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5 available Gems

Item Number
Gemstone
Seafoam Green Oregon Sunstone
Origin
PANA Mine, Southern Oregon, USA
Weight (ct)
2.38 ct
Dimensions (mm)
10.9 x 9.5 x 5.9
Calibrated Size
No
Type of Cut
Modified Fan
Cutter
Faceted by Ravenstein Gem Co.
Color
Light Pastel Seafoam Green
Clarity Scale
FVVS1VVS2VS1VS2SI1SI2P1P2
Treatment
None
Tone / Saturation
Notes

A very bright gemstone in rare natural color.

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
$37.82
Item Number
Gemstone
Natural Unheated Tourmaline Rubellite
Origin
Malawi, Africa
Weight (ct)
1.71 ct
Dimensions (mm)
8.4 x 6.3 x 5.8
Calibrated Size
No
Type of Cut
Custom Designed Checkerboard Crown PEAR
Cutter
faceted by Ravenstein Gem Co., EU
Color
Rose Pink-Orange
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
$122.81
Item Number
Gemstone
Tourmaline Rubellite
Origin
Malawi, Africa
Weight (ct)
2.82 ct
Dimensions (mm)
9.2 x 7.6 x 5.7
Calibrated Size
No
Type of Cut
Custom Designed CUSHION
Cutter
Faceted by Ravenstein Gem Co.
Color
Deep Orange Red with Purplish Flashes/Shift
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
$83.33
$190.00
Item Number
Gemstone
Natural Tourmaline
Origin
Nigeria, Africa
Weight (ct)
4.13 ct
Dimensions (mm)
15.0 x 9.2 x 6.0
Calibrated Size
No
Type of Cut
Radiant Free Form
Cutter
Faceted by Ravenstein Gem Co.
Color
Olive Green to Green-Yellowish
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
$46.00
Item Number
Gemstone
Umbalite Pyralspite Garnet
Origin
Eastern Africa
Weight (ct)
2.92 ct
Dimensions (mm)
12.3 x 7.4 x 4.6
Calibrated Size
No
Type of Cut
Modified PEAR
Cutter
Faceted by Ravenstein Gem Co.
Color
Magenta-Hot 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
$83.56

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Ravenstein Gem Co. LLC 2026 ©
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JOGS TUCSON GEM SHOW
Where:
Tucson Expo Center, Booth #E217
When:
September 3 - 6, 2026

Find more details here.