All equipment

As of 2019, GCM Industry and its affiliated companies have 5 advanced mining machine production bases and one production base under construction, with a total production area of 1,200,000 square meters, which can better meet more needs of global customers in the future.


Beginning in 1987, GCM industry has developed steadily and steadily in the field of mining machines, and has gradually formed a complete R&D, production, sales and service system.

Click the links below for detailed information about our areas of expertise and broad range of equipment offerings.

How Are Diamonds Mined And Extracted From the Ground

Largest man-made hole on Earth – The Kimberly open pit mine. At James Allen, every diamond sold is certified conflict-free and you get to see HD videos to visualize how each diamond looks like in real life. With more than 200,000+ GIA graded diamonds available, blows away the competition with their wide selections of loose ...

1,596 Rough Diamonds stock pictures and images - Getty Images

Native American/First Nations. Pacific Islander. Mixed Race Person. Multi-Ethnic Group. SPECIFIC PEOPLE {{}} ... Browse 1,596 rough diamonds stock photos and images available, or search for diamond mine or gold to find more great stock photos and pictures.


0.24ct HUGE NATURAL LIGHT FAINT PINK DIAMOND RAREST COLOR DIAMOND SPARKLING EARTH MINED DIAMOND!. WOW! Ultra Rare Huge 0.24 carats Size: 3.90x3.90x2.30 mm! Best Untreated Natural Light Faint Pink Diamond! This Diamond is Truly Dazzling and Rare Color in Natural diamonds!

Diamond – Official Minecraft Wiki

Diamond ore mined using an iron pickaxe or stronger drops a single diamond. If mined by any other tool, it drops nothing. If the pickaxe is enchanted with Fortune, it can drop an extra diamond per level of Fortune, allowing for a maximum of 4 with Fortune III.If the ore is mined using a pickaxe enchanted with Silk Touch, it drops an ore block rather than a diamond.

What does a raw diamond look like? - Quora

Jul 24, 2018· What does a raw diamond look like? Update Cancel. a d b y B H M D D e r m a l. Doctor: "Doing this every morning can snap back sagging skin". ... How are diamonds mined and extracted from the ground? ... Their is not a particular shape of a raw diamond. it always depend on atmosphere and the place where you find it.

Natural Mines | CubicCastles Wiki | Fandom

Natural Mines are public realms that are permanently scattered througout the Overworld. Anyone can mine for blocks or ores while inside, but nobody can build (besides the placement of bombs, candles or torches). Natural Mines are randomly generated and will regenerate after a period of time once players are absent from the mine. There are also cave mines, unvisible from the skymap, which can ...

Kunzite spodumene: The pink gemstone Kunzite information ...

Kunzite is a relatively recent gemstone, having been first discovered in the 20th century. It was first found in the pegmatites of Pala, California, in 1902, and is named after the famous mineralogist George F. Kunz who first identified it. Though it wasn't until the 1990's that this gemstone became a more mainstream gemstone, having been used only as a collectors gemstone prior to that time.

Topaz: The gemstone Topaz information and pictures

Topaz of all different colors are used in jewelry, in rings, earrings, necklaces, pendants, and bracelets. The blue, orange, and pink colors are most often cut as gemstones, and colorless Topaz is becoming increasingly popular as an inexpensive Diamond simulant. Gigantic gems and faceted spheres are cut from huge flawless crystals, and these make exquisite and exclusive collectors items.

Before and After: Pictures of Repaired and Recut Gems ...

It often makes sense to recut and repair gemstones. For an inexpensive gem, like a basic piece of quartz, the cut may account for virtually all its value.For a pricey gem that has seen better days, a great gem cutter — or lapidary — can really do wonders.

Sapphire Mining | A Guide To The World's Sapphire Mines

In this introduction to sapphire mining, follow the links to see where and how sapphires are mined. Explore the links for a better understanding of the process a rough takes from mine to gemstone, and enjoy a selection of pictures and video that feature the people and places of sapphire mining.

How Do You Identify Raw Diamonds? |

A raw diamond looks similar to the expertly cut stones adorning necklaces and rings. At first glance, a rough diamond resembles common quartz or calcite. Diamonds are famous for their hardness, however, and this characteristic is easy to test.

Brown diamonds - Wikipedia

Brown diamonds are the most common color variety of natural diamonds.In most mines, brown diamonds account for 15% of production. The brown color makes them less attractive as gemstones because of the reduced glimmer, and most are used for industrial purposes.

Rough diamonds - How diamonds look like before they are ...

Mar 01, 2018· In this video you see how diamonds look like right after they have been mined. Diamant Agentur - Your online jeweller and specialist for diamonds - Buy certified diamonds ...

How to Identify Uncut Rough (or Raw) Diamonds

You may read or hear about a lot of different methods to identify a real diamond. The reality is, however, that most of them are unreliable. There are many minerals that look like diamond and have very similar physical characteristics, and unless you are in an area where diamonds are mined, or you are a gemologist, you can never be sure that the transparent stone you've just found is the ...

Learn About Red Diamonds | Cape Town Diamond Museum

When a red diamond is retrieved from underground and light is allowed to pass through the irregular lattice, the unusual bending of the light causes the diamonds to reflect a ruby-like colour. Red diamonds look different in various lighting environments. They look best in daylight and candlelight and they look worst in fluorescent light.

Discussing the Identification of Rough Diamonds - Gemology

These gem quality diamonds amount to about 10-30% of all diamonds mined*. The rest of the diamonds mined are used for industrial purposes such as sand paper grit or drill bits. Gem quality rough diamonds can also be pink, blue, red, green, or yellow. These ìfancyî colors are extremely rare.

Diamond Dream Interpretation : Best Dream Meaning Analysis ...

White diamond in dreams suggest that you have been clouded by matters around you, you cannot look past the surface and find the truth about your surroundings. Perhaps people are hiding important information and data from your analysis. Pink Diamond Dreams of pink diamond suggests pure and sweet love. Green Diamonds

How to Identify an Uncut Rough Diamond | Sciencing

Diamonds form isometric crystals, have a specific gravity of 3.1–3.5, rank 10 on the Mohs Hardness Scale, stick to a grease table, and, in some cases, fluoresce under shortwave ultraviolet light. Correctly identifying an uncut rough diamond uses a combination of these characteristics.

Colored Diamonds: When imperfections create beauty

Colored Diamonds: Diamonds can occur in a variety of beautiful colors. Images in the wonderful collection of colored diamonds shown above are used with permission of IBD Fancy Colors LLC.They include from top left, going clockwise: a heart-shaped diamond with a Fancy Vivid pink color weighing 0.70 carats; a Fancy Vivid yellowish-orange pear-shaped diamond weighing 0.85 carats; a Fancy …

How to Identify Raw Gold | Sciencing

One of the ways to find raw gold begins with panning for it in creeks or rivers fed by eroded gold from mine or natural deposits in rock formations above the water sources. Placer gold, roughly 75-to-95 percent real gold comes in a variety of shapes and sizes, from small flakes to large bumpy nuggets.

DIAMONDS & Host Rocks

When you decide to prospect for diamonds, learn to recognize diamond and then watch your gold pan to see if you trap any of these gems. Diamond has a specific gravity of 3.5, and will concentrate with black sands in a gold pan. So when you are panning and you see a transparent to white crystal (or even better - a pink or blue crystal) in your pan in the middle of the black sands with distinct ...

What can I do to determine if an uncut rough stone is ...

Nov 19, 2015· If you are a complete novice rather consult an expert to do the evaluation for you. However two simple tests are reasonably reliable. Using an emery board, the one ladies file their nails with, file one of the faces of the supposed diamond. If it ...

Pink diamond - Wikipedia

Pink diamond is a type of diamond that has pink color. The source of their pink color is greatly debated in the gemological world but it is most commonly attributed to enormous additional pressure that these diamonds undergo during their formation.. Pink diamonds belong to a subcategory of diamonds called fancy color diamonds, the generic name for all diamonds that exhibit any sort of color.

Chromite: The only mineral ore of chromium metal

What is Chromite? Chromite is an oxide mineral composed of chromium, iron, and oxygen (FeCr 2 O 4).It is dark gray to black in color with a metallic to submetallic luster and a high specific gravity. It occurs in basic and ultrabasic igneous rocks and in the metamorphic and sedimentary rocks that are produced when chromite-bearing rocks are altered by heat or weathering.

How to Find Diamonds in the Ground: 5 Ways to Spot a Treasure

Large diamond prospectors, though, have failed to mine in this area as people who walked around the park got more diamonds than those who mined for it. The great part here is that you only have to pay $8 for adults and $5 dollars for kids 6-13 years in exchange for the chance to find diamonds as long as you know how to find diamonds in the ground!

Diamond Look-alike Comparison Chart - International Gem ...

Separating a diamond look-alike from the real thing is one of the biggest challenges a new gemologist faces. Diamonds and their simulants can share some optical and physical properties. However, two properties, specific gravity and birefringence, hold the key to distinguishing diamonds. In the chart below, you'll find common diamond look-alike stones and real diamonds arranged by specific ...

Morganite Gemstone Information - GemSelect

Morganite is the light pink to violet-pink variety of beryl.Since beryl is most famous for being the mineral group that green emerald belongs to, pink morganite is sometimes referred to as 'pink emerald'. Along with emerald, morganite is also related to blue aquamarine, golden beryl (heliodor), colorless goshenite and the rare red bixbite.Among the beryls, morganite is one of the rarest forms ...

What Do Raw Emeralds Look Like? | LEAFtv

Raw emeralds, like cut emeralds, are all green, but the shade of green varies from blue-green to pale yellow-green to a rich forest green. Like cut emeralds, raw emeralds can be transparent or translucent, a quality that is sometimes called clarity but in the gem trade is referred to as diaphaneity.