When you are in the market for diamonds in Cupertino, you want to have access to the very best dealers. This means you want to have a good range of choices to find a dealer that fits your needs as well.

Thankfully, we have you covered for all of your diamond related needs and more. Here we have a list of the best local diamond dealers and rare gemstone dealers as well. Each and every business on this list is ready to help you buy, sell, or trade the gems that you want on your terms, in your time.

ROSA'S DIAMONDS & PEARLS EXTRAVAGANZA

678 Johanna Ave Apt #3, Sunnyvale, CA 94085

(408) 521-2177

Diana's Jewelers

123 E. Fremont Ave, Sunnyvale, CA 94087

(408) 733-0417

Stan's Radiographic Service Inc.

2100 Walsh Ave, Santa Clara, CA 95050

(408) 606-9092

Helzberg

2855 Stevens Creek Blvd Ste 2213, Santa Clara, CA 95050

(408) 248-3511

Ben Bridge Jewelers

WESTFIELD Valley Fair, Santa Clara, CA 95050

(408) 985-8884

Samuels Jewelers

2855 Stevens Creek Blvd, Santa Clara, CA 95050

(408) 244-4333

Samuels Diamonds

2855 Stevens Creek Blvd Ste 1163, Santa Clara, CA 95050

(408) 244-4333

Joe Escobar Diamonds

450 E Hamilton Ave, Campbell, CA 95008

(408) 341-0300

The Jewel Box Jewelers

350 E Campbell Ave, Campbell, CA 95008

(408) 377-9898

Excelsior Coins & Precious Metals

1550 Winchester Blvd, Campbell, CA 95008

(408) 376-0630

Coin Appraisal Assoc

365 1st St, Los Altos, CA 94022

(650) 948-8202

Bazak Diamonds

1000 Fremont Ave, Los Altos, CA 94024

(650) 949-2661

Dean's Designs

328 Main St, Los Altos, CA 94022

(650) 941-8280

Lovelady Diamond

15466 Los Gatos Blvd, Los Gatos, CA 95032

(408) 358-5336

Working With Diamond Dealers

Buying diamonds can be an intimidating process if you are not quite sure how it all works. Even though there is a lot of information available today about different diamond dealers and how to get the best deal, you still want to make sure that you are picking out the best possible vendor to give you the quality and value that you deserve. Not only will you want to educate yourself on the 4 C's of diamond buying, but you also need to learn all that you can about how the industry works. This will help you find a reputable, honest and ethical dealer.

The best diamond dealer will always be able to offer you a certificate or the grading report for any diamond that they offer. You need to make sure that this is a certificate that comes from an independent, recognized laboratory such as HRD, DCLA, GIA or AGS. These diamond grading specialists use only the best and most advanced equipment and the strictest procedures to inspect their diamonds. Therefor, you know that you are getting nothing but the utmost quality for the money that you are investing.

When working with diamond dealers, you always want to pay attention to what they offer for certified diamonds and never go with one that tells you that there will be an additional charge for a certificate by an independent laboratory. Only reputable dealers will already offer this included in your diamond buying experience. If you ever, at any time, feel as though you are unsure of whether or not you can trust a dealer, you are best off shopping for your diamonds elsewhere.

All in all, you will find that taking your time to choose the right dealer to get your diamond(s) from will be the best way to ensure total quality for the money.