michael donovan Archives

$200.00

Item Number

W7343

Gemstone

Natural Untreated Silver-Bluish Topaz

Origin

Nigeria, Africa

Weight (ct)

10.0 ct

Dimensions (mm)

13.1 mm Diameter x 9.1 mm

Calibrated Size

No

Type of Cut

Custom Designed ROUND

Cutter

Faceted by Ravenstein Gem Co.

Color

Silver-Bluish

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

$20.00

$400.00

Item Number

22171

Gemstone

Natural Untreated St. Anne Blue Topaz

Origin

Saint Anne Mine, Rhodesia / Zimbabwe

Weight (ct)

125.90 ct

Dimensions (mm)

30.5 x 28 x 22

Color

Rich Sky Blue

Clarity

Facet / cabochon / top collector grade

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

$3.18

$450.00

Item Number

22160

Gemstone

Natural Untreated St. Anne Blue Topaz

Origin

Saint Anne Mine, Rhodesia / Zimbabwe

Weight (ct)

150.80 ct

Dimensions (mm)

40 x 23.9 x 22

Color

Rich Sky Blue

Clarity

Transparent, semi facet / cabochon / top collector grade

Treatment

None

Notes

The St.Anne mine in Zimbabwe was closed 2 years ago.

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

$2.98

$329.00

Item Number

22172

Gemstone

Natural Untreated St. Anne Blue Topaz

Origin

Saint Anne Mine, Rhodesia / Zimbabwe

Weight (ct)

231.20 ct

Dimensions (mm)

54 x 30 x 25

Color

Rich Sky Blue

Clarity

Transparent with Tourmaline crystals

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

$1.42

$104.00

Item Number

22212

Gemstone

Natural Untreated St. Anne Blue Topaz

Origin

Saint Anne Mine, Rhodesia / Zimbabwe

Weight (ct)

56.90 ct

Dimensions (mm)

as photographed / video

Color

Rich Sky Blue

Clarity

Mostly transparent with some natural flaws

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

$1.83

$454.00

Item Number

22136

Gemstone

Natural Untreated St. Anne Blue Topaz

Origin

Saint Anne Mine, Rhodesia / Zimbabwe

Weight (ct)

7.97 ct

Dimensions (mm)

13.0 x 11.8 x 8.6

Calibrated Size

No

Type of Cut

Custom Designed Shield

Cutter

Faceted by Ravenstein Gem Co.

Color

Rich Sky 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

$56.96

$260.00

Item Number

22161

Gemstone

Natural Untreated St. Anne Blue Topaz

Origin

Saint Anne Mine, Rhodesia / Zimbabwe

Weight (ct)

88.60 ct

Dimensions (mm)

25 x 24.8 x 17.5

Color

Rich Sky Blue

Clarity

Transparent, semi facet / cabochon / top collector grade

Treatment

None

Notes

The St.Anne mine in Zimbabwe was closed 2 years ago.

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

$2.93

$349.00

Item Number

22159

Gemstone

Natural Untreated St. Anne Blue Topaz

Origin

Saint Anne Mine, Rhodesia / Zimbabwe

Weight (ct)

90.10 ct

Dimensions (mm)

29.5 x 24.1 x 17

Color

Rich Sky Blue

Clarity

Facet / cabochon / top collector grade

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

$3.87

$299.00

Item Number

22021

Gemstone

Natural Untreated Topaz

Origin

Nigeria, Africa

Weight (ct)

11.23 ct

Dimensions (mm)

12.3/12.5 x 9.0/9.4 x 6.9/6.8

Calibrated Size

No

Type of Cut

Custom Designed Shield

Cutter

Faceted by Ravenstein Gem Co.

Color

Diamond-like - Colorless, Slight 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

$26.63

$325.00

Item Number

W7580

Gemstone

Natural Untreated Topaz

Origin

Nigeria, Africa

Weight (ct)

12.19 ct

Dimensions (mm)

10.0 x 8.0 x 8.4 and 9.9 x 7.5 x 8.3 mm

Calibrated Size

No

Type of Cut

Custom Designed Rectangle

Cutter

Faceted by Ravenstein Gem Co.

Color

Light Pastel Blue Greenish

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

$26.66

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