Mahogany and black sheen Obsidian preformed rough slab, 22 x 50 x 7 mm, iridescent black sheen, natural (rs10423)

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Our shop's in Windsor, California, USA,  selling lapidary preformed (sanded and shaped) slabs, small specimen rough and cleaned ancient Greek and Roman coins ready for jewelry. 

My preformed rough slabs have all or most of the pits and open fractures removed and the front and back smoothed to produce a more acceptable slab for you to finish as a cab or specimen.


Mahogany and black iridescent Obsidian

Origin: California.

Color: Black and brown Obsidian.

Characteristics: Beautiful black Obsidian with brown Mahogany. Natural, The movement of the slab produces flashes of iridescent black Obsidian. Preformed lapidary slab ready to finish, Includes the black plastic stand.

Approx size: 22 x 50 x 7 mm, Weight 91.5 ct.

My preformed (shaped and sanded) rough slabs are small to medium size.  I cut out most or all open fractures and ugly pits.  I will try and note anything unusual in a slab (druzy, small pits, natural sealed fractures, etc.).  I sand all sides of a slab with 180 diamond grit so they are ready for you to finish with a finer grit and polish or they are nice enough to keep as a specimen asis.

A lot of effort went into giving you a product that will make it easier for you to finish, or keep it as a nice looking natural specimen and display it on the free plastic stand. The stand is included so it will help make the slab stand out in your specimen cabinet or on a shelf. Contact us if you have any special requests, for a small charge we will re-shape or cut special slabs to your specifications. Black plastic stand is included.

FINISHING: I try and get all or most of the pits and open fractures removed and the front and back smoothed to produce a more acceptable slab for you to finish for jewelry or specimen. My recommendation for finishing my slabs is to start with 325 diamond grit and finish with 600 to-1000 grit before polishing. For extra help I have created several posts that show how I create cabs, see my website blog on Designsbyshirl.com.

COMBINING: If your combined items will fit in my standard 9x7x3" bubble envelope you will only be charged for the actual weight. Any shipping overage you may have paid will be returned manually before I ship your package.

RETURNING: 100% money back return, you can return this 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.

PICTURES: Pictures are taken wet and dry. All are wet except the last 2, wet pictures help bring out colors, and dry will highlight imperfections if any. To help with visualization, I've taken pictures with background squares that are 10 x 10 mm, the dime is 18 mm. An inch is 25 mm. I use a full spectrum 45w light bulb, CFL 5500K. It's a daylight balanced pure white light.

CAMERA LIGHT: I use a full spectrum 45 w light bulb - photography photo CFL 5500K. It's a daylight balanced pure white light.

SALES TAX: Etsy will collect sales tax if your state has a tax law requiring it, it will be added on at checkout, Etsy will send it to your state.

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

Returns & Exchanges

I gladly accept returns and exchanges

Just contact me within: 3 days of delivery

Ship items back to me within: 7 days of delivery

I don't accept cancellations

But please contact me if you have any problems with your order.

The following items can't be returned or exchanged

Because of the nature of these items, unless they arrive damaged or defective, I can't accept returns for:

  • Custom or personalized orders

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