January 2017 Update, Page 5

 

 

OKO-736

FIGURED SPECIMEN

OKO-736    Quartz     Boca Rica Mine, Galileia, Minas Gerais, Brazil.  Ex. Harold L. Dibble collection.  FIGURED SPECIMEN from the book, Quartz: An Introduction to Crystalline Quartz, page 87 by Harold Dibble.  A fine large scepter of smoky quartz.  Lots of skeletal growth on both the cap and stem of the crystal.  It measures 14.5 x 9.4 x 9 cm.  There is some chipping and a little damage to cap in one spot but it is not distracting and on back of piece (even though you can view this piece from any direction nicely).  Well developed clay inclusions... not random, nice layers in between skeletal layers.  Very high luster, even for quartz.  Base is well developed and even more skeletal than the cap.  Very little base contact.  An excellent specimen of aesthetic quartz.   $1,500

 

 

 

 

 

OKO-737

FIGURED SPECIMEN

OKO-737      Quartz    Minas Gerais, Brazil.  Ex. Harold L. Dibble collection.  FIGURED SPECIMEN from the book, Quartz: An Introduction to Crystalline Quartz, page 18 by Harold Dibble.  It is not hard to figure out why this fine specimen was used in a book on quartz.  It is large, clear, interesting in form, average for luster, but so attractive in-hand that it really gets one's attention.  It measures 16. 5 x 4.4 x 4.1 cm and shows a strong Tessin habit development.  One of its two terminations has a micro rub (Wilber).  Light prism striations on some faces.  A fine piece.  $950

 

 

 

 

 

 

OKO-738

OKO-738     Quartz      Minas Gerais, Brazil.    Ex. Harold L. Dibble Collection.  Deep smoky colored, transparent quartz point with no damage and high aesthetic values.  Great luster and form, rich color, gemmy except at base.  Termination has a large rainbow as seen in third image.  $600

 

 

 

 

 

 

OKO-739

FIGURED SPECIMEN

Back

OKO-739    Quartz     2nd Sovietsky Mine, Dal'negorsk, Primorsky Kray, Russia.  Ex. Harold L. Dibble collection.  FIGURED SPECIMEN from the book, Quartz: An Introduction to Crystalline Quartz, page 10, by Harold Dibble.  This is the nicest example of this fine beta-form quartz that I have seen outside a museum.  The large plate measures 15.5 x 15.2 x 4.2 cm.  The crystals are both the recognizable light green and white.  Most of the smaller crystals are clear.  The largest crystals are up to 3 cm each.  One crystal near the center of one face (the one most individuals would consider the front and the side that was photographed in Harold's book) has a chip.  Other than this the piece is in amazing shape on both sides and even the edges.  Minor edge contact on one side.  Great example of this uncommon material.  $3,000

 

 

 

 

 

 

OKO-740

OKO-740       Fluorite and Barite on Sphalerite       Carthage, Tennessee.  Ex. Harold L. Dibble collection.  17.6 x 11 x 6 cm.  Large cube measuring 4 cm on edge is central to this well balanced piece.  Good luster (moderate, not super high).  No damage, just natural contacts to bottom edge of sphalerite cluster and a small contact on one corner of the fluorite.  Nice.  $300

 

 

 

 

 

 

OKO-730

Bottom

OKO-730     Fluorite     Cave-In-Rock, Illinois.    Ex. Harold L. Dibble collection.  Blues, purples and yellows are all here and well represented.  The specimen sits well the way it is being held in the first image.  Notable damage on corners of biggest cube but still a specimen that is attractive and belongs in someone's collection.  14.4 x 13 x 10.7 cm.  Lower luster, etching on edges and back.  $175

 

 

 

 

 

 

OKO-731

OKO-731    Fluorite     Cave-In-Rock, Illinois.  Ex. Harold L. Dibble collection.  Another big fluorite measuring in at 14 x 11.7 x 7.1 cm overall with cubes to 7.5 cm on edge.  Great colors, moderate luster and nice aggregation.  Some damage as seen but still an attractive piece.  Beautiful surface growth features and nice phantoms.  $295

 

 

 

 

 

 

OKO-732

FIGURED SPECIMEN

OKO-732    Quartz     Minas Gerais, Brazil.  Ex. Harold L. Dibble collection.  This is a strange piece described in Harold's book.  It is composed of small stalactites of quartz.  It looks to me like there are thin tabular calcites capping some of the quartz stacks.  VERY strange.  Not very aesthetic so $200 will find it a new home.  19.1 x 12 x 6.1 cm.  No damage.  $200

 

 

 

 

 

 

OKO-735

Back

OKO-735     Grossular      Jeffery Quarry, Asbestos, Quebec, Canada.  Ex. Harold L. Dibble collection.  This piece is internally free of damage but has strong edge contact as seen.  What is complete is very nice:  translucent to transparent crystals, nicely formed crystals, attractive cinnamon coloration.  Back has some crystallization too.  16.1 x 6.5 x 5.1 cm.  A good example.  $340

 

 

 

 

 

 

OKO-733

OKO-733      Beryl      Criminoso, Minas Gerais, Brazil.  Ex. Harold L. Dibble collection.  A large gem crystal of an unusual light green color.  It measures 5.7 x 3.6 x 3.5 cm.  One termination steeply inclined (looks to me like a healed surface vs. an actual set of faces however it also could be an etched termination.  In either case it is complete, natural and damage free.  There is one good side on the piece with the other sides showing chips on the striated prism faces.  One large contact at base of backside of piece.  It certainly has issues but is still a major specimen.  There are at least a couple of hollow tubes running almost the entire length of the crystal.  They are plugged at the termination by a light brown mineralization or clay.  $1,500

 

 

 

 

 

 

OKO-734

OKO-734    Tourmaline on Muscovite      Brazil.     Ex. Harold L. Dibble collection.  This is likely from the Pederneria Mine.  Many multicolored tourmalines to over 6 cm each cover the surface of this plate of muscovite.  The plate is large (16 x 12.4 x 5 cm), and in the shape of a shallow dome.  Crystals are everywhere but most are incomplete or broken.  The majority are blues and pinks, often with pinks having blue rims.  The largest tourmaline is quite nice; however, there is distracting mica overgrowths making it somewhat camouflaged.  $300 takes it.

 

 

 

 

 

 

OKO-498

OKO-498    Rhodochrosite     N’Chwaning Mines, Kuruman, Kalahari Manganese Field, North Cape Province, South Africa.  Ex. Thomas G. Fowler collection.  This thumbnail-sized specimen measures 2.3 x 2.3 x 1.5 cm and the damage is obvious.  Some crystals are fine.  Currently mounted in a perky box.  This material is so coveted by collectors. $100

 

 

 

 

 

 

OKO-499

OKO-499    Rhodochrosite     N’Chwaning Mines, Kuruman, Kalahari Manganese Field, North Cape Province, South Africa.  Ex. Thomas G. Fowler collection.  This thumbnail-sized specimen measures 2.5 x 1.8 x 1.6 cm.  The quality on this one is very high being composed of many undamaged, gemmy, deep red crystals, and as bright as these crystals come.  Front edge is not mineralized fully (not damaged) and the back edge does have minor contact.  Overall this is exceptional for a thumbnail sized piece. Currently mounted in a perky box.   $900

 

 

 

 

 

 

OKO-500

OKO-500    Rhodochrosite     N’Chwaning Mines, Kuruman, Kalahari Manganese Field, North Cape Province, South Africa.  Ex. Thomas G. Fowler collection.  This thumbnail-sized specimen measures 1.8 x 1.2 x 1 cm and the damage is isolated to one , maybe two, terminations in this group of schalenohedral crystals.  One small graphite flake, one termination with minor quartz dusting on top.  Very nice.  $350

 

 

 

 

 

 

OKO-501

OKO-501    Rhodochrosite     N’Chwaning Mines, Kuruman, Kalahari Manganese Field, North Cape Province, South Africa.  Ex. Thomas G. Fowler collection.  This example measures 1.9 x 1. 6 x 1 cm overall and is composed of bright, cherry red crystals on red rhodochrosite matrix.  Some points show tiny cleaves while others are pristine.  Still, given the damage it displays nicely and will make for an attractive reference piece in someone’s collection.  Currently mounted in a perky box.   $300

 

 

 

 

 

 

OKO-502

OKO-502    Rhodochrosite     N’Chwaning Mines, Kuruman, Kalahari Manganese Field, North Cape Province, South Africa.  Ex. Thomas G. Fowler collection.  This example measures 3.3 x 1.8 x 1.5 cm overall and is composed of bright, pink crystals on black crystalline matrix.  Damage as seen  Still, given the damage it displays nicely and will make for an attractive reference piece in someone’s collection.  Currently mounted in a perky box.   $250

 

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