Tolkien purposefully invokes connections between Revelation and Lothlórien with not only his descriptions of Lothlórien but also with the symbolic and contextual evidence he provides about the haven of elves in Middle Earth.
“And the building of the wall of it was of jasper; and the city was pure gold, like unto clear glass. And the foundations of the wall of the city were garnished with all manner of precious stones. the first foundation was jasper; the second, sapphire; the third, a chalcedony; the fourth, an emerald; the fifth, sardonyx; the sixth; sardius; the seventh, chrysolyte; the eighth, beryl; the ninth, a topaz; the tenth, a chrysoprasus; the eleventh, a jacinth; the twelfth, an amethyst. And the twelve gates were twelve pearls: every several gate was of one pearl: and the street of the city was pure gold, as it were transparent glass. “
When describing Lothlórien Tolkien repeatedly describes it as golden, “That is the fairest of all the dwellings of my people. there are no trees like the threes of that land. For in the autumn their leaves fall not, but turn to gold. not till the spring and the new green opens do they fall, and then the boughs are laden with yellow flowers; and the floor of the wood is golden, and golden is the roof, and its pillars are of silver, for the bark of the trees is smooth and grey.”--Legolas. This description of Lothlórien has many jewel images which are illusions to Revelation. The floor of the wood being golden in particular echos, “and the street of the city was pure gold” from Revelation 21:21. The leaves of the trees when not are golden they are green, much like emeralds and/or chrysolytes that are mentioned in Revelation 21 and the yellow flowers could potentially share the color of a topaz stone. And you could even go as far as saying that the silver grey tree bark could be almost pearly in nature (this is a bit of a stretch though). Many rivers run through Lothlórien including Nimrodel, Anduin, and Silverlode which invokes the imagery of the sapphire and even topaz, if in it’s blue form, from Revelation 21.
Not only is there said physical connections between jewels, Lothlórien, and the concept of it being heaven there are bigger connections. One of the biggest being that there are two places in Arda known as Lórien (shortened version of Lothlórien even though as Treebeard reveals in book III Lothlórien is shortened from an even longer name). Other than the Lothlórien that the fellowship encounters and where Galadriel and Celeborn rule there is a Lórien in Valinor. The Lórien in Valinor is not only by the same name it has similar characteristics being that the Lórien in Valinor is the Garden of Imo the Valar. Gardens and Forests share innate distinctions as being places of natural beauty and havens from the outer world.
In Medieval thought Jewels had a special power, they were thought to be bits of life contained within the stone and with the second coming of Christ those lives would be resurrected. This further demonstrates the power of Lothlórien. For if the forest is more than just a forest, if it’s actually little bits of a soul contained within the trees and the gold it would increase the power of not only the forest but of Galadriel herself. Lothlórien itself isn’t immune to change, what has protected it from the shadow of evil that has been inflicting the whole of Middle Earth has been Galadriel’s ring of power. Galadriel’s ring of power is “Nenya”, and has a “white stone” perhaps a diamond. The fact that Lothlórien not only seemingly contains jewels it’s physical description but is also protected by a ring with a jewel further speaks to the power of the jewels in the Lord of the Rings legendarium.
Like Jewels, Lothlórien, seem to withstand the test of time and is naturally occurring. Jewels are from the ground, from the inner core of the earth. A piece of carbon that is polished and made into a beautiful thing. Lothlórien is a forest just like any other in Middle Earth that has been groomed and maintained to be something beautiful. Jewels can withstand quite a bit, they are used on crowns and shields and diamonds are one of strongest materials available. Not only do they last, are multi-purpose, but they also remain beautiful through the test of time. Jewelry that was made in the Medieval era, while it may not fit our aesthetic tastes, the jewels still shine brightly. This is much like Lothlórien, from a different era, a different world but yet it’s beauty and magnificence has lasted the test of time. Withstanding change and evil, remaining a beautiful and mysterious haven.
It is said that Lothlórien is the fairest part of Middle Earth. That combined with its connection to the location to the gardens on Valinor, its ethereal quality, it’s eerie and almost unnatural ability to withstand time, and jewel imagery that illudes to Revelation 21 Tolkien uses points to this being a supernatural location within the very natural world of Arda. It’s almost as though Lothlórien is a portal to Valinor, to the world that was inhabited by the Valar. Tolkien views Lothlórien as a ‘heaven on earth’ concept, or even like a cathedral of Middle Earth. It’s the connection between the inhabitants of Middle Earth and not only the Valar, but to Eru himself.