Long Cushion Cut Loose Lab Grown Diamond Stone SI1 IGI Certified

This IGI-certified loose lab-grown diamond from Fine Diamond comes in a Long Cushion shape. It is available in D, E, and F color grades and has a SI1 clarity rating. The diamond is offered in sizes ranging from 1 to 5 carats. 

As a conflict-free and eco-conscious gemstone, this lab-created diamond is the perfect choice for those who care about sustainability without compromising on beauty. Ethically grown and responsibly sourced, it reflects modern values while maintaining all the natural allure of a traditional mined diamond. Ideal for crafting solitaire rings, pendants, and earrings, this gem offers complete design freedom with a clear conscience.

Whether you're celebrating a special occasion, shopping for April birthstone gifts, or simply designing a timeless piece of jewelry, this premium lab-grown diamond represents strength, purity, and enduring elegance. Explore our complete collection of lab-made diamonds, loose gemstones, and custom jewelry stones to create meaningful pieces that reflect your values. At Fine Diamond, we’re committed to delivering excellence with every stone.

Every Fine Diamond piece deserves to reach you with ease and comfort. That’s why we offer complimentary shipping and 30-day returns, so your only focus is the joy of unwrapping a diamond made to last forever.

Unveiling your jewelry should feel as beautiful as wearing it. Each Fine Diamond creation arrives in our iconic blue box, crafted to embody grace, celebration, and timeless charm. A moment of anticipation, a keepsake of love.

Need help with your ring size? View our Size Guide

1. We offer resizing for a perfect fit, depending on the design of the ring.
   
2. Get in touch with us via chat or call on +1 (973) 978-5390 to request the size you need.
   
3. We will confirm whether your selected ring is eligible for resizing.
   
4. Once confirmed, simply add an order note with your required size while placing the order.
   

Happy shopping! 💎

True brilliance shines with conscience. At Fine Diamond, our diamonds are responsibly sourced, chosen with care for both their beauty and their journey. Every diamond tells a story of love, integrity, and respect for you, and for the world we share.

Fine Diamond delivers accessible luxury through exceptional craftsmanship, timeless design, and transparent pricing, bringing you the same quality as traditional luxury brands without the inflated costs, and jewelry that honors your most meaningful moments.