Shop

$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
$360.00
Item Number
Gemstone
Natural Tourmaline
Origin
Zambia
Weight (ct)
2.53 ct
Dimensions (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 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
$142.29
$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
$288.00
Item Number
Gemstone
Natural Unheated Parti Sapphire
Origin
Kenya
Weight (ct)
0.80 ct
Dimensions (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 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
$360.00
$190.00
Item Number
Gemstone
Natural Unheated Blue Sapphire
Origin
Kenya
Weight (ct)
0.77 ct
Dimensions (mm)
9.6 x 4.3 x 2.6
Calibrated Size
No
Type of Cut
Custom Designed MARQUISE
Cutter
Faceted by Ravenstein Gem Co.
Color
Blue
Clarity Scale
FVVS1VVS2VS1VS2SI1SI2P1P2
Clarity
VVS1 with very slight schiller
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
$246.75
$600.00
Item Number
Gemstone
Natural Unheated Blue Sapphire
Origin
Rwanda, Africa
Weight (ct)
1.22 ct
Dimensions (mm)
8.0 x 4.4 x 3.5
Calibrated Size
No
Type of Cut
Radiant SHIELD
Cutter
Faceted by Ravenstein Gem Co.
Color
Medium Blue with Slight Schiller
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
$491.80
$940.00
Item Number
Gemstone
Natural Unheated Blue Sapphire
Origin
Rwanda, Africa
Weight (ct)
1.59 ct
Dimensions (mm)
8.2 x 6.3 x 4.2
Calibrated Size
Yes
Type of Cut
Custom Designed PEAR
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
$591.19
$1,000.00
Item Number
Gemstone
Natural Unheated Blue Sapphire
Origin
Rwanda, Africa
Weight (ct)
2.01 ct
Dimensions (mm)
7.1 x 7.0 x 5.1
Calibrated Size
Yes
Type of Cut
Custom Designed Square CUSHION
Cutter
Faceted by Ravenstein Gem Co.
Color
Blue with some color zoning
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
$497.51
Item Number
Gemstone
Natural Untreated Blue Topaz
Origin
Nigeria, Africa
Weight (ct)
1.59 ct
Dimensions (mm)
7.5 x 5.8 x 4.9
Calibrated Size
No
Type of Cut
Modified SHIELD
Cutter
Faceted by Ravenstein Gem Co.
Color
Light Pastel 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
$40.25

Discover a gem as unique as you are.

Step into a world of rare beauty

Ravenstein Gem Co. LLC 2026 ยฉ
Made By a Peanut
JOGS TUCSON GEM SHOW
Where:
Tucson Expo Center, Booth #E324
When:
September 3 - 6, 2026

Find more details here.