Gemologists compendium

 

J.H. Steward, London
Set of different instruments in glass fronted wooden cabinet (lacquered black, 30.2 x 22.6 x 13.2 cm). The items include: microscope (lacquered and black lacquered brass, height 27 cm) signed on the base "J.H. STEWARD. LONDON." with two specimen holders; bull's eye condenser lens (lacquered brass); tweezers; refractometer (lacquered and black lacquered brass, 7.8 x 4.2 cm), signed "J.H. STEWARD | LONDON" and numbered "267"; dichroscope (lacquered and black lacquered brass, tube length 6.4 cm, diameter 1.1 cm), signed "J.H. STEWARD | LONDON"; separate compartment with mahogany box with glass bottles containing heavy liquids (methylene iodide etc.); stone tester (three hardness points and gauge, nickel plated brass), with instruction leaflet (12.8 x 7.3 cm).
First half 20th century.

private collection

Gemologists compendium, J.H. Steward, London

Gemologists compendium, J.H. Steward, London
microscope and bull's eye condenser lens

Gemologists compendium, J.H. Steward, London
refractometer and dichroscope

Gemologists compendium, J.H. Steward, London
set with heavy liquids

Gemologists compendium, J.H. Steward, London

Gemologists compendium, J.H. Steward, London
instruction leaflet for "Handy Stone Gauge & Tester"

Gemologists compendium, J.H. Steward, London
"Handy Stone Gauge & Tester"