Shop

1923 available Gems

$115.00
Item Number
Gemstone
Amethyst
Origin
Rwanda, Africa
Weight (ct)
4.29 ct
Dimensions (mm)
12.9 x 8.3 x 7.9
Calibrated Size
No
Type of Cut
Custom Designed MARQUISE
Cutter
Faceted by Ravenstein Gem Co.
Color
Medium Purple-Lavender with Blue 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
$26.81
Item Number
Gemstone
Danburite
Origin
La Aurora mine, Charcas, San Luis Potosí, Mexico
Weight (ct)
135.50 ct
Dimensions (mm)
41.3 x 25 x 16.9
Color
Pink Tint
Shape
Blocky Natural Crystal
Clarity
Transparent, top collector grade - with a wood stand
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
$1.44
$449.00
Item Number
Gemstone
Dragon Garnet - Color Change Fluorescent Chromium-Vanadium Malaya
Origin
Africa
Weight (ct)
1.05 ct
Dimensions (mm)
6.0 x 4.9 x 3.9, 8.5 x 6.8 x 4.2
Calibrated Size
No
Type of Cut
Custom Designed KITE
Cutter
Faceted by Ravenstein Gem Co.
Color
stone changes color to neon pink red under 395 UV
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
$427.62
Item Number
Gemstone
Multicolor Schiller Oregon Sunstone
Origin
PANA Mine, Little Eagle Butte, Oregon, USA
Weight (ct)
43.66 ct
Dimensions (mm)
25.3 x 20 x 12.5
Color
as photographed - multicolor with copper schiller
Shape
Natural Rough
Clarity
Transparent, 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
$7.99
Item Number
Gemstone
Natural Zircon
Origin
Tanzania, Africa
Weight (ct)
17.94 ct
Dimensions (mm)
16.7 x 10.9 x 7.7
Color
Champagne
Shape
Natural Rough
Clarity
Transparent, 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
$7.41
$340.00
Item Number
Gemstone
Dragon Garnet - Color Change Fluorescent Chromium-Vanadium Malaya
Origin
Africa
Weight (ct)
5.53 ct
Dimensions (mm)
9.9 x 8.3 x 6.6
Color
stone changes color to wine red under 395 UV
Shape
Natural Rough
Clarity
Transparent, facet grade, with some typical microscipic Rutile needle inclusions
Treatment
None
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
$61.48
$680.00
Item Number
Gemstone
Natural Untreated Sapphire
Origin
Mozambique
Weight (ct)
1.04 ct
Dimensions (mm)
6.9 x 5.6 x 4.0
Calibrated Size
No
Type of Cut
Custom Designed PEAR
Cutter
Faceted by Ravenstein Gem Co.
Color
Very 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
$653.85
$226.00
Item Number
Gemstone
Natural Untreated Sapphire
Origin
Mozambique
Weight (ct)
0.42 ct
Dimensions (mm)
4.4 x 4.3 x 2.9
Calibrated Size
No
Type of Cut
Custom Designed TRIANGLE
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
$538.10
$175.00
Item Number
Gemstone
Black Spinel
Origin
Central Arizona, USA
Weight (ct)
11.0 ct
Dimensions (mm)
15.0 x 12.1 x 6.4
Calibrated Size
No
Type of Cut
Oval Cabochon
Cutter
cut by Ravenstein Gem Co.
Color
Black
Treatment
None
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
$15.91
$145.00
Item Number
Gemstone
Black Spinel
Origin
Central Arizona, USA
Weight (ct)
10.11 ct
Dimensions (mm)
13.4 x 12.0 x 6.5
Calibrated Size
No
Type of Cut
Oval Cabochon
Cutter
cut by Ravenstein Gem Co.
Color
Black
Treatment
None
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
$14.34

Discover a gem as unique as you are.

Step into a world of rare beauty

Ravenstein Gem Co. LLC 2026 ©
Made By a Peanut