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Gem Resources
PO Box 62006
Minneapolis, MN 55426

Phone: (612) 664-0252
Toll-Free: (800) 588-8515
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Natural Cabochons

March 2019

Cubic Zirconia Pink Checkerboard Top

Metal Clay, safe to fire.

Test Results, Silver 1200F-1HR, Silver 1475F-1HR, Bronze 1525F-2HR, Copper 1778F-30min. Safe to use torch and safe to use carbon.

3 mm	Regular price 12 pieces $6.00	Sale price 24 pieces $7.00
4 mm	Regular price 12 pieces $7.00	Sale price 24 pieces $8.00
5 mm	Regular price 12 pieces $9.00	Sale price 24 pieces $10.00
6 mm	Regular price 6 pieces $7.00	Sale price 12 pieces $8.00

Cubic Zirconia Purple Checkerboard Top

Metal Clay, safe to fire.

Test Results, Silver 1200F-1HR, Silver 1475F-1HR, Bronze 1525F-2HR, Copper 1778F-30min. Safe to use torch and safe to use carbon.

3 mm	Regular price 12 pieces $6.00	Sale price 24 pieces $7.00
4 mm	Regular price 12 pieces $7.00	Sale price 24 pieces $8.00
5 mm	Regular price 12 pieces $9.00	Sale price 24 pieces $10.00
6 mm	Regular price 6 pieces $7.00	Sale price 12 pieces $8.00

Cubic Zirconia Peridot Checkerboard Top

Metal Clay, safe to fire.

Test Results, Silver 1200F-1HR, Silver 1475F-1HR, Bronze 1525F-2HR, Copper 1778F-30min. Safe to use torch and safe to use carbon.

3 mm	Regular price 12 pieces $6.00	Sale price 24 pieces $7.00
4 mm	Regular price 12 pieces $7.00	Sale price 24 pieces $8.00
5 mm	Regular price 12 pieces $9.00	Sale price 24 pieces $10.00
6 mm	Regular price 6 pieces $7.00	Sale price 12 pieces $8.00

Cubic Zirconia Champagne Checkerboard Top

Metal Clay, safe to fire.

Test Results, Silver 1200F-1HR, Silver 1475F-1HR, Bronze 1525F-2HR, Copper 1778F-30min. Safe to use torch and safe to use carbon.

3 mm	Regular price 12 pieces $6.00	Sale price 24 pieces $7.00
4 mm	Regular price 12 pieces $7.00	Sale price 24 pieces $8.00
5 mm	Regular price 12 pieces $9.00	Sale price 24 pieces $10.00
6 mm	Regular price 6 pieces $7.00	Sale price 12 pieces $8.00

Lab Spinel Zircon Checkerboard Top

Metal Clay, safe to fire.

Test Results, Silver 1200F-1HR, Silver 1475F-1HR, Bronze 1525F-2HR, Copper 1778F-30min. Safe to use torch and safe to use carbon.

3 mm	Regular price 6 pieces $7.00	Sale price 12 pieces $8.00
4 mm	Regular price 6 pieces $7.00	Sale price 12 pieces $8.00
5 mm	Regular price 4 pieces $8.00	Sale price 8 pieces $9.00
6 mm	Regular price 2 pieces $6.00	Sale price 4 pieces $7.00

Lab Spinel Sapphire Checkerboard Top

Metal Clay, safe to fire.

Test Results, Silver 1200F-1HR, Silver 1475F-1HR, Bronze 1525F-2HR, Copper 1778F-30min. Safe to use torch and safe to use carbon.

3 mm	Regular price 6 pieces $7.00	Sale price 12 pieces $8.00
4 mm	Regular price 6 pieces $9.00	Sale price 12 pieces $10.00
5 mm	Regular price 4 pieces $8.00	Sale price 8 pieces $9.00
6 mm	Regular price 2 pieces $6.00	Sale price 4 pieces $7.00

Lab Corundum Ruby Checkerboard Top

Metal Clay, safe to fire.

Test Results, Silver 1200F-1HR, Silver 1475F-1HR, Bronze 1525F-2HR, Copper 1778F-30min. Safe to use torch and safe to use carbon.

3 mm	Regular price 6 pieces $7.00	Sale price 12 pieces $8.00
4 mm	Regular price 6 pieces $9.00	Sale price 12 pieces $10.00
5 mm	Regular price 4 pieces $8.00	Sale price 8 pieces $9.00
6 mm	Regular price 2 pieces $6.00	Sale price 4 pieces $7.00

Emerald Green Nano - Safe to Fire

Metal Clay Test, safe to fire.

Nano gemstones is a glass-ceramic material with nano size spinel crystals.
Density: 3-3.3
Luster: RI-1.61-1.64
Melting temperature: 2900 to 3100 F
High thermal shock resistance make it ideal for wax-casting and metal clay.

2 mm	Regular price 50 pieces $12.00	Sale price 100 pieces $13.00
3 mm	Regular price 12 pieces $7.00	Sale price 24 pieces $8.00
4 mm	Regular price 6 pieces $8.00	Sale price 12 pieces $9.00
5 mm	Regular price 6 pieces $10.00	Sale price 12 pieces $11.00
6 mm	Regular price 4 pieces $12.00	Sale price 8 pieces $13.00

Pink Opal Nano - Safe to Fire

Metal Clay Test, safe to fire.

Nano gemstones is a glass-ceramic material with nano size spinel crystals.
Density: 3-3.3
Luster: RI-1.61-1.64
Melting temperature: 2900 to 3100 F
High thermal shock resistance make it ideal for wax-casting and metal clay.

2 mm	Regular price 50 pieces $12.00	Sale price 100 pieces $13.00
3 mm	Regular price 12 pieces $7.00	Sale price 24 pieces $8.00
4 mm	Regular price 6 pieces $8.00	Sale price 12 pieces $9.00
5 mm	Regular price 6 pieces $10.00	Sale price 12 pieces $11.00
6 mm	Regular price 4 pieces $12.00	Sale price 8 pieces $13.00

Black Nano - Safe to Fire

Metal Clay Test, safe to fire.

Nano gemstones is a glass-ceramic material with nano size spinel crystals.
Density: 3-3.3
Luster: RI-1.61-1.64
Melting temperature: 2900 to 3100 F
High thermal shock resistance make it ideal for wax-casting and metal clay.

2 mm	Regular price 100 pieces $9.00	Sale price 200 pieces $10.00
3 mm	Regular price 25 pieces $8.00	Sale price 50 pieces $9.00
4 mm	Regular price 20 pieces $12.00	Sale price 40 pieces $13.00
5 mm	Regular price 6 pieces $8.00	Sale price 12 pieces $9.00
6 mm	Regular price 6 pieces $10.00	Sale price 12 pieces $11.00

Cubic Zirconia White Princess - Overstock

Metal Clay, safe to fire.

Test Results, Silver 1200F-1HR, Silver 1475F-1HR, Bronze 1525F-2HR, Copper 1778F-30min. Safe to use torch and safe to use carbon.

3 x 3 mm	Regular price 20 pieces $8.00	Sale price 50 pieces $9.00
4 x 4 mm	Regular price 20 pieces $13.00	Sale price 50 pieces $14.00
5 x 5 mm	Regular price 10 pieces $8.00	Sale price 25 pieces $9.00
6 x 6 mm	Regular price 6 pieces $7.00	Sale price 15 pieces $8.00

Closeout Gilson Opal Oval Cabochons - Safe to Fire

Lab Created Opal
Metal Clay firing test results; Silver 1200F-1HR-OK, Silver 1475F-1HR-OK, Silver 1650F-2HR OK, Bronze 1525F-2HR-OK, Copper 1778F-30min-OK
Fired in carbon and made sure not to open the kiln until completely cooled. Came out great with a slight haze, but they looked great. If you cool down too quickly they crack. But, if you put a little super glue over each one after firing they will look fine.

5 x 3 mm	Regular price $7.00 each	Closeout 4 pieces $7.00
6 x 4 mm	Regular price $12.00 each	Closeout 2 pieces $6.00
7 x 5 mm	Regular price $23.00 each	Closeout $5.00

Sunstone Cab Round

Refractive Index: 1.560 - 1.572
Hardness: 6 - 6.5
Specific Gravity: 2.69 - 2.72
Treatment: None
Care: Avoid harsh chemicals and never clean with ultrasonically or steam clean.

Safe to fire in metal clay
1200 degrees for 30 Minutes

3 mm	Regular price 2 pieces $6.00	Sale price 4 pieces $7.00
4 mm	Regular price 2 pieces $7.00	Sale price 4 pieces $8.00
5 mm	Regular price 2 pieces $9.00	Sale price 4 pieces $10.00

Green Amethyst Cab Round

Hardness: 7
Specific Gravity: 2.66
Species: Quartz
Treatment: Irradiated and heat-treated
Care: Wash with warm, soapy water. Avoid harsh detergents. Ultrasonic cleaning is usually safe. Never steam clean.

6 mm	Regular price 2 pieces $9.00	Sale price 4 pieces $10.00
7 mm	Regular price $7.00 each	Sale price 2 pieces $8.00
8 mm	Regular price $10.00 each	Sale price 2 pieces $11.00
10 mm	Regular price $30.00 each	Sale price $16.00 each
12 mm	Regular price $49.00 each	Sale price $25.00 each

Green Amethyst Cab Square with Point

Hardness: 7
Specific Gravity: 2.66
Species: Quartz
Treatment: Irradiated and heat-treated
Care: Wash with warm, soapy water. Avoid harsh detergents. Ultrasonic cleaning is usually safe. Never steam clean.

5 x 5 mm	Regular price 2 pieces $6.00	Sale price 4 pieces $7.00
6 x 6 mm	Regular price $5.00 each	Sale price 2 pieces $6.00
8 x 8 mm	Regular price $11.00 each	Sale price 2 pieces $12.00

Green Amethyst Cab Trillion

4 x 4 mm	Regular price 4 pieces $5.00	Sale price 8 pieces $6.00
5 x 5 mm	Regular price 2 pieces $5.00	Sale price 4 pieces $6.00
6 x 6 mm	Regular price 2 pieces $9.00	Sale price 4 pieces $10.00
7 x 7 mm	Regular price $10.00 each	Sale price 2 pieces $11.00
8 x 8 mm	Regular price $11.00 each	Sale price 2 pieces $12.00
10 x 10 mm	Regular price $20.00 each	Sale price $11.00 each
12 x 12 mm	Regular price $30.00 each	Sale price $16.00 each

Green Aventurine Cab Round

Mohs hardness: 7
Species: Quartzite
Refractive index: 1.54-1.55
Specific gravity: 2.63-2.65
Treatment: None

Care: Clean with warm, soapy water. Ultrasonic and steam cleaning are usually safe

6 mm	Regular price 4 pieces $8.00	Sale price 8 pieces $9.00
8 mm	Regular price 2 pieces $9.00	Sale price 4 pieces $10.00
10 mm	Regular price $7.00 each	Sale price 2 pieces $8.00
12 mm	Regular price $13.00 each	Sale price 2 pieces $14.00

Peridot Cab Round

Refraction Index: 1.635
Hardness: 7.0
Specific Gravity: 3.3 - 3.4
Species: Olivine
Treatment: None
Heat Sensitivity: None
Care: Wash with soapy water. Avoid harsh detergents. Never clean ultrasonically or steam clean.

Metal Clay, safe to fire.
Firing test results; Silver 1200F-1HR-OK, Silver 1475F-1HR metallic, Silver 1650F-2HR Metallic, Bronze 1525F-2HR OK, Copper 1778F-30min OK. Safe to torch fire. Fire in carbon to avoid metallic coating.

3 mm	Regular price 6 pieces $7.00	Sale price 12 pieces $8.00
4 mm	Regular price 4 pieces $6.00	Sale price 8 pieces $7.00
5 mm	Regular price 2 pieces $8.00	Sale price 4 pieces $9.00
7 mm	Regular price $30.00 each	Sale price $16.00 each
8 mm	Regular price $89.00 each	Sale price $45.00 each

Peridot Cab Trillion with Point

Refraction Index: 1.635
Hardness: 7.0
Specific Gravity: 3.3 - 3.4
Species: Olivine
Treatment: None
Heat Sensitivity: None
Care: Wash with soapy water. Avoid harsh detergents. Never clean ultrasonically or steam clean.

Metal Clay, safe to fire.
Firing test results; Silver 1200F-1HR-OK, Silver 1475F-1HR metallic, Silver 1650F-2HR Metallic, Bronze 1525F-2HR OK, Copper 1778F-30min OK. Safe to torch fire. Fire in carbon to avoid metallic coating.

4 x 4 mm	Regular price 2 pieces $5.00	Sale price 4 pieces $6.00
5 x 5 mm	Regular price $7.00 each	Sale price 2 pieces $8.00
6 x 6 mm	Regular price $13.00 each	Sale price 2 pieces $14.00

Prehnite Cab Oval

Color: Yellow Green, some inclusions
Hardness: 6 - 6.5
Species: Silicate
Treatment: None
Care: Wash with mild soap and water. Never steam or ultrasonically clean.

16 x 12 mm	Regular price $20.00 each	Sale price $10.00 each
18 x 13 mm	Regular price $40.00 each	Sale price $20.00 each

Prehnite Cab Round

Color: Yellow Green, some inclusions
Hardness: 6 - 6.5
Species: Silicate
Treatment: None
Care: Wash with mild soap and water. Never steam or ultrasonically clean.

8 mm	Regular price $7.00 each	Sale price 2 pieces $8.00
10 mm	Regular price $12.00 each	Sale price 2 pieces $13.00
12 mm	Regular price $21.00 each	Sale price $11.00 each
15 mm	Regular price $38.00 each	Sale price $19.00 each

Hessonite Garnet Cab Round

Refraction Index: 1.73-1.76
Hardness: 7.0-7.5
Specific Gravity: 3.65-3.87
Treatment: None
Care: Wash with soapy water. Avoid harsh detergents. Never clean ultrasonically or steam clean.

Metal Clay, safe to fire.
Test results Silver Carbon Fire at 1470�F for 30 min, Fire in carbon to avoid metallic coating.

3 mm	Regular price 4 pieces $9.00	Sale price 8 pieces $10.00
5 mm	Regular price $6.00 each	Sale price 2 pieces $7.00
6 mm	Regular price $10.00 each	Sale price 2 pieces $11.00
8 mm	Regular price $18.00 each	Sale price $10.00 each

Rhodolite Garnet Cab Round

Refraction Index: 1.73-1.76
Hardness: 7.0-7.5
Specific Gravity: 3.65-3.87
Treatment: None
Care: Wash with soapy water. Avoid harsh detergents. Never clean ultrasonically or steam clean.

Metal Clay, safe to fire.
Test results Silver Carbon Fire at 1470�F for 30 min, Fire in carbon to avoid metallic coating.

4 mm	Regular price 2 pieces $9.00	Sale price 4 pieces $10.00
5 mm	Regular price $14.00 each	Sale price 2 pieces $15.00

Orissa Garnet Cab Round

Refraction Index: 1.73-1.76
Hardness: 7.0-7.5
Specific Gravity: 3.65-3.87
Treatment: None
Care: Wash with soapy water. Avoid harsh detergents. Never clean ultrasonically or steam clean.

Metal Clay, safe to fire.
Test results Silver 1200F-1HR OK, Silver 1475F-1HR Metallic, Silver 1650F-2HR Metallic, Bronze 1525F-2HR OK, and Copper 1778F-30 min OK, Fire in carbon to avoid metallic coating.

2 mm	Regular price 12 pieces $8.00	Sale price 24 pieces $9.00
3 mm	Regular price 6 pieces $7.00	Sale price 12 pieces $8.00
4 mm	Regular price 2 pieces $5.00	Sale price 4 pieces $6.00
5 mm	Regular price 2 pieces $9.00	Sale price 4 pieces $10.00
6 mm	Regular price $7.00 each	Sale price 2 pieces $8.00
8 mm	Regular price $25.00 each	Sale price $13.00 each
10 mm	Regular price $56.00 each	Sale price $28.00 each

Orissa Garnet Cab Trillion

efraction Index: 1.73-1.76
Hardness: 7.0-7.5
Specific Gravity: 3.65-3.87
Treatment: None
Care: Wash with soapy water. Avoid harsh detergents. Never clean ultrasonically or steam clean.

Metal Clay, safe to fire.
Test results Silver 1200F-1HR OK, Silver 1475F-1HR Metallic, Silver 1650F-2HR Metallic, Bronze 1525F-2HR OK, and Copper 1778F-30 min OK, Fire in carbon to avoid metallic coating.

3 x 3 mm	Regular price 6 pieces $7.00	Sale price 12 pieces $8.00
4 x 4 mm	Regular price 4 pieces $9.00	Sale price 8 pieces $10.00
5 x 5 mm	Regular price 2 pieces $7.00	Sale price 4 pieces $8.00
6 x 6 mm	Regular price $6.00 each	Sale price 2 pieces $7.00

Orissa Garnet Cab Square

efraction Index: 1.73-1.76
Hardness: 7.0-7.5
Specific Gravity: 3.65-3.87
Treatment: None
Care: Wash with soapy water. Avoid harsh detergents. Never clean ultrasonically or steam clean.

Metal Clay, safe to fire.
Test results Silver 1200F-1HR OK, Silver 1475F-1HR Metallic, Silver 1650F-2HR Metallic, Bronze 1525F-2HR OK, and Copper 1778F-30 min OK, Fire in carbon to avoid metallic coating.

4 x 4 mm	Regular price 2 pieces $6.00	Sale price 4 pieces $7.00
5 x 5 mm	Regular price $5.00 each	Sale price 2 pieces $6.00
6 x 6 mm	Regular price $9.00 each	Sale price 2 pieces $10.00

Brazilian Amazonite Cab Round

Refraction Index: 1.522-1.530
Hardness: 6 to 6.5
Specific Gravity: 2.56-2.58
Species: Tectosilicate
Treatment: None
Care: Usually safe in ultrasonic cleaning. Never steam clean.

6 mm	Regular price 2 pieces $5.00	Sale price 4 pieces $6.00
8 mm	Regular price 2 pieces $6.00	Sale price 4 pieces $7.00
10 mm	Regular price 2 pieces $7.00	Sale price 4 pieces $8.00

Lemon Quartz Cab Round

Hardness: 7
Specific Gravity: 2.66
Species: Quartz
Treatment: Irradiated and heat-treated
Care: Wash with warm, soapy water. Avoid harsh detergents. Ultrasonic cleaning is usually safe. Never steam clean.

5 mm	Regular price 2 pieces $5.00	Sale price 4 pieces $6.00
7 mm	Regular price $6.00 each	Sale price 2 pieces $7.00
8 mm	Regular price $8.00 each	Sale price 2 pieces $9.00
10 mm	Regular price $17.00 each	Sale price $9.00 each

Lemon Quartz Cab Oval

Hardness: 7
Specific Gravity: 2.66
Species: Quartz
Treatment: Irradiated and heat-treated
Care: Wash with warm, soapy water. Avoid harsh detergents. Ultrasonic cleaning is usually safe. Never steam clean.

6 x 4 mm	Regular price 2 pieces $5.00	Sale price 4 pieces $6.00
7 x 5 mm	Regular price 2 pieces $7.00	Sale price 4 pieces $8.00
8 x 6 mm	Regular price $6.00 each	Sale price 2 pieces $7.00
10 x 8 mm	Regular price $11.00 each	Sale price 2 pieces $12.00
12 x 10 mm	Regular price $22.00 each	Sale price $11.00 each

Lemon Quartz Cab Square

Hardness: 7
Specific Gravity: 2.66
Species: Quartz
Treatment: Irradiated and heat-treated
Care: Wash with warm, soapy water. Avoid harsh detergents. Ultrasonic cleaning is usually safe. Never steam clean.

4 x 4 mm	Regular price 4 pieces $8.00	Sale price 8 pieces $9.00
5 x 5 mm	Regular price 2 pieces $8.00	Sale price 4 pieces $9.00
6 x 6 mm	Regular price $6.00 each	Sale price 2 pieces $7.00
7 x 7 mm	Regular price $8.00 each	Sale price 2 pieces $9.00
8 x 8 mm	Regular price $16.00 each	Sale price $8.00 each
10 x 10 mm	Regular price $33.00 each	Sale price $17.00 each
12 x 12 mm	Regular price $55.00 each	Sale price $27.00 each