PureGem® lab-grown blue sapphires are physically and optically identical to mined sapphires — the same corundum crystal structure, the same 9 Mohs hardness, and the same rich, velvety blue that has made fine sapphire one of the most coveted coloured stones in the world.
The finest blue sapphires are described by gemologists as a vivid, deep royal blue — and every PureGem® sapphire is individually selected to meet or exceed that standard. Conflict-free, sustainably created, and available at a fraction of the cost of a natural equivalent. Compare at $2,500 to $20,000+ per carat for a top-grade Kashmir blue sapphire equivalent.
PureGem® lab-grown blue sapphires are made to order in your choice of cut, shape, and carat size. See the Shipping & Delivery tab for completion estimates, or email us for available in-stock sizes.
About This Stone
Every PureGem® blue sapphire shares the same chemical composition, crystal structure, and optical properties as a mined sapphire — the only difference is how it was created. Grown in a controlled laboratory environment, each stone tests positive as genuine sapphire on all standard gemological instruments and meets the same quality criteria as the world’s finest natural sapphires.
Colour
Deep royal blue — the most prized shade in the sapphire world, evoking the legendary Kashmir and Ceylon sapphires that have commanded some of the highest prices ever achieved at auction. Vivid, consistent, and free of the colour variation that makes top-grade natural sapphires so rare.
Clarity
VVS to FL. Natural sapphires at this clarity grade are extraordinarily rare. Every PureGem® sapphire is held to this standard as a baseline, delivering a brilliance and transparency that mined stones at comparable prices rarely achieve.
Hardness
9 Mohs — second only to diamond, making blue sapphire one of the most durable gemstones available for rings, pendants, earrings, and any fine jewellery intended for daily wear.
Customization
Available in any cut — round, oval, cushion, emerald, pear, marquise, and more — and in any carat size up to 30 carats. Each stone is hand-cut to your exact specifications and set in your choice of solid 10k, 14k, or 18k gold in yellow, white, or rose, or 950 platinum.
Ethical & Eco-Friendly
No mining, no land disruption, no conflict. PureGem® sapphires are sustainably created and conflict-free by design — the same beauty, none of the compromise.
