Welcome to Carat Island
At Carat Island, we are passionate about providing exceptional gemstones and the expertise to transform them into cherished pieces of jewelry.

Our Foundation & Focus
Founded with a passion for brilliance and a commitment to ethical sourcing, Carat Island is your leading supplier of high-quality moissanite, lab-grown diamonds, lab-grown gemstones, and cubic zirconia. We are dedicated to providing an unparalleled selection of stones, ensuring exceptional quality, value, and sustainable choices for jewelers, designers, and individual buyers alike.
Our expertise in the gemstone market allows us to meticulously select each stone, guaranteeing its beauty and integrity. We believe in transparency and empowering our customers with the knowledge to make informed decisions.
While our core business is the supply of these exceptional stones, we also take pride in offering custom jewelry manufacturing services, helping to bring your unique visions to reality.
Discover Our Exquisite Loose Stone Collection
We meticulously source and supply a diverse range of high-quality, ethical, and stunning stones for jewelers, designers, and your personal custom creations.

Moissanite Stones
Known for its exceptional brilliance and fire, moissanite offers a stunning and durable alternative to diamonds.

Lab Gemstones
Vibrant and ethically sourced, our lab-grown gemstones (sapphires, rubies, emeralds, etc.) offer a rainbow of possibilities.

Lab Diamonds
Identical to natural diamonds in every way – chemically, physically, and optically. A smart and sustainable choice.

Cubic Zirconia
A popular and affordable diamond simulant, perfect for fashion jewelry and trying out new styles.
Custom Jewelry Manufacturing
While we pride ourselves on our premier stone collection, we also offer expert custom jewelry manufacturing. Have a specific design in mind? Our skilled artisans can bring your vision to life, crafting unique pieces using the stones of your choice.
From engagement rings to one-of-a-kind pendants, we work closely with you through each step of the design and creation process. We combine traditional craftsmanship with modern technology to ensure your custom jewelry is nothing short of perfection.

Why Partner with Carat Island?

Superior Stone Quality
We offer a meticulously curated selection of the finest moissanite, lab-grown diamonds, and gemstones.

Ethical & Sustainable Choices
Our commitment to lab-created stones ensures beauty with a conscience and minimal environmental impact.

Expert Guidance & Service
Whether selecting stones or designing jewelry, our knowledgeable team provides personalized support.