What symbol is this?

[Arenee22]

This symbol is in a 14K gold diamond solitaire. It was my grandmothers. I’ve been trying to research to figure out what manufacturer it is. No luck yet.

 

[VRBeauty]

Since many goldsmiths also worked in silver, you might want to check this list of silver makers marks. Be sure to check listings for A, D, and S, since the listings are alphabetized by company name rather than what appears on the hallmark.
(I’m assuming this piece was mfg’ed in the US. If you have reason to believe it was mfg’ed elsewhere, you might want to check the listings for that country.)

American Silver Marks D - Online Encyclopedia of Silver Marks, Hallmarks & Makers' Marks

American Silver Makers' Marks found on Sterling Silver and Coin Silver - 925-1000.com, the internet's most extensive resource for research of Silver Marks, Hallmarks & Maker's Marks

www.925-1000.com

 

[Arenee22]

Since many goldsmiths also worked in silver, you might want to check this list of silver makers marks. Be sure to check listings for A, D, and S, since the listings are alphabetized by company name rather than what appears on the hallmark.
(I’m assuming this piece was mfg’ed in the US. If you have reason to believe it was mfg’ed elsewhere, you might want to check the listings for that country.)

American Silver Marks D - Online Encyclopedia of Silver Marks, Hallmarks & Makers' Marks

American Silver Makers' Marks found on Sterling Silver and Coin Silver - 925-1000.com, the internet's most extensive resource for research of Silver Marks, Hallmarks & Maker's Marks

www.925-1000.com

Thank you for the information!