Loose Memory Diamond

personal carbon to diamond — a real memory transformed into a diamond.
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Lab-Grown Diamond & Fine Jewelry by Black Jack

Black Jack creates premium lab-grown diamond jewelry and personalized memory diamonds crafted using a personal carbon contribution from a loved one or companion. Our diamonds are ethically grown using advanced CVD technology and crafted into engagement rings, wedding rings, stud earrings, pendants, necklaces, and tennis bracelets.

We also specialize in lab-grown ruby, sapphire, emerald, moissanite, and fine silver jewelry — thoughtfully designed for everyday elegance and meaningful occasions. Each piece is created with precision, transparency, and trusted craftsmanship.

From modern engagement rings to deeply meaningful tribute jewelry, Black Jack brings together innovation, emotion, and lasting value — all in one place