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Alexandrite

Tsarstone collectors guide

Gemstones by Phenomena: Change of color (Alexandrite effect)

Certified Strong Color Change Alexandrite

Alexandrite

Grade Score 9 / 10

Price & Availability

RRP: $48516.00 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Andhra Pradesh, India, South-central Asia, Asia 3.06 cts, Oval 9.30mm X 7.10mm X 5.70mm
Certified Strong Color Change Alexandrite Ov.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $7041.75 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Tunduru, Ruvuma, Ruvuma Region, Tanzania 1.63 cts, Oval 7.27mm X 5.77mm X 4.77mm
Alexandrite Pear Shape 1.01cts.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $3927.00 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Tunduru, Ruvuma, Ruvuma Region, Tanzania 1.01 cts, Pear 6.63mm X 5.26mm
Strong Color Change 9.2x4.6mm Alexandrite

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $3972.00 Private collection
Natural Alexandrite (Chrysoberyl) Tunduru, Ruvuma, Ruvuma Region, Tanzania 2.05 cts, Fancy 9.20mm X 4.60mm X 4.00mm
Strong Color Change Alexandrite Oval 3.06cts

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $44100.00 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Deobhog area, Raipur, Chhattisgarh, India 3.06 cts, Oval 11.20mm X 7.20mm X 4.40mm
Fine Strong Color Change Alexandrite Round

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $6319.50 Private collection
Natural Alexandrite (Chrysoberyl) Deobhog area, Raipur, Chhattisgarh, India 1.19 cts, Round 6.00mm X 6.00mm X 4.30mm
Fine Strong Color Change Alexandrite Oval

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $6276.00 Private collection
Natural Alexandrite (Chrysoberyl) Deobhog area, Raipur, Chhattisgarh, India 1.04 cts, Oval 6.60mm X 4.80mm X 4.00mm
Strong Color Change Alexandrite Trillion

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $6425.25 Private collection
Natural Alexandrite (Chrysoberyl) Deobhog area, Raipur, Chhattisgarh, India 1.21 cts, Trillion 6.30mm X 6.30mm X 4.20mm
Strong Color Change Alexandrite Oval

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $6651.00 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Deobhog area, Raipur, Chhattisgarh, India 1.05 cts, Oval 6.20mm X 4.60mm X 4.10mm
Strong Color Change Alexandrite Oval 1.19cts.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $7176.00 Private collection
Natural Alexandrite (Chrysoberyl) Deobhog area, Raipur, Chhattisgarh, India 1.19 cts, Oval 7.30mm X 5.50mm X 3.90mm
Certified Natural Alexandrite Oval 1.34cts.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $9041.25 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Deobhog area, Raipur, Chhattisgarh, India 1.34 cts, Oval 7.50mm X 5.42mm X 4.00mm
Certified Natural Alexandrite Oval 1.09cts.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $7361.25 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Deobhog area, Raipur, Chhattisgarh, India 1.09 cts, Oval 6.50mm X 5.40mm X 3.90mm
Certified Natural Alexandrite Pear 3.06ct.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $12153.75 Private collection
Natural Alexandrite (Chrysoberyl) Tunduru, Ruvuma, Ruvuma Region, Tanzania 3.06 cts, Pear 11.10mm X 6.50mm X 6.30mm
Strong Color Change Alexandrite Tril 1.95cts.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $11268.00 Private collection
Natural Alexandrite (Chrysoberyl) Deobhog area, Raipur, Chhattisgarh, India 1.95 cts, Trillion 7.40mm X 7.40mm X 4.90mm
Certified Fine Natural Alexandrite 1.24cts.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $9261.75 Private collection
Natural Alexandrite (Chrysoberyl) Deobhog area, Raipur, Chhattisgarh, India 1.24 cts, Oval 6.40mm X 5.50mm X 4.40mm
Certified Fine Natural Alexandrite 1.41cts.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $10527.00 Private collection
Natural Alexandrite (Chrysoberyl) Deobhog area, Raipur, Chhattisgarh, India 1.41 cts, Oval 8.06mm X 5.00mm X 4.06mm
Certified Natural 7.0mm Alexandrite 2.16cts.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $20772.00 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Deobhog area, Raipur, Chhattisgarh, India 2.16 cts, Round 7.04mm X 7.00mm X 5.41mm
Certified Natural Alexandrite Oval 2.04cts

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $7380.00 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Deobhog area, Raipur, Chhattisgarh, India 2.04 cts, Oval 9.08mm X 5.77mm X 4.30mm
Certified Natural Alexandrite Trillion 2.03cts.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $14165.25 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Deobhog area, Raipur, Chhattisgarh, India 2.03 cts, Triangle 7.60mm X 7.55mm X 4.76mm
Certified Natural Alexandrite Oval 1.23cts

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $10627.50 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Deobhog area, Raipur, Chhattisgarh, India 1.23 cts, Oval 7.05mm X 5.25mm X 4.06mm
Certified Natural Alexandrite Oval 1.19cts

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $7425.75 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Deobhog area, Raipur, Chhattisgarh, India 1.19 cts, Oval 6.72mm X 5.56mm X 3.70mm
Certified Natural Alexandrite Oval 1.01cts.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $5421.75 Private collection
Natural Alexandrite (Chrysoberyl) Deobhog area, Raipur, Chhattisgarh, India 1.01 cts, Oval 6.80mm X 5.10mm X 3.90mm
Certified Natural Alexandrite Oval 1.33cts.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $6101.25 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Tunduru, Ruvuma, Ruvuma Region, Tanzania 1.33 cts, Oval 7.60mm X 4.90mm X 4.60mm
Certified Strong Color Change Alexandrite 1.04cts.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $4529.25 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Deobhog area, Raipur, Chhattisgarh, India 1.04 cts, Oval 6.40mm X 4.70mm X 4.00mm
Certified Natural Alexandrite Oval 1.03cts.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $2472.00 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Deobhog area, Raipur, Chhattisgarh, India 1.03 cts, Oval 6.59mm X 5.15mm X 3.65mm
Certified Natural Alexandrite Oval 1.31cts.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $6953.25 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Deobhog area, Raipur, Chhattisgarh, India 1.31 cts, Oval 7.90mm X 5.20mm X 4.00mm
Strong Color Change Alexandrite Oval .96ct.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $4608.00 Private collection
Natural Alexandrite (Chrysoberyl) Deobhog area, Raipur, Chhattisgarh, India 0.96 cts, Oval 6.60mm X 5.30mm X 3.20mm
Strong Color Change Alexandrite Oval .47ct.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $1467.00 Private collection
Natural Alexandrite (Chrysoberyl) Deobhog area, Raipur, Chhattisgarh, India 0.47 cts, Oval 5.20mm X 3.70mm X 2.80mm
Fine Strong Color Change Alexandrite 1.23ct.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $7085.25 Private collection
Natural Alexandrite (Chrysoberyl) Deobhog area, Raipur, Chhattisgarh, India 1.23 cts, Oval 6.48mm X 5.03mm
Fine Cut / Good Clarity Alexandrite 3.03cts.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $5889.75 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Tunduru, Ruvuma, Ruvuma Region, Tanzania 3.03 cts, Octagon 12.08mm X 6.92mm X 3.34mm
Top Blue Green Alexandrite Oval 2.15cts.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $11335.50 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Deobhog area, Raipur, Chhattisgarh, India 2.15 cts, Oval 8.15mm X 7.32mm X 4.57mm
Nice Color Change Alexandrite Oval 2.09cts.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $11859.75 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Deobhog area, Raipur, Chhattisgarh, India 2.09 cts, Oval 7.98mm X 7.30mm X 4.55mm
Quality Orissa Alexandrite Oval 1.60cts.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $8295.00 Private collection
Natural Alexandrite (Chrysoberyl) Deobhog area, Raipur, Chhattisgarh, India 1.6 cts, Oval 8.70mm X 6.80mm
Strong Color Change Oval Alexandrite 1.47ct.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $5717.25 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Deobhog area, Raipur, Chhattisgarh, India 1.47 cts, Oval 7.51mm X 6.55mm X 3.71mm
Certified Strong Change Alexandrite 1.79cts.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $6015.00 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Tunduru, Ruvuma, Ruvuma Region, Tanzania 1.79 cts, Oval 7.64mm X 6.55mm X 4.33mm
Certified Natural Alexandrite 2.20cts.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $8448.00 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Tunduru, Ruvuma, Ruvuma Region, Tanzania 2.2 cts, Fancy 9.96mm X 6.59mm X 5.08mm
Certified Natural Alexandrite Oval 1.85cts.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $7806.00 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Tunduru, Ruvuma, Ruvuma Region, Tanzania 1.85 cts, Oval 8.79mm X 6.38mm X 3.86mm
Certified Moderate Color Change Alexandrite

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $2346.00 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Tunduru, Ruvuma, Ruvuma Region, Tanzania 1.7 cts, Oval 7.11mm X 6.40mm X 4.56mm
Certified Natural Alexandrite Oval 1.03cts.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $2719.50 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Deobhog area, Raipur, Chhattisgarh, India 1.03 cts, Oval 6.08mm X 4.33mm X 4.13mm
Certified Moderate Change Alexandrite 3.20cts

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $7296.00 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Tunduru, Ruvuma, Ruvuma Region, Tanzania 3.19 cts, Oval 9.74mm X 7.22mm X 5.36mm
Strong Color Change Alexandrite Cushion

Alexandrite

Grade Score 10 / 10

Price & Availability

RRP: $154563.75 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Deobhog area, Raipur, Chhattisgarh, India 21.41 cts, Cushion 15.50mm X 14.50mm X 10.50mm
Top Gem 6mm Strong Change Alexandrite 1.19cts.

Alexandrite

Grade Score 9 / 10

Price & Availability

RRP: $7853.25 Private collection
Natural Alexandrite (Chrysoberyl) Deobhog area, Raipur, Chhattisgarh, India 1.19 cts, Round 6.00mm X 6.00mm X 4.20mm
Strong Color Change Alex. Oval 2.10cts.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $26208.00 Private collection
Natural Alexandrite (Chrysoberyl) Deobhog area, Raipur, Chhattisgarh, India 2.1 cts, Oval 8.42mm X 6.08mm X 4.78mm
Certified Fine Natural Alexandrite .2.60cts.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $32796.00 Private collection
Natural Alexandrite (Chrysoberyl) Deobhog area, Raipur, Chhattisgarh, India 2.6 cts, Oval 9.69mm X 6.43mm X 4.92mm
Certified Natural Alexandrite Oval 2.70cts.

Alexandrite

Grade Score 6 / 10

Price & Availability

RRP: $20736.00 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Deobhog area, Raipur, Chhattisgarh, India 2.7 cts, Oval 9.25mm X 7.32mm X 4.97mm
Quality Natural Alexandrite Cushion 2.70cts.

Alexandrite

Grade Score 7 / 10

Price & Availability

RRP: $37433.25 Private collection
Natural Alexandrite (Chrysoberyl) Deobhog area, Raipur, Chhattisgarh, India 2.7 cts, Cushion 8.81mm X 6.38mm X 5.29mm
Alexandrite 3.03cts.

Alexandrite

Grade Score 7 / 10

Price & Availability

RRP: $34069.50 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Tunduru, Ruvuma, Ruvuma Region, Tanzania 3.03 cts, Oval 10.32mm X 7.40mm X 4.37mm
Beautuful Color Change Alexandrite 3.38cts.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $38000.25 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Tunduru, Ruvuma, Ruvuma Region, Tanzania 3.38 cts, Trillion 11.40mm X 7.81mm X 5.72mm
Cettified Strong Change Alexandrite Oval 2.15cts.

Alexandrite

Grade Score 7 / 10

Price & Availability

RRP: $18612.00 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Tunduru, Ruvuma, Ruvuma Region, Tanzania 2.15 cts, Oval 8.22mm X 7.22mm X 4.62mm
Nice Color Change Alexandrite Oval 7.46cts.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $50760.00 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Tunduru, Ruvuma, Ruvuma Region, Tanzania 7.46 cts, Oval 12.86mm X 10.50mm X 6.67mm
Quality Alexandrite Pear Shape 2.12cts.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $14319.00 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Tunduru, Ruvuma, Ruvuma Region, Tanzania 2.12 cts, Pear 8.81mm X 7.54mm X 4.92mm
Lively Daylight Green Alexandrite 2.55cts.

Alexandrite

Grade Score 7 / 10

Price & Availability

RRP: $15372.00 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Tunduru, Ruvuma, Ruvuma Region, Tanzania 2.55 cts, Oval 10.15mm X 6.73mm X 4.40mm
Certified Strong Change Alexandrite Oval 3.52cts.

Alexandrite

Grade Score 7 / 10

Price & Availability

RRP: $22911.00 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Tunduru, Ruvuma, Ruvuma Region, Tanzania 3.52 cts, Oval 9.97mm X 7.87mm X 5.55mm
Emerald Cut Alexandrite 5.47cts.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $18018.75 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Tunduru, Ruvuma, Ruvuma Region, Tanzania 5.47 cts, Octagon 13.64mm X 9.04mm X 4.03mm
Certified Fine Natural Alexandrite 4.16cts.

Alexandrite

Grade Score 7 / 10

Price & Availability

RRP: $63933.75 Private collection
Natural Alexandrite (Chrysoberyl) Tunduru, Ruvuma, Ruvuma Region, Tanzania 4.16 cts, Oval 10.44mm X 7.88mm X 5.90mm
Top Gem Quality Natural Alexandrite 8.66cts.

Alexandrite

Grade Score 9 / 10

Price & Availability

RRP: $565325.25 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Tunduru, Ruvuma, Ruvuma Region, Tanzania 8.66 cts, Oval 11.68mm X 10.64mm X 8.72mm
Nice Change Natural Alexandrite Oval 6.36cts.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $42342.75 Private collection
Natural Alexandrite (Chrysoberyl) Tunduru, Ruvuma, Ruvuma Region, Tanzania 6.36 cts, Oval 13.20mm X 8.50mm X 6.50mm
Nice Natural Alexandrite Oval 8.94cts.

Alexandrite

Grade Score 6 / 10

Price & Availability

RRP: $17165.25 Private collection
Natural Alexandrite (Chrysoberyl) Tunduru, Ruvuma, Ruvuma Region, Tanzania 8.94 cts, Oval 13.70mm X 10.60mm X 8.20mm
Strong Change Natural Alexandrite 8.08cts.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $93081.75 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Tunduru, Ruvuma, Ruvuma Region, Tanzania 8.08 cts, Pear 15.80mm X 10.40mm X 7.20mm
Strong Change Natural Alexandrite 7.24cts.

Alexandrite

Grade Score 9 / 10

Price & Availability

RRP: $83405.25 Private collection
Natural Alexandrite (Chrysoberyl) Tunduru, Ruvuma, Ruvuma Region, Tanzania 7.24 cts, Pear 13.40mm X 9.70mm X 8.30mm
Strong Change Natural Alexandrite 13.55cts.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $182112.00 Private collection
Natural Alexandrite (Chrysoberyl) Tunduru, Ruvuma, Ruvuma Region, Tanzania 13.55 cts, Oval 14.20mm X 12.40mm X 9.50mm
Strong Change Natural Alexandrite 10.20cts.

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $97920.00 Private collection
Natural Alexandrite (Chrysoberyl) Tunduru, Ruvuma, Ruvuma Region, Tanzania 10.2 cts, Oval 15.80mm X 10.90mm X 7.20mm
Certified Natural Alexandrite Oval 4.81cts.

Alexandrite

Grade Score 7 / 10

Price & Availability

RRP: $22200.00 Private collection
Natural Alexandrite (Chrysoberyl) Tunduru, Ruvuma, Ruvuma Region, Tanzania 4.81 cts, Oval 12.20mm X 8.40mm X 5.50mm
Certified Natural Alexandrite Cushion 4.12cts

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $22185.75 Private collection
Natural Alexandrite (Chrysoberyl) Tunduru, Ruvuma, Ruvuma Region, Tanzania 4.12 cts, Cushion 9.18mm X 8.87mm X 5.78mm
Gemmy Color Change Alexandrite Oval 5.08cts.

Alexandrite

Grade Score 6 / 10

Price & Availability

RRP: $19507.50 Offered through Multicolour.com
Natural Alexandrite (Chrysoberyl) Tunduru, Ruvuma, Ruvuma Region, Tanzania 5.08 cts, Oval 10.90mm X 9.50mm
Large Collector Alexandrite Oval 6.23cts.

Alexandrite

Grade Score 6 / 10

Price & Availability

RRP: $16747.50 Private collection
Natural Alexandrite (Chrysoberyl) Tunduru, Ruvuma, Ruvuma Region, Tanzania 6.23 cts, Oval 14.00mm X 9.80mm
Bright Alexandrite Oval 5.16cts Super Value!

Alexandrite

Grade Score 8 / 10

Price & Availability

RRP: $19815.00 Private collection
Natural Alexandrite (Chrysoberyl) Tunduru, Ruvuma, Ruvuma Region, Tanzania 5.16 cts, Oval 12.00mm X 9.30mm
Certified Strong Change Alexandrite 21.23cts

Alexandrite

Grade Score 7 / 10

Price & Availability

RRP: $38251.50 Private collection
Natural Alexandrite (Chrysoberyl) Tunduru, Ruvuma, Ruvuma Region, Tanzania 21.23 cts, Cushion 16.02mm X 11.90mm X 11.33mm
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Bibliographic details
Page title Browse gemstones by Phenomena: Change of color (Alexandrite effect)
Author David Weinberg
Website title Alexandrite Tsarstone Collectors Guide
Date published 03 July 2010 05:05 UTC
Date accessed 09 August 2026 12:43 UTC
Permanent link http://w.alexandrite.com/viewpage.html?id=ALXS-011-00001
AMA style
David Weinberg. "Browse gemstones by Phenomena: Change of color (Alexandrite effect)". In Alexandrite Tsarstone Collectors Guide. July 03, 2010, 05:05 UTC. Available at: http://w.alexandrite.com/viewpage.html?id=ALXS-011-00001. Accessed August 09, 2026.
APA style
"Browse gemstones by Phenomena: Change of color (Alexandrite effect)". (2010, July 03). In Alexandrite Tsarstone Collectors Guide. Retrieved 12:43, August 09, 2026, from http://w.alexandrite.com/viewpage.html?id=ALXS-011-00001.
Bluebook style
"Browse gemstones by Phenomena: Change of color (Alexandrite effect)", http://w.alexandrite.com/viewpage.html?id=ALXS-011-00001 (last visited August 09, 2026).
Bluebook: Harvard JOLT style
See Alexandrite Tsarstone Collectors Guide, "Browse gemstones by Phenomena: Change of color (Alexandrite effect)", http://w.alexandrite.com/viewpage.html?id=ALXS-011-00001 () (as of Aug. 09, 2026, 12:43 GMT).
CBE/CSE style
David Weinberg. "Browse gemstones by Phenomena: Change of color (Alexandrite effect)". In Alexandrite Tsarstone Collectors Guide. 2010 Jul 03, 05:05 UTC.[Internet], Alexandrite Tsarstone Collectors Guide; 2010 Jul 03, 05:05 UTC [cited 2026 Aug 09]. Available from: http://w.alexandrite.com/viewpage.html?id=ALXS-011-00001.
Chicago style
David Weinberg, "Browse gemstones by Phenomena: Change of color (Alexandrite effect)", http://w.alexandrite.com/viewpage.html?id=ALXS-011-00001, (accessed August 09, 2026).
MLA style
"Browse gemstones by Phenomena: Change of color (Alexandrite effect)". Alexandrite Tsarstone Collectors Guide. 03 Jul 2010, 05:05 UTC. 09 Aug 2026 http://w.alexandrite.com/viewpage.html?id=ALXS-011-00001
MHRA style
David Weinberg, "Browse gemstones by Phenomena: Change of color (Alexandrite effect)", Alexandrite Tsarstone Collectors Guide, 03 July 2010, 05:05 UTC, http://w.alexandrite.com/viewpage.html?id=ALXS-011-00001 [accessed 09 August 2026].
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