Online wholesale stores and retail stores featuring computer software used to evaluate the optical performance of facetted gemstones and optical magnification instruments

'comput':8 'evalu':12 'facet':17 'featur':7 'gemston':18 'instrument':22 'magnif':21 'onlin':1 'optic':14,20 'perform':15 'retail':5 'softwar':9 'store':3,6 'use':10 'wholesal':2

Optical magnification instruments, namely, for using the angular spectrum to measure and evaluate the optical performance of facetted gemstones

'angular':8 'evalu':13 'facet':18 'gemston':19 'instrument':3 'magnif':2 'measur':11 'name':4 'optic':1,15 'perform':16 'spectrum':9 'use':6

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