lost a significant [amount of dross]; after that, it would lose only a minimal amount.
Beaten gold is drawn like wax. Hadrian had the weight of an egg-bulk. Diocletian had the weight of a Gordian dinar.⁹⁹The egg-bulk is significantly larger. The current government has none of it and never had any of it.
Chased gold [sagur] would cause all the goldsmiths to close [soger].¹⁰⁰Gold of such quality was so rare that if someone was selling it, others who were selling gold could not compete. But is it not written: “And seven thousand talents of refined silver, to overlay the walls of the houses” (I Chronicles 29:4)? Was it silver? Was it not gold? Why do they call it silver [kesef]? It is because it would put to shame [makhsif] all the owners of gold, and all the basins, the pots, the shovels, the firepans, the forks, the spoons, and the potot were made from it. Rabbi Yitzḥak of Migdal said: These [potot] are the teeth of keys [ḥafifot]. Rabbi Simai said: It is the cup [pota] under the hinge, to teach you that the Temple was not lacking [for gold] even for insignificant matters.
Glittering [mupaz] gold, Rabbi Patriki, brother of Rabbi Derosa said in the name of Rabbi Abba ben Rabbi Buna: It is like sulfur that is enflamed in fire.¹⁰¹The gold glitters like flames that are jumping [mefazez]. Rabbi Avun said: It is named after the country where it is [mined]; it is from Ufaz [me’ufaz].
Refined gold, the house of Rabbi Yannai and the house of Rabbi Yudan ben Rabbi Shimon, the house of Rabbi Yannai says: It is because they cut it like olives, feed it to ostriches, and it emerges refined. The house of Rabbi Yudan ben Rabbi Shimon says: They conceal it in dung for seven years and it emerges refined.
Parvayim gold, Reish Lakish said: It is red like the blood of a bull [par], and some say that it produces fruits. When Solomon built the Temple, he crafted with it all sorts of trees. When the trees in the field would produce fruit, those [gold trees] in the Temple would produce fruit. The fruit would fall, and they would gather them and set them aside for Temple maintenance. When Menashe placed an idol in the Sanctuary, all those trees dried up. That is what is written: “The flower of Lebanon withers” (Nahum 1:4). However, in the future, the Holy One blessed be He will restore them. That is what is written: “It will blossom and will rejoice, even with joy and song” (Isaiah 35:2). “Its seat of purple wool” (Song of Songs 3:10), just as it says: “He made the curtain of sky-blue, purple, and crimson wool, and fine linen” (II Chronicles 3:14). “Its interior is plated with love” (Song of Songs 3:10), Rabbi Yudan said: This is the merit of the Torah and the merit of the righteous people who study it. Rabbi Azarya said in the name of Rabbi Yehuda in the name of Rabbi Simon: This is the Divine Presence.

An idolater asked Rabban Gamliel, "Why was the Holy One, Blessed be He revealed to Moses in the Burning Bush?" Rabban Gamliel replied to him, "If God had been revealed in a carob tree or a fig tree, you would have asked me the same thing, and I could not send you away without an answer. This teaches you that there is no place in the world devoid of the Shekhinah."