Shop

1886 available Gems

$2,877.00
Item Number
Gemstone
Natural Untreated Tourmaline
Origin
Congo, Africa
Weight (ct)
7.55 ct
Dimensions (mm)
12.8 mm Diameter x 9.3
Calibrated Size
No
Type of Cut
Custom Designed Checkerboard Crown ROUND
Cutter
Mark Nuell - USA
Color
Green with Gold-Yellow Overtone
Clarity Scale
FVVS1VVS2VS1VS2SI1SI2P1P2
Treatment
None
Tone / Saturation

* 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
$381.06
$126.00
Item Number
Gemstone
Natural Untreated Blue Topaz
Origin
Nigeria, Africa
Weight (ct)
8.23 ct
Dimensions (mm)
14.0/14.1 x 9.0/9.0 x 5.9/6.1
Calibrated Size
No
Type of Cut
Custom Designed PEAR
Cutter
Faceted by Ravenstein Gem Co.
Color
Very Very Light Blue
Clarity Scale
FVVS1VVS2VS1VS2SI1SI2P1P2
Treatment
None
Tone / Saturation

* 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
$15.31
$89.00
Item Number
Gemstone
Natural Untreated Blue Topaz
Origin
Nigeria, Africa
Weight (ct)
5.61 ct
Dimensions (mm)
16.0 x 10.0 x 6.7
Calibrated Size
No
Type of Cut
Custom Designed PEAR
Cutter
Faceted by Ravenstein Gem Co.
Color
Very Very Light Blue
Clarity Scale
FVVS1VVS2VS1VS2SI1SI2P1P2
Treatment
None
Tone / Saturation

* 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
$15.86
$286.00
Item Number
Gemstone
Spessartine-Mandarin Garnet
Origin
Tanzania, Africa
Weight (ct)
1.56 ct
Dimensions (mm)
9.5 x 6.2 x 4.3
Calibrated Size
No
Type of Cut
Custom Designed Checkerboard Crown DIAMOND
Cutter
Faceted by Ravenstein Gem Co.
Color
Vivid Fanta 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
$183.33
$268.00
Item Number
Gemstone
Spessartine-Mandarin Garnet
Origin
Tanzania, Africa
Weight (ct)
1.46 ct
Dimensions (mm)
8.6 x 7.2 x 4.3
Calibrated Size
No
Type of Cut
Custom Designed Fan
Cutter
Faceted by Ravenstein Gem Co.
Color
Vivid Fanta 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
$183.56
$220.00
Item Number
Gemstone
Spessartine-Mandarin Garnet
Origin
Tanzania, Africa
Weight (ct)
1.19 ct
Dimensions (mm)
6.5 mm Diameter x 4.2 mm
Calibrated Size
No
Type of Cut
Custom Designed ROUND
Cutter
Faceted by Ravenstein Gem Co.
Color
Vivid Fanta Orange
Clarity Scale
FVVS1VVS2VS1VS2SI1SI2P1P2
Treatment
None
Tone / Saturation

* 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
$184.87
$262.00
Item Number
Gemstone
Spessartine-Mandarin Garnet
Origin
Tanzania, Africa
Weight (ct)
1.43 ct
Dimensions (mm)
7.5 x 5.5 x 4.2
Calibrated Size
No
Type of Cut
Custom Designed CUSHION
Cutter
Faceted by Ravenstein Gem Co.
Color
Vivid Fanta 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
$183.22
$220.00
Item Number
Gemstone
Spessartine-Mandarin Garnet
Origin
Tanzania, Africa
Weight (ct)
1.19 ct
Dimensions (mm)
7.0 x 7.0 x 3.8
Calibrated Size
No
Type of Cut
Custom Designed Shield
Cutter
Faceted by Ravenstein Gem Co.
Color
Vivid Fanta Orange
Clarity Scale
FVVS1VVS2VS1VS2SI1SI2P1P2
Treatment
None
Tone / Saturation

* 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
$184.87
Item Number
Gemstone
Demantoid Garnet
Origin
Ural Mountains, Russia
Weight (ct)
1.07 ct
Dimensions (mm)
6.3 x 5.0 x 3.4
Calibrated Size
No
Type of Cut
Radiant Rectangle
Cutter
Faceted by Ravenstein Gem Co.
Color
Apple Green with Slight Yellowish Overtone
Clarity
Eye clean with beautiful semi heavy horsetail inclusion
Treatment
None
Tone / Saturation

* 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
$807.48
Item Number
Gemstone
Yellow-Green Schiller Oregon Sunstone
Origin
PANA Mine, Little Eagle Butte, Oregon, USA
Weight (ct)
7.71 ct
Dimensions (mm)
20.0 x 14.7 x 8.5
Calibrated Size
No
Type of Cut
Radiant KITE
Cutter
Faceted by Ravenstein Gem Co.
Color
Gold-Yellow-Green with A(-1) Copper 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
$33.72

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