Quartz (Japan-Law Twin) - image 1

Quartz (Japan-Law Twin)

Unknown Owner
Help improve this recordNo owner is registered for this specimen yet. If it's yours or you know more about it, you can add the owner, provenance, publications and other details.
Sign in to contribute
All seasoned mineral collectors are familiar with this very distinctive twin law, the Japan-Law Twin (in which the two sides must grow at 84.33 degrees) which typically presents as a symmetrical heart shape. As the name suggests, this twin law was named for specimens found in Japan, at this very mine in Kofu, not too far from the bay area metroplex. As such, Japan-Law Twins that are actually from Japan are considered to be very valuable, and they almost never reach the size that this specimen does-the vast majority are thumbnails or miniatures, usually under 4 centimeters. It's very large, it's beautifully symmetrical, and it proudly shows that stout heart shape: it's no exaggeration to say that this is simply the perfect Japan-Law Twin specimen. This specimen comes with a custom acrylic base.

Product details

SizeSmall Cabinet
Dimensions7.0 x 9.0 x 1.5 cm
Added on06/14/2025

Known provenance

DateCollectorAcquisition price
03/2025Unknown Owner$8,125.00
purchased from Heritage Auctions (Dan Kennedy's collection)
Dan KennedNot disclosed

Learn more

Quartz
Mineral guide
Learn about Quartz
a versatile mineral with clear, milky, and colored varieties; crystal forms, formation clues, and tips for identifying amethyst and citrine.
Regional guide
Quartz from Otome mine
Sign in to contribute