Gemmology
English | Български
Where am I? > Home > Repository > Corundum [synthetics]



Corundum [synthetics] — specimen S-004, photo © NMNHS
Corundum [synthetics] — specimen S-004, photo © NMNHS

Corundum [synthetics] — specimen S-004

Data

Weight: 6.29 ct; size: 14.87 | 7.90 | 4.94 mm; shape: cushion; colour: medium light purple; very slightly greyish; clarity: eye clean; cut: good.


Notes

Very clean specimen; commercial cut; good polish.

More information from ‘Classification’

Corundum [synthetics]

Manufactured mainly using the Verneuil process, also called flame fusion, developed by the French chemist Auguste Verneuil.


Gemmology — gemstones
Front page | Introduction | Classification | Repository | Library

© 2024 National Museum of Natural History, Sofia (NMNHS)
Use of this website assumes acceptance of our terms of use.

The specimens illustrated in this site do not exist in the collections of the National Museum of Natural History, Sofia.