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单词 trap-cut
释义

trap-cutn.

Etymology: apparently < Dutch trap step, stair + cut n.2
A mode of cutting gems, chiefly used with emeralds, rubies, sapphires, etc.; also called step-cut, degree-cut: see quot. 1877.
ΘΚΠ
the mind > attention and judgement > beautification > types of ornamentation > jewellery > making jewellery or setting with jewels > [noun] > mode of cutting gemstones
trap-cut1853
step-cut1865
degree-cut1909
society > occupation and work > materials > raw material > gem or precious stone > [noun] > cut in specific style > specific style of cutting
diamond-cut1691
star-cut1815
table cut1820
trap-cut1853
trapping1853
table-cutting1871
degree-cut1909
princess cut1966
1853 O. Byrne Handbk. Artisan 225 The trap cut, or trapping, as it is called by lapidaries.
1865 H. Emanuel Diamonds & Precious Stones 98 The Trap or Step Cut. This is the most usual, besides being the most advantageous form of cutting emeralds and other coloured stones... There are generally only two or three steps from the table to the girdle.
1877 E. H. Knight Pract. Dict. Mech. Trap-cut, a mode of cutting gems in which the facets consist of parallel planes, nearly rectangular, arranged round the center of the stone.
This entry has not yet been fully updated (first published 1914; most recently modified version published online December 2021).
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n.1853
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