Shop

203 available Gems

$353.00
Item Number
Gemstone
Natural Tourmaline
Origin
Zambia
Weight (ct)
2.65 ct
Dimensions (mm)
8.1 x 8.0 x 5.9
Calibrated Size
Yes
Type of Cut
Custom Designed Octagon
Cutter
Faceted by Ravenstein Gem Co.
Color
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
$133.21
$5,750.00
Item Number
Gemstone
Natural Untreated Tricolor Tourmaline
Origin
Congo, Africa
Weight (ct)
10.42 ct
Dimensions (mm)
20.2 x 8.4 x 6.9 mm
Calibrated Size
No
Type of Cut
Custom Designed Octagon
Cutter
faceted by Masterpiece Collective - Nick Brevig (USA)
Color
Bright Grass Green to Gold Yellow to Bright 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
$551.82
$305.00
Item Number
Gemstone
Natural Unheated Blue Sapphire
Origin
Rwanda, Africa
Weight (ct)
0.59 ct
Dimensions (mm)
6.6 x 3.5 x 3.3
Calibrated Size
No
Type of Cut
Custom Designed Shield
Cutter
Faceted by Ravenstein Gem Co.
Color
Light 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
$516.95
$340.00
Item Number
Gemstone
Natural Unheated Blue Sapphire
Origin
Rwanda, Africa
Weight (ct)
0.60 ct
Dimensions (mm)
5.3 x 3.9 x 3.2
Calibrated Size
No
Type of Cut
Custom Designed CUSHION
Cutter
Faceted by Ravenstein Gem Co.
Color
Light Blue with Greenish Overtone
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
$566.67
$426.00
Item Number
Gemstone
Natural Unheated Blue Sapphire
Origin
Rwanda, Africa
Weight (ct)
0.76 ct
Dimensions (mm)
6.3 x 6.0 x 3.4
Calibrated Size
No
Type of Cut
Custom Designed Fan
Cutter
Faceted by Ravenstein Gem Co.
Color
Light 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
$560.53
$418.00
Item Number
Gemstone
Natural Unheated Blue Sapphire
Origin
Rwanda, Africa
Weight (ct)
0.82 ct
Dimensions (mm)
5.7 x 5.1 x 3.3
Calibrated Size
No
Type of Cut
Custom Designed Shield
Cutter
Faceted by Ravenstein Gem Co.
Color
Light 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
$509.76
$1,000.00
Item Number
Gemstone
Natural Unheated Blue Sapphire
Origin
Rwanda, Africa
Weight (ct)
1.79 ct
Dimensions (mm)
9.9 x 5.1 x 3.7
Calibrated Size
No
Type of Cut
Radiant SHIELD
Cutter
Faceted by Ravenstein Gem Co.
Color
Light 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
$558.66
$940.00
Item Number
Gemstone
Natural Unheated Blue Sapphire
Origin
Tanzania, Africa
Weight (ct)
0.97 ct
Dimensions (mm)
5.5 x 5.4 x 3.7
Calibrated Size
No
Type of Cut
Custom Designed SQUARE
Cutter
Faceted by Ravenstein Gem Co.
Color
Light Pastel Blue
Clarity Scale
FVVS1VVS2VS1VS2SI1SI2P1P2
Clarity
Rutile needle inclusions only
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
$969.07
$165.00
Item Number
Gemstone
Natural Untreated Blue Topaz
Origin
Nigeria, Africa
Weight (ct)
6.22 ct
Dimensions (mm)
11.8 x 9.5 x 8.3
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
$26.53
$250.00
Item Number
Gemstone
Natural Untreated Yellow Imperial Topaz
Origin
W. Africa
Weight (ct)
2.10 ct
Dimensions (mm)
7.3 x 7.3 x 5.5
Calibrated Size
No
Type of Cut
Custom Designed CUSHION
Cutter
Faceted by Ravenstein Gem Co.
Color
Yellow-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
$119.05

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