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Name: Natural Untreated Tourmaline 2.48 Ct
SKU: W / 20190
Availability: InStock

Showing 981–990 of 1557 results

$299.00

Price Per Carat

$26.63

- Item Number
- 22021
- Gemstone
- Natural Untreated Topaz
- Origin
- Nigeria, Africa
- Weight
- 11.23 ct
- Dimension (mm)
- 12.3/12.5 x 9.0/9.4 x 6.9/6.8
- Calibrated Size
- No
- Type of Cut
- Custom Designed Shield
- Cutter
- Faceted by Ravenstein Gem Co.
- Color
- Diamond-like – Colorless, Slight Bluish Tint
- 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/4aC2RXRW3Fo

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

$325.00

Price Per Carat

$26.66

- Item Number
- W7580
- Gemstone
- Natural Untreated Topaz
- Origin
- Nigeria, Africa
- Weight
- 12.19 ct
- Dimension (mm)
- 10.0 x 8.0 x 8.4 and 9.9 x 7.5 x 8.3 mm
- Calibrated Size
- No
- Type of Cut
- Custom Designed Rectangle
- Cutter
- Faceted by Ravenstein Gem Co.
- Color
- Light Pastel Blue-Greenish
- 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/xBDdh5lqDSM

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

$338.00

Price Per Carat

$27.64

- Item Number
- 21852
- Gemstone
- Natural Untreated Topaz
- Origin
- Nigeria, Africa
- Weight
- 12.23 ct
- Dimension (mm)
- 13.9 x 15.0 x 9.8
- Calibrated Size
- No
- Type of Cut
- Custom Designed Shield
- Cutter
- Faceted by Ravenstein Gem Co.
- Color
- Bluish Tint
- 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/3DK0tZ3ph_o

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

$400.00

Price Per Carat

$22.09

- Item Number
- W7355
- Gemstone
- Natural Untreated Topaz
- Origin
- Nigeria, Africa
- Weight
- 18.11 ct
- Dimension (mm)
- 13.0/13.0 mm Diameter x 8.2/8.5
- Calibrated Size
- No
- Type of Cut
- Custom Designed ROUND
- Cutter
- Faceted by Ravenstein Gem Co.
- Color
- Bluish Tint
- 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/qQoL9kduKII

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

$490.00

Price Per Carat

$24.77

- Item Number
- W7411
- Gemstone
- Natural Untreated Topaz
- Origin
- Nigeria, Africa
- Weight
- 19.78 ct
- Dimension (mm)
- 13.0/13.0 mm Diameter x 9.0/8.8
- Calibrated Size
- No
- Type of Cut
- Custom Designed ROUND
- Cutter
- Faceted by Ravenstein Gem Co.
- Color
- Slight Bluish Tint
- 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/JLA_NrMGFL4, VIDEO: https://www.youtube.com/shorts/XqmfdbEgljE

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

$160.00

Price Per Carat

$24.81

- Item Number
- W7354
- Gemstone
- Natural Untreated Topaz
- Origin
- Nigeria, Africa
- Weight
- 6.45 ct
- Dimension (mm)
- 10.3/10.3 x 7.9/7.8 x 5.5/5.5
- Calibrated Size
- No
- Type of Cut
- Custom Designed CUSHION
- Cutter
- Faceted by Ravenstein Gem Co.
- Color
- Bluish Tint
- 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/ULVBLBrGMjg

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

$220.00

Price Per Carat

$25.97

- Item Number
- W7353
- Gemstone
- Natural Untreated Topaz
- Origin
- Nigeria, Africa
- Weight
- 8.47 ct
- Dimension (mm)
- 11.2/10.8 x 11.2/10.7 x 6.2/6.3
- Calibrated Size
- No
- Type of Cut
- Custom Designed TRILLION
- Cutter
- Faceted by Ravenstein Gem Co.
- Color
- Bluish Tint
- 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/ujw2b6SPkR0

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

$249.00

Price Per Carat

$27.88

- Item Number
- 21853
- Gemstone
- Natural Untreated Topaz
- Origin
- Nigeria, Africa
- Weight
- 8.93 ct
- Dimension (mm)
- 13.3 x 12.8 x 8.7
- Calibrated Size
- No
- Type of Cut
- Custom Designed Shield
- Cutter
- Faceted by Ravenstein Gem Co.
- Color
- Bluish Tint
- 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/1Gny5jSoOH0

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

$110.00

Price Per Carat

$142.86

- Item Number
- W4881
- Gemstone
- Unheated Tourmaline
- Origin
- Zambia
- Weight
- 0.77 ct
- Dimension (mm)
- 5.4 x 5.4 x 3.6
- Calibrated Size
- No
- Type of Cut
- Radiant SQUARE-Princess
- Cutter
- Faceted by Ravenstein Gem Co.
- Color
- Peacock Blue-Green to Neon Green-Yellow
- 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
- 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

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

$295.00

Price Per Carat

$118.95

- Item Number
- W / 20190
- Gemstone
- Natural Tourmaline
- Origin
- Congo, Africa
- Weight
- 2.48 ct
- Dimension (mm)
- 12.0 x 5.6 x 4.4
- Calibrated Size
- No
- Type of Cut
- Step Cut OCTAGON
- Color
- Pastel Pink-Orange
- 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
- 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

* 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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22nd Street Show, Showcase Tent K11

Jan 30 - Feb 16, 2025

If you'd like to meet, please make an appointment here or email katerina@ravensteingemco.com