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Please inform us of the intended use, and we will recommend the suitable size and grade. We also provide samples for testing before bulk arrangement.

2.8mm 3.2mm Diamond Hpht Yellow Rough Diamond Raw Diamond

Name: 2.8mm 3.2mm Diamond Hpht Yellow Rough Diamond Raw Diamond
Brand: Chenguang Machinery & Electric Equipment Co., Ltd.
SKU: 1937111582

Hunan, ChinaChenguang Machinery & Electric Equipment Co., Ltd.

US$1.00-39.00

1 carat

Sample price:US$5.00/carat.Request sample

Product profile

Customization

Available

Type

Synthetic Diamond

Classification of Diamond

Hpht Lab Made

Model NO.

JSBD

Characteristic

High Hardness

Application

Abrasive, Dresser, Jewellery

Color

Yellow, Fancy Yellow

Hardness

Moh's 10

Shape

Round, Octahedron

Feature

Fancy Yellow, Light Yellow

Size

1.0mm to 3.6mm

Transport Package

Carton

Specification

JSBD9907-9910

Origin

Changsha, Hunan

Production Capacity

10000 CT / Month

Key features

HPHT Lab-Grown Technology: Synthetic diamonds created in lab with same physical and chemical properties as natural diamonds.

Mohs Hardness 10: Maximum hardness rating ensuring superior durability for industrial and jewelry applications.

Multiple Color Options: Available in Yellow, Fancy Yellow, Light Yellow, Dark Yellow, and Black variations.

Wide Size Range: Sizes available from 1.0mm to 3.6mm with a margin of error of plus or minus 0.1mm.

Four Quality Grades: Grades JSBD9907 to JSBD9910 offer options from premium regular crystals to cost-effective irregular shapes.

Versatile Applications: Ideal for abrasive tools, dressers, jewelry, sawing granite, and geological drilling.

Fast Delivery: Standard delivery time is 5-7 days after deposit confirmation.

Sample Testing Available: Small samples provided for testing before placing bulk orders.

Company profile

Chenguang Machinery & Electric Equipment Co., Ltd.

Hunan, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2010-12-01Nearest Port: Changsha. Guangzhou, Shanghai, ShenzhenAverage Response Time: ≤18hTerms of Payment: T/T, PayPal, Western Union, etc.International Commercial Terms(Incoterms): FOB, CFR, CIF, EXW

AI-Powered supplier vetting

SummaryChenguang Machinery & Electric Equipment Co., Ltd. is a China-based limited trading company located in Changsha, Hunan, with its factory reported in Furong District. Its stated business covers development, production, and marketing of ultra-hard materials, including synthetic diamond, diamond drill bits, diamond cutting discs, and PDC cutters. The supplier reports ISO 9001 and GMP certifications, more than 10 production lines, 6–10 R&D engineers, and 6–10 quality-control staff. It has self-operated import/export rights and has exported since 2010, with exports representing 31%–40% of total sales. Recent trade records show transactions involving synthetic diamonds and inserts with a buyer in Mexico, but the limited number of disclosed transactions does not establish a broad customer base. Evidence is insufficient to assess after-sales service, customization, and financial credibility.

Supplier typeThe supplier is identified as a trading company in Changsha and as both a trading company and manufacturer/factory in the company profile. Its stated business includes development, production, and marketing of ultra-hard materials, indicating a hybrid trading-and-manufacturing profile.

CertificationsThe supplier reports holding ISO 9001 and GMP management-system certifications. These certifications provide explicit evidence of formal quality and manufacturing management systems, although the slices do not provide certificate numbers, validity dates, or scope.

R&D capabilityThe company describes itself as specialized in the development of ultra-hard materials and reports 6–10 R&D engineers. Its product keywords include synthetic diamond and PDC cutters, supporting an identifiable R&D orientation, but no patents, new-product records, or technical performance data are provided.

Production capacityThe supplier states that it develops and produces ultra-hard materials, operates more than 10 production lines, and has annual output information listing 10,000,000 units for lab diamond and other products. The reported manufacturing infrastructure and output data explicitly support production capability, although the exact product allocation and capacity verification are not provided.

Client casesTrade records show three recent product categories—Inserts, Synthetic Diamond, and Synthetic Diamonds—with transactions involving Mexico and the same named buyer; the disclosed transaction counts are 2, 3, and 2 respectively. These records evidence some recent commercial activity, but the limited buyer and country coverage does not establish a broad or diversified customer portfolio.

Product Q&A

Q:What is the hardness of these synthetic diamonds?

The synthetic diamonds have a Mohs hardness of 10 and a hardness rating of 7000-8000.

Q:What sizes are available for the rough diamonds?

Available sizes range from 1.0mm to 3.6mm, with a specific size range up to 8.0mm and a margin of error of plus or minus 0.1mm.

Q:What are the different quality grades offered?

We offer four grades: JSBD9907 (best quality, regular shape), JSBD9908 (best-selling, regular shape), JSBD9909 (comparatively regular), and JSBD9910 (irregular, cheapest).

Q:How long does it take to deliver the order?

Delivery time is usually 5-7 days after the deposit is confirmed. Peak and off-peak season lead times are within 15 workdays.

Q:Can I get a sample before placing a bulk order?

Yes, we provide small samples for your test. If the sample test succeeds, we can arrange the needed goods.