Australian Opal Ring, Boulder Opal Ring, Silver Adjustable Cocktail Ring, Large Brown Opal Special Occasion Ring, Wide Band Statement Ring

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Items are shipped within 1 - 3 days unless they are made to order. All items under $200.00 are…

About this Product

Stunning Boulder opal cabochon, cut by Ran, set in sterling silver bezel with a handcrafted adjustable tree bark textured ring shank and a silver back.  This beautiful gemstone cabochon ring is a great multi-purpose ring that you can wear with jeans or dress up for an evening.   This large stone ring is size 8 and can be self sized up to an 10 +/-.  If you need this ring to be smaller, just let us know and we can size it down and it will still self adjust up to 2 sizes larger.

Gemstone............................Australian Boulder Opal / Koroit Opal
Ring Size..............................8
Gemstone Weight................11cts +/-
Gemstone Size....................17mm x 14mm / .6" x .5" +/-
Ring Face Measurements... .7" x .6"
Band Measurement..............4mm / .15"
Band thickness...................1.2mm

Similar to the Cabochon Collection, our Adjustable Ring Collection also puts the focus on the gemstone.  Only this time, the adjustability answers the question “Which finger would like to wear a ring today?” Master Lapidarist Ran Armstrong has spent decades honing his crafts in lapidary arts, jewelry design and metal sculpting.  Starting with large pieces of rough material (rocks), Ran cuts slabs. He then begins the process of studying each slab to find the most interesting picture, pattern or color combinations before cutting the final cabochon for a jewelry piece.  Whether large or small, in a streamlined setting or something more intricate you can be sure that Ran has found the best part of the stone in this wearable art piece that is Distinctively Yours.

Stony Mountain Jewelry

Meet the Maker

Thanks for visiting Stony Mountain Jewelry!  Creating distinctive jewelry for you in a mountain top studio.  Our work is hand fabricated in sterling silver and high karat gold.  Using fine quality gemstones and our own hand cut cabochons, we are pleased to offer you many one-of-a-kind fine art jewelry pieces.

Shop Policies

Jewelry is a very personal item.   We realize you may not fully comprehend a jewelry item through a series of photographs.  We want you to be thrilled with your selection from Stony Mountain Jewelry and to wear it happily for many years.  Please shop with confidence; if one of our pieces is not as you perceived; you may return it within 7 days for a full refund.

Returned items must be in the original condition and original box for refund. We urge you to insure the package as we are not responsible for loss or damage. Please notify us of your intent to return the item prior to shipping.


We accept returns and cancellations

  • Contact me within: 3 days of delivery
  • Ship items back within: 7 days of delivery
  • Request a cancellation: before item has shipped (Items often ship within an hour of being purchased)
  •  Buyers are responsible for return shipping costs. If the item is not returned in its original condition, the buyer is responsible for any loss in value.
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Shop Reviews (161)

The craftsmanship of the bolo stone and setting was perfectly beautiful. We had a couple special requests and the sellers accommodated everything, and went the extra mile. The piece arrived in plenty of time for our son's wedding. Thank you for the excellent work and friendly customer support!


very nice stone and silver work; bolo tie shipped quickly and was well packaged