Talmud su Ezechiele 10:1

We have stated in the name of Rebbi Meïr: It does not say “you shall see it”¹⁴⁷In Rabbinic Hebrew, ציצית is clearly feminine, plural ציציוֹת. Rebbi Meïr notes that the verb referring to ציצית in this verse is in the masculine form. Usually, this is taken to mean that in Biblical Hebrew, ציצית is masculine (parallel to masculine קֹהֶלֶת “the preacher”); but many dictionaries of Biblical Hebrew refrain from assigning a gender to the word. Rebbi Meïr votes for taking ציצית as feminine; hence the suffix in “and you shall see” cannot refer to the tzitzit. but “you shall see Him”. This tells you that anyone who keeps the obligation of tzitzit is as if he were admitted to the presence of God’s glory. This tells that tĕkhelet is similar to the sea. But the sea is similar to grasses, grasses are similar to the sky, the sky is similar to the Throne of Glory, and the Throne is similar to sapphire¹⁴⁸The extended list is found only here; the other sources (quoted in the discussion of תכלת) only have the comparison of sea and sky.
The Gaon of Wilna has noted that the last two items in the list are in inverted order; one should read: the sky is similar to sapphire, sapphire is similar to the Throne of Glory. We are interested in connecting tĕkhēlet to the Throne of Glory, and the verse from Ezechiel provides the characterization as similar to sapphire., as it is written (Ez. 10:1): “I saw, and here by the spread that was on top of the Cherubim like sapphire stone, the looks of the form of the Throne.”