This report outlines the specifications for the Lustery E1160 Crystal Chandelier
You may be referring to the "Squid" tool or method used to test the refractive index or specific gravity of stones (less likely for hobbyists), OR a specific design called the "Squid" by a designer like Shallan that utilizes the E1160 crystal for a specific lustery e1160 crystal and shaldon work and squi best
This report outlines the specifications for the Lustery E1160 Crystal Chandelier
You may be referring to the "Squid" tool or method used to test the refractive index or specific gravity of stones (less likely for hobbyists), OR a specific design called the "Squid" by a designer like Shallan that utilizes the E1160 crystal for a specific