Tiffany Stone rough preformed slab, Bertrandite and Opal Fluorite (rs71797)

SKU: rs71797
Availability: 1 in stock

Tiffany Stone, aka Bertrandite, Opal Fluorite rough slab

Origin: Utah

Characteristics: Red, black, white, yellow.  preformed for cabochon or specimen. Opalized.  Unique  and rare pattern. Unfinished natural slab, no pits or open fractures. Several naturally sealed fracture lines that fit right in with the beauty of the slabs colors.   Hardness 7.

A major ore of Bertrandite is beryllium, and the major deposits of beryllium in the United States are in the Spor Mountains of Utah. Brush Wellman, Inc. bought the mineral rights to these deposits and began mining in the 1960's. Until recently this material was not available to the general public because the value of beryllium was high. For some reason it became more abundant in Arizona the last several years. Two types of this material exist, one is the opal fluorite type(tiffany stone) along with an agatized material.

Tiffany stone is a rock composed primarily of fluorite with smaller amounts of opal, calcite, dolomite, quartz, chalcedony, bertrandite and other materials. Other names used for Tiffany stone are "opalized fluorite," "ice cream stone," and "Bertrandite."

Approx size: 14 x 48 x 6 mm, Weight: 7.9g (39.5 ct)

First 3 pictures taken wet to bring out colors you may see after polishing. Remaining pictures taken dry to show imperfections if any.  If it's transparent one picture is taken with backlighting.

I use a full spectrum 45 w light bulb - photography photo CFL 5500K.  It is a daylight balanced pure white light. 

Unless noted all my rough slabs are preformed and the front and backs sanded with 320 diamond grit.

A 24mm coin and 10 mm squares in my pictures should help with image sizing.

Combining items:  Purchase 2 or more listings and we will combine them and give you a refund on the shipping overage charges.  No charges for extra items just additional postage if needed.

I create my items on Shopify and link them to Ebay with a Pay Now option, that's why you can't request an invoice and I can't create an invoice for multiple purchased items.

Refunds will be sent back through Paypal or your credit card if you used one. 

Free Shipping, Ebay and Shopify.  Purchase over $35, rough chunks excluded. 

Free Mystery slab - Purchase 3 or more slab listings and get a free slab.

Free Mystery cab - Purchase 3 or more cab listings and get a free cab.

100% money back return, you can return any item for any reason, buyer pays for return postage unless it's our fault.  See our return policy for more info.  You must contact us before returning any item.

Sales tax: If your State requires you pay a sales tax it will be added on during checkout.

Insurance:  Your package is insured if it is lost. We are not responsible if tracking shows it was delivered to your address..

Placing items in your cart: Just a heads up, anyone can still purchase items you may have in your cart, placing items in a cart doesn't protect them from being purchased by someone else.

Finishing your slabs: Want to finish your slabs or create a cab and want to know a little more about that, my internet website Designsbyshirl has several blog posts on how to select rough and create a cabochon.