Tianyu Gems is a professional lab-grown gemstone manufacturer in China.
Dozens of colors are available in all shapes and sizes; a GRC certificate is available. From Hydrothermal Emerald to Lab-Grown Sapphire, Identical to top earth-mined gems, 90% cheaper, eco-friendly
Every gemstone is meticulously hand-cut in any shape and cutting you desire, ensuring unparalleled quality and brilliance. Our commitment to precision and artistry guarantees that each piece is a unique masterpiece, reflecting the highest standards of craftsmanship.
Lab-grown sapphires can be produced in various colors, such as blue, pink, yellow, green, purple, and even colorless (white). These lab-grown gemstones have the same physical and chemical properties as natural sapphires, making them almost indistinguishable to the naked eye. However, gemologists can often identify them through specialized testing.
One of the main advantages of lab-grown sapphires is their affordability compared to natural sapphires, which can be quite expensive due to their rarity and the cost of mining. Additionally, lab-grown sapphires are considered more environmentally friendly since they do not require extensive mining and have a smaller carbon footprint.

Vintage Character, Reimagined in Lab-Grown Sapphire
This distinctive lab-grown sapphire features a classic Old Mine Cut in a soft cushion shape, inspired by the charm of antique gemstones. Its deep blue color is beautifully enhanced by broad, chunky facets, creating a captivating interplay of light, shadow, and reflections.
Unlike highly symmetrical modern cuts, the Old Mine Cut is known for its slightly irregular facet arrangement, rounded corners, and larger facets. These characteristics give the stone a unique personality and a warm, vintage-inspired appearance.
Crafted from lab-grown sapphire, this gemstone offers the beauty and durability expected from sapphire while providing a modern alternative for jewelry designers and manufacturers. The rich blue color and antique-style faceting make it particularly suitable for vintage engagement rings, statement rings, cocktail jewelry, pendants, and custom jewelry designs.
Each stone can be further customized in terms of shape, size, color, and cutting style, making it an excellent choice for designers looking to create distinctive gemstone jewelry with an old-world aesthetic.
Key Features
ANY SIZE, COLOR, CLARITY,SHAPE REQUIREMENT FOR OUR DIAMONDS AND OTHER PRODUCTS ARE MOST WELCOMED, For more cutting details, Please click here Gemstone Cuts

The combination of antique-inspired cutting and modern lab-grown sapphire creates a unique balance between heritage and innovation. Its broad facets produce a distinctive visual pattern that is different from conventional brilliant cuts, making every gemstone feel individual and full of character.
For jewelry brands, designers, and manufacturers, this cut offers an excellent way to create vintage-inspired jewelry using a contemporary material.
Leave A Message
The first thing Tianyu Gems lab grown diamond manufacturers do is meeting with our clients and talk through their goals on a future project. During this meeting, feel free to communicate your ideas and ask lots of questions.