Cultured diamond (rough)

Lab-grown diamonds are genuine diamonds “grown” in a laboratory, with physical and chemical properties identical to those of natural diamonds. They are produced primarily using a six‑axis hydraulic press that replicates the extreme conditions deep within the Earth: at temperatures around 1,500°C and pressures of 50,000–60,000 atmospheres, graphite carbon is layered onto a seed crystal, where it crystallizes and grows over time. As gemstones, lab‑grown diamonds exhibit all the hallmark characteristics of natural diamonds—such as a Mohs hardness of 10 and dazzling fire—while commanding prices that are only 10% to 30% of those for natural diamonds. By sidestepping the ecological damage associated with open‑pit mining, they offer unparalleled purity and controllable quality, delivering exceptional value so consumers can afford larger, more brilliant stones without stretching their budgets.

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Lab-Grown Diamond

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Product Introduction

Product Type

White diamond loose diamonds (colorless to near-colorless range)
Colored diamond loose diamonds (yellow, pink, blue, green, etc.)
Carat diamonds (small‑size accent stones, suitable for cluster and pavé settings)

Core Advantages

Its physicochemical properties are identical to those of natural diamonds (e.g., Mohs hardness of 10, high thermal conductivity).
Customizable in size, clarity, and color to meet diverse jewelry design requirements.
The production process is environmentally friendly and traceable, aligning with the principles of sustainable development.
Stable supply chain and short lead times, ideal for bulk procurement.

Typical Applications

Jewelry: finished pieces such as rings, necklaces, earrings, bracelets, and more, set with gemstones or other inlays.
Loose Stone Wholesale: Supplying loose gemstones to jewelry manufacturing facilities and custom design studios.
Industrial/Technology Sector (Selected Specifications): Precision cutting tools, heat sinks, optical windows, etc. (additional items may be added based on the customer’s specific business needs)

Frequently Asked Questions

We offer free consultations to help resolve your issues.

What are the applications of functional diamond in the fields of thermal management and optics?

Diamond’s thermal conductivity is approximately five times that of copper and eight times that of aluminum, making it one of the materials with the best thermal performance currently known. The company’s functional diamond single crystals can be used in cutting-edge applications such as heat‑dissipating substrates for high‑power semiconductor lasers and 5G RF devices, optical windows for high‑power laser systems, and infrared thermal imaging systems.

What is the difference between lab-grown diamonds and natural diamonds?

Lab-grown diamonds are synthesized in a laboratory setting by replicating the natural diamond‑forming process using high‑pressure high‑temperature (HPHT) or chemical vapor deposition (CVD) techniques. They are chemically, structurally, optically, and physically identical to natural diamonds, with only subtle differences at the atomic level. Lab-grown diamonds offer advantages such as sustainability, traceability, and conflict‑free sourcing, while also commanding more competitive pricing.

Does the company support export operations? What certifications does it hold?

The company supports export operations, with a business scope that encompasses the import and export of goods. It has obtained ISO 9001 certification for its quality management system, ISO 14001 certification for its environmental management system, and ISO 45001 certification for its occupational health and safety management system. Additionally, the company has been recognized as a National High-Tech Enterprise, a “Specialized, Refined, Distinctive, and Innovative” SME in Henan Province, and a recipient of the Second Prize of the Henan Provincial Science and Technology Progress Award, among other prestigious accolades. Its products meet international standards.

Could you provide samples for testing? How do I apply?

Certainly. The company offers sample‑testing services to new customers, enabling them to evaluate product performance. Customers can submit their requests via the “Sample Request” page on our website or contact our sales team directly to discuss a customized testing plan. Sample dispatch takes 1–3 business days, and the samples are provided free of charge; customers are responsible only for the courier fees.

What are the product’s minimum order quantity (MOQ) and lead time?

The minimum order quantity for industrial diamond composite inserts and cutting tools varies depending on the specific specifications. Standard products are kept in ample stock, with a typical delivery lead time of 7–15 business days; custom‑made items require confirmation of the exact delivery schedule based on order volume and manufacturing requirements. For lab‑grown diamond products, in‑stock items are usually shipped within 3–5 days, while custom‑made orders take 7–15 days to ship.

What advantages do polycrystalline diamond compact (PDC), polycrystalline diamond (PCD), and polycrystalline cubic boron nitride (PCBN) inserts offer compared to similar products?

The company employs the world’s first 1,200-mm‑bore six‑face hydraulic press and advanced synthesis technology. Its products outperform comparable offerings by more than 20% in three key performance metrics—wear resistance, impact toughness, and high‑temperature stability—and boast a 25% advantage in dimensional accuracy. This enables a substantial increase in drill‑bit life and machining efficiency while reducing customers’ overall operating costs.

Which industries do your company’s products serve?

The company’s products are widely used in cutting-edge fields such as mining, geological exploration, oil drilling and production, jewelry and fine jewelry, precision machining, semiconductor thermal management, optical windows, and aerospace, serving multiple industries including energy exploration, high-end manufacturing, and consumer electronics.

What are your company’s main products?

The company focuses on research, development, and application across the entire spectrum of superhard materials, with its core business spanning two major segments: first, superhard composite materials, producing 3 million diamond‑based composite inserts annually, primarily including mining‑grade PDC, cutting‑tool PCD, cubic boron nitride PCBN, and specialized composites for oil and gas drilling; second, gem‑quality diamonds, encompassing colorless large single crystals, colored lab‑grown diamonds, and functional diamond single crystals, with the capability to synthesize lab‑grown diamonds up to 200 carats.

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Contact phone number

+86-373-8657779

Contact email

hnlcxcl@diamondhnlc.com

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Lab-Grown Diamonds (Loose Diamonds)

Solution

It serves core industrial sectors such as coalfield mining, geological exploration, oil extraction, and mechanical machining.

Mining sector

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