“The Story of Victoria Stone”
by Vyonne Mack-WGMS Club Member
This article was printed in the McPherson Rock ClubBulletin (Kansas)
Victoria Stone is also known as “Imori Stone”, named after it’s Japanese creator, Dr. Imori. It Is not an artificial or fake stone. What Dr. Imori was able to accomplish was to actually blend several different minerals using a special process known only to him to come up with an Imori Stone, commonly called Victoria Stone.
This beautiful reconstructed gem is mineralogically similar to Nephrite Jade. It has a hardness of six, a specific gravity of 3.02, and a refractive index of 1.62. It was laboratory produced from natural raw materials such as quartz, feldspar, magnesite, calcite, fluorspar, etc. for a total of seven different minerals-fused together under high pressure and high temperature and again mineralized to make this gem by adding special crystallizers and habit regulators.
This is not an imitation or synthetic but is a reconstructed natural stone. The boule of Victoria stone was slowly cooled down for 35 to 40 days to make it crystallize into the pretty fan shapes.
Victoria Stone is mineralogically similar to nephrite jade, but the arrangement of the actinolite crystals is different. Instead of the crystals interlocking and tying together as they do with jade, they have crystallized in fan shapes to provide the beauty of the stone. As a result of this difference, the rough stone is more likely to crack or splinter if overheated.
Victoria Stone could be bought by the boule or in slices when it was produced in 15 different colors from 1960 to the 1980’s –green, sky blue, reddish-purple, yellow-green, blue-green, sky indigo, chocolate, yellow, deep indigo, white, quiet green, quiet yellow, quiet blue, grey and black.
To cut Victoria Stone, cut it first lengthwise, then let it set for 24 hours; then you can go ahead and slice it using normal cutting procedures, using plenty of water to keep it cool so it won’t shatter.
First sand on sharp 220 grit sanding cloth, then sharp 320 cloth, with a final sanding on a worn 320 cloth. A quick and easy polish can then be obtained finishing on a dry leather buff with tin oxide.
The transparent Victoria Stone that is used for faceting is composed of di or trisilicates of earth elements and alkali metals. The hardness is 5.5 to 6, specific gravity of 3.02, and a refractive index of 1.12. It was quickly cooled down in one day so that it wouldn’t crystallize into patterns.
The faceted Victoria Stone came in 8 colors, including sapphire blue, emerald green, amethyst purple, ruby red, topaz, aquamarine, garnet, and peridot green.
Dr. Imori died without confiding in anyone how the process worked and no one has been able to duplicate it. There is only a limited and non-replenishable supply of Victoria Stone in existence when this material is used up to make jewelry and cabochons, it will become scarcer and about impossible to find.
Reference: Handout Material with Purchase