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Thesis Gems and Jewelry

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Berkeley, CA
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About Thesis Gems and Jewelry

We believe that people and the environment are more valuable than any gem. That’s why Thesis seeks sources that are committed to ethical treatment of workers and the land. Every aspect of our supply chain is carefully monitored for fair labor practices and environmental sustainability. And we donate 1% of our profits to organizations fighting to conserve and defend our planet through our membership with 1% For The Planet. Our partnerships work to ensure that your jewelry is ethically made, from the time your gem is liberated from the earth in Africa, Australia, Sri Lan...Read More

Thesis Gems and Jewelry

1stdibs Dealer Since 2018

Contact Info

Featured Pieces

3.3 Carat Colombian Muzo Emerald and Fancy Yellow Diamond Pendant
By Thesis Gems and Jewelry
Located in Berkeley, CA
3.3 carat fancy shield cut Colombian Muzo Emerald is set in a hand fabricated 22 karat gold setting with a 0.375 carat vintage fancy yellow diamond. This emerald is vibrant with an a...
Category

2010s Artisan Drop Necklaces

Materials

Diamond, Emerald, Yellow Diamond, 22k Gold

Reversible Tsavorite and Diamond Pavé Drop Earrings in 18 Karat Gold
By Thesis Gems and Jewelry
Located in Berkeley, CA
Take these out on the town. Hand made by our master goldsmith and gem setter, these reversible drop earrings are made with the finest Bridges tsavorites and diamonds. Re-cut recycled...
Category

2010s Artisan Drop Earrings

Materials

Tsavorite, White Diamond, 18k Gold

Engagement Ring with Cleaopatra's Eye Cut Diamond, and Tsavorite Pavé
By Thesis Gems and Jewelry
Located in Berkeley, CA
A singular Cleopatra's eye cut diamond (E/VS- 0.64 ct) with a tsavorite pavé. An engagement truly like no other, this diamond is absolutely fascinating. Hand carved wax/cast, made b...
Category

2010s Contemporary Engagement Rings

Materials

Garnet, White Diamond, 18k Gold

2.76 Carat Antique Rose Cut Diamond and Colombian Emerald Engagement Ring
By Thesis Gems and Jewelry
Located in Berkeley, CA
2.76 carat antique rose cut diamond with hand fabricated in 18 karat Fairmined gold, flanked by 4 mm Colombian Muzo emeralds (0.5 carat total weight). Diamond: 2.76 carat IJ/SI1 wi...
Category

Antique 1870s Artisan Engagement Rings

Materials

Diamond, Emerald, 18k Gold

2.79 Carat Ceylon Sapphire and Tsavorite Engagement Ring
By Thesis Gems and Jewelry
Located in Berkeley, CA
A 2.79 ct Ceylon sapphire, pear shaped; encircled with the finest tsavorites. A combination of old world techniques that only a hand made piece of fine jewelry will offer- hand carve...
Category

2010s Artisan Engagement Rings

Materials

Blue Sapphire, Tsavorite, 18k Gold

Sea of Cortez Pearl, Diamond and Tsavorite Pendant Necklace
By Thesis Gems and Jewelry
Located in Berkeley, CA
An homage to color and phenomenal gems. This pendant features a "U" grade Sea of Cortez Pearl is encircled by Canadian diamonds, with a marquise 1.97 carat tsavorite. Hand fabricate...
Category

2010s Artisan Pendant Necklaces

Materials

Diamond, Pearl, Tsavorite, 18k Gold

Moonstone, Mozambique Ruby, Diamond and 22 Karat Gold Pendant Necklace
By Thesis Gems and Jewelry
Located in Berkeley, CA
A fine, clear blue Ceylon Moonstone, pear shaped Mozambique Ruby and re-cut antique rose cut diamond champion each other in this glorious pendant. Side profile is hammered and scat...
Category

2010s Artisan Pendant Necklaces

Materials

White Diamond, Moonstone, Ruby, 22k Gold

Colombian Muzo Trapiche and Diamond Cuff Links with 18 Karat Gold
By Thesis Gems and Jewelry
Located in Berkeley, CA
These Colombian Muzo emerald trapiche cuff links are hand forged in 22 and 18 karat gold. Trapiche are a natural Colombian emerald formation found in and near the legendary Muzo mine...
Category

2010s Artisan Engagement Rings

Materials

Diamond, Emerald, Gold

Fire Opal and 18 Karat Gold Pendant Necklace
By Thesis Gems and Jewelry
Located in Berkeley, CA
Baroque Mexican Fire opal. Truly magical. This pendant features a hand fabricated 18 karat gold cap and bail. One of a kind. 18 karat solid recycled gold cap. Mexican fire opal; 8....
Category

2010s Artisan Pendant Necklaces

Materials

Opal, 18k Gold

Colombian Emerald Carved Horse Head and Diamond Lapel Pin
By Thesis Gems and Jewelry
Located in Berkeley, CA
This lapel pin features a 5.7 carat hand carved Colombian Emerald in a hand forged 18 and 22 karat gold setting and clasp. The shield cut diamond on the clasp is F-VS2, and 0.27 cara...
Category

2010s Artisan More Jewelry

Materials

Diamond, Emerald, 22k Gold, 18k Gold

Colombian Muzo Trapiche Emerald 18 Karat Gold and Diamond Engagement Ring
By Thesis Gems and Jewelry
Located in Berkeley, CA
This ring features a 4.65 carat Colombian Muzo emerald trapiche. This piece is for the collector whom understands and appreciates this phenomenal natural emerald formation. Trapiche ...
Category

2010s Artisan Engagement Rings

Materials

Emerald, Diamond, 18k Gold

Colombian Emerald, Australian Opal and Sea of Cortez Pearl Pendant Necklace
By Thesis Gems and Jewelry
Located in Berkeley, CA
This piece was made to honor color and phenomenal gems. This pendant features a 1.29 carat shield cut Muzo Colombian emerald, a rare baroque AAA Sea of Cortez Pearl and a solid Austr...
Category

2010s Artisan Pendant Necklaces

Materials

Diamond, Pearl, Emerald, 22k Gold

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