The Spectrum Signature Sale - A Diamond & Gemstone Continuum
Oct 19, 2025
1226 15th Ave SW, Vero Beach, FL32962, United States
Bidfair Fine Jewelry proudly presents The Spectrum Signature Sale—a curated celebration of colorful gemstone jewelry.  We have an amazing selection of jewelry with dazzling diamonds from deep within the Earth and responsible lab-grown sources, with a fascinating array of clear and colored diamonds sparkling alongside gorgeous gemstones, as well as premiering in nostalgic vintage, unique antique, and marvelously modern designs. Brave the ' corundum conundrom' of deciding on a favorite fiery red ruby, choosing amongst fancy sapphires of vivid pink, citrus orange, energizing yellow, and relaxing greens, or picking a shade of blue sapphire resembling deep ocean waters or cool mountain springs. Do you love emeralds? Pore over the Zambian emerald and diamond pieces, research newly discovered Ethiopian emeralds while viewing the awesome earrings in lot 69! Or let's talk tanzanites and gab about garnets, they're all here! Don't miss whimsical wonders and fascinating figural jewelry, too. In conclusion, Southwestern and Native American jewelry aficionados, Bidfair Fine Jewelry loves vintage and modern sterling silver, incredible craftsmanship, meaningful designs, and amazing opaque gemstones from Agate to Zoisite. We include them in each auction and hope you enjoy those chosen for this catalog. Thank you all, and please join us on October 19th for the live bidding!
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LOT 39:

Calvin Mariano Navajo Man's Shiva-Shell Ring .925

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Calvin Mariano Navajo Man's Shiva-Shell Ring .925. Setting: Sterling Silver .925 
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Calvin Mariano Navajo Man's Shiva-Shell Ring .925. Setting: Sterling Silver .925 
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Calvin Mariano Navajo Man's Shiva-Shell Ring .925. Setting: Sterling Silver .925 
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Calvin Mariano Navajo Man's Shiva-Shell Ring .925. Setting: Sterling Silver .925 
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Calvin Mariano Navajo Man's Shiva-Shell Ring .925. Setting: Sterling Silver .925 
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Calvin Mariano Navajo Man's Shiva-Shell Ring .925. Setting: Sterling Silver .925 
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Calvin Mariano Navajo Man's Shiva-Shell Ring .925. Setting: Sterling Silver .925 
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Calvin Mariano Navajo Man's Shiva-Shell Ring .925. Setting: Sterling Silver .925 
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Start price:
$ 50
Estimate :
$1,100 - $1,200
Buyer's Premium: 20% More details
sales tax: 7% On the lot's price and buyer's premium
Users from foreign countries may be exempted from tax payments, according to the relevant tax regulations
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Item Overview

Description:

Calvin Mariano Navajo Man's Shiva-Shell Ring .925

Setting: Sterling Silver .925

Main Gemstone: Shell (Operculum Mollusk)

Size: 11.5 US

Designer/Hallmark: CM (as per estate manager) - Calvin Mariano, Navajo silversmith.

Also called "Operculum Mollusk" and "The Tiger's Eye of the Pacific", the Shiva Shells are named after the Hindu god Shiva due to their resemblance to his third eye. (AI).

While most people are familiar with the beautiful Native American jewelry, they are not familiar with the Shiva Shell, so it makes a great "ice-breaker" or "conversation piece". This ring features an approximate 12x9mm oval, polished, slightly purplish Shiva Shell that is bezel-set in a tendrilled frame.  There are large cut-out sterling silver leaves on the shoulders that lead to an approximate 7.35mm shank.  This ring is US size 11.5 and bears the CM-Calvin Mariano, Navajo hallmark..  See sizing details and other information below.  ** See Cleaning and Care Guide For Shiva Shell Below. 

Admin: 33121/20br

1) This is an estate item in good condition. There is a "smooth seam" inside the ring shank. It is smooth and not a crack. 

2) All weights, sizes, measurements, as well as the color or clarity of any gemstones or diamonds mentioned in the titles, descriptions, introductions, notes or anywhere in the auction catalog shall be considered "approximate" regardless of the inclusion of the word "approximate" any similar adjective.

3) This ring can be sized for an additional charge. Please contact Bidfair Fine Jewelry for more information.

4) Props used to aid in photography are NOT included in any lot, unless stated in the title and/or description.


**CLEANING AND CARE GUIDE OR TIPS:

To care for a Shiva shell, gently clean it with a soft, damp cloth, avoiding harsh chemicals or abrasives; ensure it dries completely after cleaning, and consider storing it in a soft pouch to prevent scratches.  Follow the cleaning instructions for the metal as well, typically using a soft cloth with mild soap and water.  Avoid saltwater, as some salts can be abrasive and may damage the shell's surface. Avoid prolonged exposure to direct sunlight to prevent potential fading. - AI

Condition:  Very good
Weight:  17.18 gr

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