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345 available Gems

Item Number
Gemstone
Natural Untreated Sapphire
Origin
Tanzania, Africa
Weight (ct)
11.42 ct
Dimensions (mm)
as photographed / video
Color
Mostly Green Blue and Yellow-Green
Shape
Very Small River-worn Pebbles
Clarity
Transparent, mostly clean, facet grade
Treatment
None
Tone / Saturation
Notes

Facet grade. Will yield small ring sized gems.

3D View

* 1.0 Ct = 0.2 Gr ** Images Were Taken Under Open Daylight (6,500K), For Color Change Gems Additionally Under Iridescent Light Source (2700K)
Price per Carat
$6.92
$125.00
Item Number
Gemstone
Malkhan Tourmaline Rubellite
Origin
Malkhan, Russia
Weight (ct)
0.64 ct
Dimensions (mm)
5.1 x 4.3 x 3.6
Calibrated Size
No
Type of Cut
Step Cut OCTAGON
Cutter
Faceted by Ravenstein Gem Co.
Color
Pink-Lavender
Clarity Scale
FVVS1VVS2VS1VS2SI1SI2P1P2
Treatment
None
Tone / Saturation
3D View

* 1.0 Ct = 0.2 Gr ** Images Were Taken Under Open Daylight (6,500K), For Color Change Gems Additionally Under Iridescent Light Source (2700K)
Price per Carat
$195.31
$150.00
Item Number
Gemstone
Tourmaline Rubellite
Origin
Zambia
Weight (ct)
1.22 ct
Dimensions (mm)
8.4 x 5.8 x 4.1
Type of Cut
Modified OVAL
Cutter
Faceted by Ravenstein Gem Co.
Color
Rich Vivid Pink
Clarity Scale
FVVS1VVS2VS1VS2SI1SI2P1P2
Treatment
None
Tone / Saturation
3D View

* 1.0 Ct = 0.2 Gr ** Images Were Taken Under Open Daylight (6,500K), For Color Change Gems Additionally Under Iridescent Light Source (2700K)
Price per Carat
$122.95
$442.00
Item Number
Gemstone
Natural Tourmaline
Origin
Namibia
Weight (ct)
3.26 ct
Dimensions (mm)
9.6 mm Diameter x 6.6
Calibrated Size
No
Type of Cut
Custom Designed ROUND
Cutter
Faceted by Ravenstein Gem Co.
Color
Vivid Blue Green and Yellow Flashes
Clarity Scale
FVVS1VVS2VS1VS2SI1SI2P1P2
Treatment
None
Tone / Saturation
3D View

* 1.0 Ct = 0.2 Gr ** Images Were Taken Under Open Daylight (6,500K), For Color Change Gems Additionally Under Iridescent Light Source (2700K)
Price per Carat
$135.58
$240.00
Item Number
Gemstone
Natural Tourmaline
Origin
Zambia
Weight (ct)
2.46 ct
Dimensions (mm)
9.9 x 6.8 x 5.8
Calibrated Size
No
Type of Cut
Custom Designed CUSHION
Cutter
Faceted by Ravenstein Gem Co.
Color
Green with Gold Flashes
Clarity Scale
FVVS1VVS2VS1VS2SI1SI2P1P2
Treatment
None
Tone / Saturation
3D View

* 1.0 Ct = 0.2 Gr ** Images Were Taken Under Open Daylight (6,500K), For Color Change Gems Additionally Under Iridescent Light Source (2700K)
Price per Carat
$97.56
$500.00
Item Number
Gemstone
Natural Tourmaline
Origin
Zambia
Weight (ct)
3.34 ct
Dimensions (mm)
6.9/7.0 x 6.8/7.0 x 5.4/4.8
Calibrated Size
Yes
Type of Cut
Custom Designed Radiant SQUARE
Cutter
Faceted by Ravenstein Gem Co.
Color
Bright Green-Yellow-Charteuse
Clarity Scale
FVVS1VVS2VS1VS2SI1SI2P1P2
Treatment
None
Tone / Saturation
3D View

* 1.0 Ct = 0.2 Gr ** Images Were Taken Under Open Daylight (6,500K), For Color Change Gems Additionally Under Iridescent Light Source (2700K)
Price per Carat
$149.70
$555.00
Item Number
Gemstone
Natural Tourmaline
Origin
Zambia
Weight (ct)
5.0 ct
Dimensions (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 Scale
FVVS1VVS2VS1VS2SI1SI2P1P2
Treatment
None
Tone / Saturation
3D View

* 1.0 Ct = 0.2 Gr ** Images Were Taken Under Open Daylight (6,500K), For Color Change Gems Additionally Under Iridescent Light Source (2700K)
Price per Carat
$111.00
$5,245.00
Item Number
Gemstone
Natural Untreated Tricolor Tourmaline
Origin
Congo, Africa
Weight (ct)
11.65 ct
Dimensions (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 Scale
FVVS1VVS2VS1VS2SI1SI2P1P2
Treatment
None
Tone / Saturation
3D View

* 1.0 Ct = 0.2 Gr ** Images Were Taken Under Open Daylight (6,500K), For Color Change Gems Additionally Under Iridescent Light Source (2700K)
Price per Carat
$450.21
Item Number
Gemstone
Natural Untreated Tourmaline
Origin
Congo, Africa
Weight (ct)
18.63 ct
Dimensions (mm)
19.6 x 11 x 9.5
Color
as photographed / video
Shape
Natural Rough
Clarity
Mostly clean, facet grade
Treatment
None
Tone / Saturation
3D View

* 1.0 Ct = 0.2 Gr ** Images Were Taken Under Open Daylight (6,500K), For Color Change Gems Additionally Under Iridescent Light Source (2700K)
Price per Carat
$39.99
$282.00
Item Number
Gemstone
Natural Unheated Blue Sapphire
Origin
Rwanda, Africa
Weight (ct)
0.50 ct
Dimensions (mm)
5.3 x 4.8 x 2.9
Calibrated Size
No
Type of Cut
Modified TRILLION
Cutter
Faceted by Ravenstein Gem Co.
Color
Medium Blue
Clarity Scale
FVVS1VVS2VS1VS2SI1SI2P1P2
Treatment
None
Tone / Saturation
3D View

* 1.0 Ct = 0.2 Gr ** Images Were Taken Under Open Daylight (6,500K), For Color Change Gems Additionally Under Iridescent Light Source (2700K)
Price per Carat
$564.00

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