Shop

Name: Natural Untreated Blue Green Parti Sapphire, Kenya 0.80 Ct octagon
SKU: 20591
Availability: InStock

Showing 841–850 of 1566 results

$360.00

Price Per Carat

$142.29

- Item Number
- W6414
- Gemstone
- Natural Tourmaline
- Origin
- Zambia
- Weight
- 2.53 ct
- Dimension (mm)
- 12.8 x 5.7 x 4.4
- Calibrated Size
- No
- Type of Cut
- Custom Designed Octagon
- Cutter
- Faceted by Ravenstein Gem Co.
- Color
- Light Pastel Green Gold
- 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/watch?v=_0vr_cQEnhQ

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

$353.00

Price Per Carat

$133.21

- Item Number
- W6413
- Gemstone
- Natural Tourmaline
- Origin
- Zambia
- Weight
- 2.65 ct
- Dimension (mm)
- 8.1 x 8.0 x 5.9
- Calibrated Size
- Yes
- Type of Cut
- Custom Designed Octagon
- Cutter
- Faceted by Ravenstein Gem Co.
- Color
- Pastel Green Gold
- 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/watch?v=tCsz0Ny6MUY

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

$555.00

Price Per Carat

$111.00

- Item Number
- W6417
- Gemstone
- Natural Tourmaline
- Origin
- Zambia
- Weight
- 5.0 ct
- Dimension (mm)
- 11.8 x 7.9 x 6.9
- Calibrated Size
- No
- Type of Cut
- Radiant Rectangle
- Cutter
- Faceted by Ravenstein Gem Co.
- Color
- Green-Gold
- 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/KgQ-aCGKEl4, VIDEO on a hand: https://www.youtube.com/shorts/O2wIgW8dMxs

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

$5,750.00

Price Per Carat

$551.82

- Item Number
- B-W5947
- Gemstone
- Natural Untreated Tricolor Tourmaline
- Origin
- Congo, Africa
- Weight
- 10.42 ct
- Dimension (mm)
- 20.2 x 8.4 x 6.9 mm
- Calibrated Size
- No
- Type of Cut
- Custom Designed Octagon
- Cutter
- faceted by Masterpiece Collective – Nick Brevig (USA)
- Color
- Bright Grass Green to Gold Yellow to Bright Pink
- 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/rcW-in2eiY0, VIDEO outside: https://www.youtube.com/shorts/EoiJKHzz1vg

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

$5,245.00

Price Per Carat

$450.21

- Item Number
- B-W7436
- Gemstone
- Natural Untreated Tricolor Tourmaline
- Origin
- Congo, Africa
- Weight
- 11.65 ct
- Dimension (mm)
- 26.9 x 7.8 x 6.0
- Calibrated Size
- No
- Type of Cut
- Custom Designed Octagon
- Cutter
- faceted by Masterpiece Collective – Nick Brevig (USA)
- Color
- Pink, Pink-Peach and 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 outside: https://www.youtube.com/shorts/O3b3-wjlMG8

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

$755.00

Price Per Carat

$227.41

- Item Number
- W5739
- Gemstone
- Tourmaline Tropical Sunset
- Origin
- Malkhan, Russia
- Weight
- 3.32 ct
- Dimension (mm)
- 12.4 x 6.2 x 5.3
- Calibrated Size
- No
- Type of Cut
- Step Cut OCTAGON ( Emerald Cut)
- Cutter
- Faceted by Ravenstein Gem Co.
- Color
- Neon Magenta-Peach-Hot Pink
- 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
- Note
- VIDEO: https://www.youtube.com/shorts/Uf_KdJ7C6YM

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

$103.00

Price Per Carat

$40.39

- Item Number
- W3967
- Gemstone
- Unheated Tourmaline
- Origin
- Malawi, Africa
- Weight
- 2.55 ct
- Dimension (mm)
- 10.0 x 6.1 x 5.0
- Calibrated Size
- No
- Type of Cut
- Radiant OCTAGON
- Cutter
- faceted by Ravenstein Gem Co., EU
- Color
- Green-Orangey
- 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)

$745.00

Price Per Carat

$39.99

- Item Number
- B-W7459
- Gemstone
- Natural Untreated Tourmaline
- Origin
- Congo, Africa
- Weight
- 18.63 ct
- Dimension (mm)
- 19.6 x 11 x 9.5
- Shape
- Natural Rough
- Color
- as photographed / video
- Clarity
- Mostly clean, facet grade
- Treatment
- None
- 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/jtZd-fuG-Hk

* 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

$10.07

- Item Number
- W7461
- Gemstone
- Natural Zircon
- Origin
- Tanzania, Africa
- Weight
- 21.85 ct
- Dimension (mm)
- 19 x 10.8 x 8.6
- Shape
- Natural Rough
- Color
- as photographed
- Clarity
- Transparent, Facet Grade
- Treatment
- None
- 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/5B3OoAfma1g

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

$248.00

Price Per Carat

$310.00

- Item Number
- 20591
- Gemstone
- Natural Unheated Parti Sapphire
- Origin
- Kenya
- Weight
- 0.80 ct
- Dimension (mm)
- 5.0 x 5.0 x 3.6
- Calibrated Size
- Yes
- Type of Cut
- Custom Designed Radiant Square Octagon
- Cutter
- Faceted by Ravenstein Gem Co.
- Color
- Blue-Green-Teal
- 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/dndJpggKpVg

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

Shop

Help

Find Us online

Footer

Shop

Help

Get more stuff

Find Us online

We're Looking Forward to Seeing You at the Tucson Gem Show!

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