Marco Polo

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Refining Services

Refining Services

With over 30 years of experience, we have great knowledge and expertise in treating virtually any type of precious metal bearing material to ensure maximum return. You will find a degree of precision that is far more detailed than the average. You will find a degree of accommodation to the particular needs of each lot of your material that is unusual. And you will find an attention and advocacy for your interests that probably exists no place else.

Click here to view a slideshow of how scrap gold is refined

Click here to view a slideshow of how bench sweeps are refined

Click here to view final gold refining process and accent diamond removal.

Click here to view a slideshow of how silver scrap is refined

Click here to view a slideshow of how polishing & floor sweeps are refined

Click here to view the melting of gold sponge from refined powder to recognizable gold.

Casting Services
- Casting Services
  
  We cast jewelry and related items in a wide array of precious and non-precious metals to meet particular and unusual needs in colors, hardness and other properties. We are adept at working with and accommodating special needs for individual pieces or developing protocols to provide for the needs of larger programs. We will work closely with you to solve problems from customizing casting techniques to developing specialty alloys.
  Click here to view a slideshow of the entire casting process from original wax to finished casting.
Precious Metal Trading
- Precious Metal Trading
  
  We trade (buy, sell and swap) most of the common precious metal bullion coins and bars as well as handling and helping you with many lesser known and sometimes esoteric items. Whether it involves tiny quantities or hundreds of ounces, you will find that we take the time to answer all your questions about investing in and buying and selling precious metals so that you have clear and comprehensive knowledge upon which to make your own decision. We encourage you to contact us and spend as much time asking as many questions as you like to become fully informed. You will find us very friendly and helpful, and we feel you will become convinced that we always keep your interests foremost. We also provide precious metals in grain and sponge for industrial application and usage with some of the more esoteric metals often in stock and available immediately.
Jewelry Design & Production
- Jewelry Design & Production
  
  Through us you have available the expertise of the entire jewelry artisan community of New York for design and creation of jewelry and related items. Our expertise and assistance is available for the entire process from first conception to finished product or for any part or parts of the process. You will find that we have great ability in hearing and understanding what your needs are and helping you execute them with precision and excellence.
Stamping
- Stamping
  
  We have a wide array of common jewelry-type stamping patterns and can specialize their manufacture in terms of color, karat, hardness as well as thickness desired. Furthermore we develop stamping, die-striking and coining dies to meet individual needs and projects for our clients and then produce the item in the special metal desired. Our experience is broad and deep and you will find us a great resource for any project that may be assisted by stamping, die-striking or coining.
  Click here to view a slideshow the entire stamping process from raw gold to finished pieces
Die Striking
- Die Striking
  
  We have a wide array of common jewelry-type stamping patterns and can specialize their manufacture in terms of color, karat, hardness as well as thickness desired. Furthermore we develop stamping, die-striking and coining dies to meet individual needs and projects for our clients and then produce the item in the special metal desired. Our experience is broad and deep and you will find us a great resource for any project that may be assisted by stamping, die-striking or coining.
  Click here to view a slideshow of the entire Die-Striking process form raw gold to finished pieces
Coining
- Coining
  
  We have a wide array of common jewelry-type stamping patterns and can specialize their manufacture in terms of color, karat, hardness as well as thickness desired. Furthermore we develop stamping, die-striking and coining dies to meet individual needs and projects for our clients and then produce the item in the special metal desired. Our experience is broad and deep and you will find us a great resource for any project that may be assisted by stamping, die-striking or coining.
  Click here to view a slide show of the entire Coining process from raw gold to finished pieces

Mill Products

We custom fabricate many types of mill products in gold, silver and platinum alloys including sheet, wire, round wire, half-round wire, channel wire and rod. We have the ability and willingness to fabricate even tiny pieces in a particular alloy of a specified dimension to meet a specialized individual need.

Click here to view a slideshow of the entire process of making gold sheet from raw metal to finished sheet

Click here to view a slideshow of the entire process of making wire from raw metal to finished wire

Click here to view a slideshow of the entire process of making rod from raw metal to finished rod

Solder, Casting Grains & Alloys
- Solder, Casting Grains & Alloys
  
  We provide and/or fabricate to order a wide array of karat gold, silver and platinum casting grains, including some unusual alloys with unique and specialized properties. Karat gold and platinum solders are usually in stock and available even in very small quantities. Alloys to add to the pure metals are also available giving our customers the flexibility to produce their own casting grains. Whether your needs are very small or larger you will find us very accommodating.
Contact & Sign up
- Contact & Sign up
  
  Contact information for Marco Polo including directions.
Conversion Tables
- Conversion Tables
  
  Insightful tables and charts helpful in calculating weights, sizes and cost in precious metals fabrication.
Glossary
- Glossary
  
  A listing of commonly used terms in precious metals and precious metal trading. Definitions are presented to enable you to better understand the many terms used.
The people at Marco Polo
- The people at Marco Polo
  
  Learn more about the members of the Marco Polo team.
Check us out
- Check us out
  
  We realize trust and reliability are of utmost importance when dealing in precious metals. This page has been developed to enable you to do a "background check" on us to begin to get a sense of our rock-solid ethics and reputation. You will find here contact information for the New York State Attorney General's office, the New York City Department of Consumer Affairs, The Better Business Bureau as well as the two premier jewelry trade organizations of which we are long-time members in good standing: The Jewelers Board of Trade and The Manufacturing Jewelers and Suppliers of America. Feel free to contact any of these organizations to get a sense of who we are and the soundness of our firm.
Privacy
- Privacy
  
  Marco Polo The Gold Buyers. Inc. is committed to maintaining reasonable precautions to protect the privacy and security of our online visitors to this website.

sheet,wire,rod Sheet/Wire Gauge Karat/Finenses Troy, Avoir & Metric Raising & Lowering Karats Weight Equivalence Chart

In this section you will find are a number of very helpful charts that can be extremely helpful in calculating weights, sizes and cost in precious metals fabrication.

Sheet, Wire, Rod, Half Round Weight Table

Sheet Thickness	14K	SHEET 18K	Pt.	SS
in Inches	dwt./Sq.In.	dwt./Sq.In.	dwt./Sq.In.	dwt./Sq.In.


.010	1.4	1.7	1.9	1.1
.015	2.1	2.5	3.4	1.6
.020	2.8	3.3	4.5	2.2
.025	3.5	4.1	5.4	2.7
.030	4.1	4.9	6.7	3.3
.035	4.8	5.8	7.8	3.8
.040	5.5	6.6	8.8	4.4
.050	6.9	8.2	10.9	5.5
.060	8.3	9.9	13.4	6.6
.070	9.6	11.5	15.6	7.7
.080	11.0	13.2	17.8	8.8
.090	12.4	14.8	20.1	9.8
.100	13.8	16.4	22.9	10.9
.125	17.2	20.5	28.3	13.6
.160	22.0	26.3	35.6	17.5
.200	27.6	32.9	43.8	21.9

Metal Thickness	14K	WIRE 18K	Pt.	SS
in Inches	dwt./Ft.	dwt./Ft.	dwt./Ft.	dwt./Ft..


.010	.1	.14	.2	.08
.015	.3	.4	.5	.2
.018	.4	.5	.6	.3
.020	.5	.6	.8	.4
.025	.8	1.0	1.3	.7
.030	1.2	1.4	1.8	.9
.035	1.6	1.9	2.6	1.3
.040	2.1	2.5	3.2	1.6
.045	2.6	3.1	4.2	2.1
.050	3.3	3.9	4.8	2.8
.060	4.7	5.6	7.2	3.7
.065	6.0	7.1	9.7	4.2
.070	6.4	7.6	9.9	5.1
.080	8.3	9.9	13.3	6.6
.090	10.5	12.5	14.9	8.3
.100	13.0	15.5	18.2	10.3
.125	20.3	24.2	32.9	16.1
.160	33.2	39.6	53.8	26.5
.200	51.9	61.8	84.1	41.5

Square Rod

Half Round Wire

Flat Sizing Stock


Size	14K	18K	Pt
In Inches	dwt./Ft	dwt./Ft	dwt./Ft
.040	2.7	3.2	4.4
.050	4.1	4.9	6.6
.060	6.0	7.1	9.2
.070	8.1	9.6	12.1
.080	10.6	12.6	15.8
.090	13.4	15.9	20.6
.100	16.5	19.6	23.7
.125	25.8	30.7	41.2
.160	42.3	50.3	62.0
.200	63.4	75.4	100.0
.225	80.2	95.6	130.0
.240	91.2	108.5	135
.250	95.7	113.8	135


Dia.	14K
In Inches	dwt./Ft
.090	5.3
.110	7.9
.135	11.8
.160	16.6
.200	26.0


Dimensions	14K	18K	Pt
In Inches	dwt./Ft	dwt./Ft	dwt./Ft
.040 x .080	5.3	6.4	7.7
.040 x .120	7.9	9.5	12.9
.040 x .160	11.8	14.2	19.2
.060 x .080	7.9	9.5	12.9
.060 x .120	12.0	14.4	19.0
.060 x .160	15.9	19.1	25.2
.060 x .240	23.9	28.7	39.0
.080 x .120	15.8	19.0	25.8
.080 x .160	20.3	24.4	33.0
.080 x .240	31.7	38.0	58.0

Important Information: To help the government fight the funding of terrorism and money laundering activities,
Federal law requires all dealers in precious metals to obtain, verify, and record information
that identifies each person who opens an account.

What this means for you: If an individual, we will ask for your name, address, date of birth and other information
that will allow us to identify you. We may also ask to see your driver's license or other identifying
documents. If a company, we will ask for identifying information, to include government
registration numbers and documents, charter at formation, beneficial ownership and other information.

We think a personal conversation is best, so give us a call during normal
business hours at (800) 543-3420 or (212) 840-3286.
If you prefer email, contact us at info@marcopolopm.com or fax 1-212-768-4026 .

Marco Polo Precious Metals | 38 West 48th Street, New York, NY 10036

Business Hours: 8:30am - 6:30pm Mon.-Fri. EST
Copyright © 2020 Marco Polo Precious Metals. All rights reserved.

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