GIA Certified Loose Diamonds in Houston & Austin, TX

At Zadok Jewelers, we offer an exceptional selection of GIA-certified natural diamonds, carefully curated for quality, beauty, and brilliance. Whether you're searching for the perfect center stone or comparing cuts, colors, and carat weights, our expert gemologists and bridal specialists are here to guide you with trusted knowledge and personalized education. With nearly 50 years of experience and the largest loose diamond selection in Houston and Austin, we take pride in helping you make a confident, informed decision for your most meaningful moments.

Expert Diamond Education, Personalized for You

Explore a full range of diamond shapes—from classic rounds to trending elongated ovals—alongside expert insight on clarity, color grading, and light performance. Our Houston and Austin showrooms offer a personalized experience where you can view stones in person and learn what makes each one unique. Whether you're just starting your search or ready to build your custom engagement ring, we’re here to support every step.

Ready to find your perfect diamond?