Design Theory

Design Theory

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Vintage + modern treasures influenced by nature, art and glamour! www.designtheoryjewelry.com Pieces from 3000 BC to today!

Design Theory - Heirloom + modern jewelry and treasures created and curated by travelers and gem lovers. Design Theory has a special line of new and vintage engagement rings under $1000. Let us know if you have a special request or want to do layaway 800-710-2780 or [email protected]

Facebook Store: http://www.facebook.com/designtheoryjewelry
Online Store/Website: www.designtheoryjewelry.com
Instagram: @designtheoryjewelry
Twitter: @theoryjewelry
Pinterest: @theoryjewelry

Antique Aquamarine Ring with Detailed Setting 02/27/2025

This is a beautiful alternative to a traditional engagement ring.

Antique Aquamarine Ring with Detailed Setting Glorious antique aquamarine ring with detailed sterling setting indicative of the time. Size 5.5 that can be sized by a good jeweler.

Estate Amethyst + Diamond Ring - Size 7.5 02/13/2025

This is for the Aquarius babies out there!

Estate Amethyst + Diamond Ring - Size 7.5 Glorious light purple hue to this huge 9 carat Amethyst set in a fleurette shape with 40 Rose Cut Diamonds totaling nearly 1/2 a carat in weight. It is in sterling with gold embellishments. This is a luxury item.

Vintage Green Tourmaline + Diamond Ring - Size 4 02/04/2025

Are you looking for a dark green smouldering stone that reflects your inner green goddess? Look no further than this stunner!

Vintage Green Tourmaline + Diamond Ring - Size 4 Intense Green Tourmaline (over 3.5 carats) set off by a setting that is studded with numerous natural diamonds. De-Lovely!! Sterling + 14K Gold Setting that is a small size 4, indicative of the era.

Emerald Cut Garnet and Rhodolite Ring 11/06/2024

Take a closer look at the stunning hues of this rhodolite ring...all the colors of a beautiful glass of red wine!

Emerald Cut Garnet and Rhodolite Ring Alluring emerald cut trilogy ring with pinkish toned Rhodolite Garnet at the Center (1.3cts-5mm x7mm) from the Orissa mine in India. It is flanked on either side by a deep Red Garnet (.75ct each) from Mozambique. This piece is set in sterling. Absolutely perfect for everyday wear. Size 8 can be size...

Vintage Estate Sapphire Starburst Ring-Rare (5.2 Carats) 11/05/2024

This sapphire starburst ring is a sight to behold!

Vintage Estate Sapphire Starburst Ring-Rare (5.2 Carats) 5.2 Carat Victorian Sapphire Starburst Ring, large flowery starburst pattern set in silver. Size 9, can be sized by your jeweler. Amazing and rare.

Diamond and Gold Ring - Size 8.5 10/26/2024

Glorious mine cut diamond statement ring with unique shape and gold vermeil setting.

Diamond and Gold Ring - Size 8.5 Unique, oval shaped ring rose cut diamonds radiating out into six bright unshaped diamonds totaling .88 carats. Gold vermiel covers the setting and shank. Size 8.5.

DragonflyDiamond Encrusted Silver Pendant 10/12/2024

Charming diamond encrusted butterfly themed pendant in silver.

DragonflyDiamond Encrusted Silver Pendant Diamond Encrusted Dragonfly Pendant, Silver Setting.

Art Deco Ruby + Pearl 925/Rose Gold Ring 10/08/2024

I love this ring from the Art Deco era with rubies and a pearl in the center. Just gorgeous!

Art Deco Ruby + Pearl 925/Rose Gold Ring Art Deco Ring with bands of pinkish over 2.3 carats of African rubies, alternating with rose gold and Sterling silver - stunning with pearl center stone. Simply magical.

Antique Pink Ruby + Gold Ring 06/06/2024

Stunning antique pink ruby ring set in gold - perfect for any era!

Antique Pink Ruby + Gold Ring Delightful antique Pink Ruby (approximately 1 cm long x .5cm wide) set in elegant yellow gold setting. Size 5, can be sized by a good jeweler.

Western WA predicted to see above normal fire risk this summer 05/20/2024

Not great news for those of us in the Pacific NW....

Western WA predicted to see above normal fire risk this summer A warm winter has set certain parts of the state up for wildfire, but a shift to La Niña could balance things out.

05/17/2024

New pieces about to hit the site - stay tuned!!!

Art Deco Crystal Necklace 03/15/2024

Gorgeous Art Deco cut glass crystal necklace. Perfect for a wedding or special event.

Art Deco Crystal Necklace Elegant Art Deco era drop necklace features square cut and cabazon crystals. At the center is the large tear drop shaped crystal. Necklace measures 17"

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Our Story

Design Theory - Heirloom, modern jewelry + treasures created and curated by travelers and gem lovers. Pieces from 3000 BC to today!

Design Theory has a special line of new and vintage engagement rings under $1000. Let us know if you have a special request or want to do layaway 800-710-2780 or [email protected]

Facebook Store: http://www.facebook.com/designtheoryjewelry
Online Store/Website: www.designtheoryjewelry.com
Instagram: @designtheoryjewelry
Twitter: @theoryjewelry
Pinterest: @theoryjewelry

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Seattle, WA