American Cut Gems and Masterpiece Collective Gems

Name: Natural Tourmaline, Congo 4.47 Ct TW pair
SKU: W6522
Price: 6705.00 USD
Availability: InStock

Showing 41–50 of 113 results

$920.00

Price Per Carat

$647.89

- Item Number
- W6571
- Gemstone
- Dragon Garnet – Color Change Fluorescent Chromium-Vanadium Malaya
- Origin
- Africa
- Weight
- 1.42 ct
- Dimension (mm)
- 7.7 x 5.3 x 4.7
- Calibrated Size
- No
- Type of Cut
- Modified MARQUISE
- Cutter
- faceted by Masterpiece Collective artist Michael Donovan – USA
- Color
- as photographed / grade 1 – stone changes color to extremely bright Fire Neon Red under 395 UV
- Clarity
- - F
  - VVS1
  - VVS2
  - VS1
  - VS2
  - SI1
  - SI2
  - P1
  - P2
- Treatment
- None
- Sheen/Schiller/Silk intensity
- - None
  - Very Low
  - Low
  - Low-Medium
  - Medium
  - Medium-Strong
  - Strong
  - Very Strong
- Tone / Saturation
- - Colorless
  - Very Very Light
  - Very Light
  - Light
  - Light-Medium
  - Medium
  - Medium Deep
  - Deep
  - Very Deep
  - Near Blackish
- Investment potential
- - 10
  - 9
  - 8
  - 7
  - 6
  - 5
  - 4
  - 3
  - 2
  - 1
- Rarity
- - 10
  - 9
  - 8
  - 7
  - 6
  - 5
  - 4
  - 3
  - 2
  - 1
- Note
- VIDEO on a hand: https://www.youtube.com/shorts/bCNKsl6X-hQ

* 1.0 ct = 0.2 gr ** Images were taken under open daylight (6,500K), for color change gems additionally under iridescent light source (2700K)

$1,620.00

Price Per Carat

$746.54

- Item Number
- W6673
- Gemstone
- Dragon Garnet – Color Change Fluorescent Chromium-Vanadium Malaya
- Origin
- Africa
- Weight
- 2.17 ct
- Dimension (mm)
- 7.9 x 7.8 x 5.4
- Calibrated Size
- Yes
- Type of Cut
- Custom Designed TRIANGLE
- Cutter
- faceted by Masterpiece Collective artist Chen Xue – USA
- Color
- as photographed / grade 2 – stone changes color to Raspberry Pink-Red under 395 UV
- Clarity
- - F
  - VVS1
  - VVS2
  - VS1
  - VS2
  - SI1
  - SI2
  - P1
  - P2
- Clarity
- Thin malaya needle inclusions visible under close inspection
- Treatment
- None
- Sheen/Schiller/Silk intensity
- - None
  - Very Low
  - Low
  - Low-Medium
  - Medium
  - Medium-Strong
  - Strong
  - Very Strong
- Tone / Saturation
- - Colorless
  - Very Very Light
  - Very Light
  - Light
  - Light-Medium
  - Medium
  - Medium Deep
  - Deep
  - Very Deep
  - Near Blackish
- Investment potential
- - 10
  - 9
  - 8
  - 7
  - 6
  - 5
  - 4
  - 3
  - 2
  - 1
- Rarity
- - 10
  - 9
  - 8
  - 7
  - 6
  - 5
  - 4
  - 3
  - 2
  - 1
- Note
- VIDEO: https://www.youtube.com/shorts/CeZDDJIbkyo

* 1.0 ct = 0.2 gr ** Images were taken under open daylight (6,500K), for color change gems additionally under iridescent light source (2700K)

$230.00

Price Per Carat

$61.99

- Item Number
- 21860
- Gemstone
- Walnut-Gold Oregon Sunstone
- Origin
- PANA Mine, Southern Oregon, USA
- Weight
- 3.71 ct
- Dimension (mm)
- 12.8 x 7.2 x 4.3
- Calibrated Size
- No
- Type of Cut
- Custom Designed PENDELOQUE
- Cutter
- Thomas Hunsinger GQG Lapidary-USA
- Clarity
- - F
  - VVS1
  - VVS2
  - VS1
  - VS2
  - SI1
  - SI2
  - P1
  - P2
- Treatment
- None
- Sheen/Schiller/Silk intensity
- - None
  - Very Low
  - Low
  - Low-Medium
  - Medium
  - Medium-Strong
  - Strong
  - Very Strong
- Tone / Saturation
- - Colorless
  - Very Very Light
  - Very Light
  - Light
  - Light-Medium
  - Medium
  - Medium Deep
  - Deep
  - Very Deep
  - Near Blackish
- Note
- VIDEO: https://www.youtube.com/shorts/5RSW-WHR0cA

* 1.0 ct = 0.2 gr ** Images were taken under open daylight (6,500K), for color change gems additionally under iridescent light source (2700K)

$890.00

Price Per Carat

$80.54

- Item Number
- W7520
- Gemstone
- Goshenite
- Origin
- Mozambique
- Weight
- 11.05 ct
- Dimension (mm)
- 15.7 x 15.0 x 9.7
- Calibrated Size
- No
- Type of Cut
- Custom Designed Shield
- Cutter
- cut by Masterpiece Collective artist Darryl Alexander-USA
- Color
- Water Clear-Colorless
- Clarity
- - F
  - VVS1
  - VVS2
  - VS1
  - VS2
  - SI1
  - SI2
  - P1
  - P2
- Treatment
- None
- Sheen/Schiller/Silk intensity
- - None
  - Very Low
  - Low
  - Low-Medium
  - Medium
  - Medium-Strong
  - Strong
  - Very Strong
- Tone / Saturation
- - Colorless
  - Very Very Light
  - Very Light
  - Light
  - Light-Medium
  - Medium
  - Medium Deep
  - Deep
  - Very Deep
  - Near Blackish
- Note
- VIDEO: https://www.youtube.com/shorts/fbjpdwqWSsk

* 1.0 ct = 0.2 gr ** Images were taken under open daylight (6,500K), for color change gems additionally under iridescent light source (2700K)

$7,800.00

Price Per Carat

$297.60

- Item Number
- W4131 / C100
- Gemstone
- Green Tourmaline
- Origin
- Kenya
- Weight
- 26.21 ct
- Dimension (mm)
- 24.06 x 12.93 x 12.26 mm
- Calibrated Size
- No
- Type of Cut
- Modified OCTAGON “Shockwave”
- Cutter
- Loren Brown – USA. Commission sale on behalf Loren Brown. This gemstone will be shipped by the artist Loren Brown directly from his place in Texas.
- Color
- Blue-Green and Yellowish-Green
- Clarity
- - F
  - VVS1
  - VVS2
  - VS1
  - VS2
  - SI1
  - SI2
  - P1
  - P2
- Clarity
- SI1- slightly included, can see with naked eye
- Treatment
- None
- Sheen/Schiller/Silk intensity
- - None
  - Very Low
  - Low
  - Low-Medium
  - Medium
  - Medium-Strong
  - Strong
  - Very Strong
- Tone / Saturation
- - Colorless
  - Very Very Light
  - Very Light
  - Light
  - Light-Medium
  - Medium
  - Medium Deep
  - Deep
  - Very Deep
  - Near Blackish
- Current market value
- - 10
  - 9
  - 8
  - 7
  - 6
  - 5
  - 4
  - 3
  - 2
  - 1
- Investment potential
- - 10
  - 9
  - 8
  - 7
  - 6
  - 5
  - 4
  - 3
  - 2
  - 1
- Rarity
- - 10
  - 9
  - 8
  - 7
  - 6
  - 5
  - 4
  - 3
  - 2
  - 1
- Note
- Commission sale on behalf Loren Brown. Ravenstein Gem Co. doesn't carry any responsibility when it comes to final price, quality, exchanges etc.

* 1.0 ct = 0.2 gr ** Images were taken under open daylight (6,500K), for color change gems additionally under iridescent light source (2700K)

$470.00

Price Per Carat

$319.73

- Item Number
- W5914
- Gemstone
- Imperial Garnet
- Origin
- Tanzania, Africa
- Weight
- 1.47 ct
- Dimension (mm)
- 6.5 mm Diameter x 4.6
- Calibrated Size
- No
- Type of Cut
- Custom Designed ROUND
- Cutter
- faceted by Masterpiece Collective – Nick Brevig (USA)
- Color
- Lavender-Rose Pink with Slight Orangey Overtone
- Clarity
- - F
  - VVS1
  - VVS2
  - VS1
  - VS2
  - SI1
  - SI2
  - P1
  - P2
- Treatment
- None
- Sheen/Schiller/Silk intensity
- - None
  - Very Low
  - Low
  - Low-Medium
  - Medium
  - Medium-Strong
  - Strong
  - Very Strong
- Tone / Saturation
- - Colorless
  - Very Very Light
  - Very Light
  - Light
  - Light-Medium
  - Medium
  - Medium Deep
  - Deep
  - Very Deep
  - Near Blackish
- Investment potential
- - 10
  - 9
  - 8
  - 7
  - 6
  - 5
  - 4
  - 3
  - 2
  - 1
- Rarity
- - 10
  - 9
  - 8
  - 7
  - 6
  - 5
  - 4
  - 3
  - 2
  - 1

* 1.0 ct = 0.2 gr ** Images were taken under open daylight (6,500K), for color change gems additionally under iridescent light source (2700K)

$795.00

Price Per Carat

$193.43

- Item Number
- W7083
- Gemstone
- Malaia / Malaya Garnet
- Origin
- Eastern Africa
- Weight
- 4.11 ct
- Dimension (mm)
- 8.9 x 8.9 x 6.2
- Calibrated Size
- Yes
- Type of Cut
- Custom Designed Octagon
- Cutter
- faceted by Masterpiece Collective – Nick Brevig (USA)
- Color
- Orange-Red
- Clarity
- - F
  - VVS1
  - VVS2
  - VS1
  - VS2
  - SI1
  - SI2
  - P1
  - P2
- Treatment
- None
- Sheen/Schiller/Silk intensity
- - None
  - Very Low
  - Low
  - Low-Medium
  - Medium
  - Medium-Strong
  - Strong
  - Very Strong
- Tone / Saturation
- - Colorless
  - Very Very Light
  - Very Light
  - Light
  - Light-Medium
  - Medium
  - Medium Deep
  - Deep
  - Very Deep
  - Near Blackish
- Investment potential
- - 10
  - 9
  - 8
  - 7
  - 6
  - 5
  - 4
  - 3
  - 2
  - 1
- Rarity
- - 10
  - 9
  - 8
  - 7
  - 6
  - 5
  - 4
  - 3
  - 2
  - 1
- Note
- VIDEO outside: https://www.youtube.com/shorts/1nLKyUtFwSs

* 1.0 ct = 0.2 gr ** Images were taken under open daylight (6,500K), for color change gems additionally under iridescent light source (2700K)

$1,500.00

Price Per Carat

$118.67

- Item Number
- W5772
- Gemstone
- Mandarin Garnet
- Origin
- Tanzania, Africa
- Weight
- 12.64 ct
- Dimension (mm)
- 14.8 x 14.5 x 5.9
- Calibrated Size
- No
- Type of Cut
- Artistic Carving by Darryl Alexander
- Cutter
- Darryl Alexander – USA
- Color
- Vivid Fanta Orange
- Clarity
- Fully transparent, mostly clean with minor natural crystal inclusions
- Treatment
- None
- Sheen/Schiller/Silk intensity
- - None
  - Very Low
  - Low
  - Low-Medium
  - Medium
  - Medium-Strong
  - Strong
  - Very Strong
- Tone / Saturation
- - Colorless
  - Very Very Light
  - Very Light
  - Light
  - Light-Medium
  - Medium
  - Medium Deep
  - Deep
  - Very Deep
  - Near Blackish
- Current market value
- - 10
  - 9
  - 8
  - 7
  - 6
  - 5
  - 4
  - 3
  - 2
  - 1
- Investment potential
- - 10
  - 9
  - 8
  - 7
  - 6
  - 5
  - 4
  - 3
  - 2
  - 1
- Rarity
- - 10
  - 9
  - 8
  - 7
  - 6
  - 5
  - 4
  - 3
  - 2
  - 1
- Note
- Extremely rare, museum investment grade. Mandarin Garnet over 10ct is extremely rare!, VIDEO Outside: https://www.youtube.com/shorts/LFLxiefhzmI

* 1.0 ct = 0.2 gr ** Images were taken under open daylight (6,500K), for color change gems additionally under iridescent light source (2700K)

$1,900.00

Price Per Carat

$149.96

- Item Number
- W5773
- Gemstone
- Mandarin Garnet
- Origin
- Tanzania, Africa
- Weight
- 12.67 ct
- Dimension (mm)
- 16.8 x 12.2 x 8.2
- Calibrated Size
- No
- Type of Cut
- Artistic Carving by Darryl Alexander
- Cutter
- Darryl Alexander – USA
- Color
- Vivid Fanta Orange
- Clarity
- Fully transparent, mostly clean with minor natural crystal inclusions
- Treatment
- None
- Sheen/Schiller/Silk intensity
- - None
  - Very Low
  - Low
  - Low-Medium
  - Medium
  - Medium-Strong
  - Strong
  - Very Strong
- Tone / Saturation
- - Colorless
  - Very Very Light
  - Very Light
  - Light
  - Light-Medium
  - Medium
  - Medium Deep
  - Deep
  - Very Deep
  - Near Blackish
- Current market value
- - 10
  - 9
  - 8
  - 7
  - 6
  - 5
  - 4
  - 3
  - 2
  - 1
- Investment potential
- - 10
  - 9
  - 8
  - 7
  - 6
  - 5
  - 4
  - 3
  - 2
  - 1
- Rarity
- - 10
  - 9
  - 8
  - 7
  - 6
  - 5
  - 4
  - 3
  - 2
  - 1
- Note
- Extremely rare, museum / investment grade. Mandarin Garnet over 10ct is extremely rare!, VIDEO: https://www.youtube.com/shorts/BrsEbV1JJlg

* 1.0 ct = 0.2 gr ** Images were taken under open daylight (6,500K), for color change gems additionally under iridescent light source (2700K)

$6,705.00

Price Per Carat

$1,500.00

- Item Number
- W6522
- Gemstone
- Natural Untreated Tourmaline
- Origin
- Congo, Africa
- Weight
- 4.47 ct
- Dimension (mm)
- 7.8/7.7 x 7.8/7.7 x 6.4/6.3 mm
- Calibrated Size
- Yes
- Type of Cut
- Custom Designed TRILLION
- Cutter
- faceted by Masterpiece Collective – Steven Tyler (USA)
- Color
- Incredible Blue-Green
- Clarity
- - F
  - VVS1
  - VVS2
  - VS1
  - VS2
  - SI1
  - SI2
  - P1
  - P2
- Treatment
- None
- Sheen/Schiller/Silk intensity
- - None
  - Very Low
  - Low
  - Low-Medium
  - Medium
  - Medium-Strong
  - Strong
  - Very Strong
- Tone / Saturation
- - Colorless
  - Very Very Light
  - Very Light
  - Light
  - Light-Medium
  - Medium
  - Medium Deep
  - Deep
  - Very Deep
  - Near Blackish
- Investment potential
- - 10
  - 9
  - 8
  - 7
  - 6
  - 5
  - 4
  - 3
  - 2
  - 1
- Rarity
- - 10
  - 9
  - 8
  - 7
  - 6
  - 5
  - 4
  - 3
  - 2
  - 1
- Note
- VIDEO: https://www.youtube.com/shorts/dMuIsAyN3sY

* 1.0 ct = 0.2 gr ** Images were taken under open daylight (6,500K), for color change gems additionally under iridescent light source (2700K)

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