ravenstein gem co. Archives

$940.00

Item Number

W7122

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

$132.00

Item Number

22029

Gemstone

Natural Untreated Blue Topaz

Origin

Saint Anne Mine, Rhodesia / Zimbabwe

Weight (ct)

62.10 ct

Dimensions (mm)

as photographed / video

Color

Rich Sky Blue with Electric Blue Overtone

Shape

Natural Rough

Clarity

Transparent, carving / semi facet grade

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

$2.13

$136.00

Item Number

22028

Gemstone

Natural Untreated Blue Topaz

Origin

Saint Anne Mine, Rhodesia / Zimbabwe

Weight (ct)

64.21 ct

Dimensions (mm)

as photographed / video

Color

Rich Sky Blue with Electric Blue Overtone

Shape

Natural Rough

Clarity

Transparent, carving / semi facet grade

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

$2.12

$126.00

Item Number

W / 20958

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

$375.00

Item Number

W7597

Gemstone

Natural Untreated Blue Topaz

Origin

Nigeria, Africa

Weight (ct)

13.89 ct

Dimensions (mm)

12.5/13.4 x 10.3/10.2 x 7.7/7.4

Calibrated Size

No

Type of Cut

Custom Designed Half Moon

Cutter

Faceted by Ravenstein Gem Co.

Color

Bluish Tint

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

$27.00

$72.00

Item Number

W / 21765

Gemstone

Natural Untreated Blue Topaz

Origin

Nigeria, Africa

Weight (ct)

3.08 ct

Dimensions (mm)

8.5 mm Diameter x 6.4

Calibrated Size

No

Type of Cut

Custom Designed ROUND

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

$23.38

$90.00

Item Number

21496

Gemstone

Natural Untreated Topaz

Origin

Nigeria, Africa

Weight (ct)

3.70 ct

Dimensions (mm)

10.0 x 8.0 x 6.9

Calibrated Size

Yes

Type of Cut

Custom Designed OVAL

Cutter

Faceted by Ravenstein Gem Co.

Color

Bluish Tint

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

$24.32

$80.00

Item Number

20717

Gemstone

Natural Untreated Blue Topaz

Origin

Nigeria, Africa

Weight (ct)

4.02 ct

Dimensions (mm)

12.0 x 8.0 x 6.7

Calibrated Size

No

Type of Cut

Custom Designed MARQUISE

Cutter

Faceted by Ravenstein Gem Co.

Color

Bluish Tint

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

$19.90

$115.00

Item Number

W7165

Gemstone

Natural Untreated Blue Topaz

Origin

Nigeria, Africa

Weight (ct)

4.47 ct

Dimensions (mm)

14.3 x 9.1 x 6.1

Calibrated Size

No

Type of Cut

Custom Designed PEAR

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

$25.73

$1,195.00

Item Number

22105

Gemstone

Natural Untreated Blue Topaz

Origin

Nigeria, Africa

Weight (ct)

40.92 ct

Dimensions (mm)

18.1/18.2 x 14.5/14.4 x 11.8/11.9

Calibrated Size

No

Type of Cut

Custom Designed OVAL

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

$29.20

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