These glasses with vibrant geometric patterns inside will blow your mind

Jes Durfee - an glass artist shares some of his incredible works on Instagram, and they look super cool. I wonder how could he put these vibrant geometric patterns inside those glasses. Below are some of the most liked works.

#1

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A post shared by jesdurfee (@jesdurfee) on Jun 8, 2019 at 8:52am PDT

#2

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A post shared by jesdurfee (@jesdurfee) on Jun 21, 2019 at 9:18am PDT

#3

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A post shared by jesdurfee (@jesdurfee) on Nov 7, 2019 at 9:08am PST

#4

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A post shared by jesdurfee (@jesdurfee) on Mar 22, 2019 at 7:09pm PDT

#5

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A post shared by jesdurfee (@jesdurfee) on Jul 17, 2018 at 7:41am PDT