OVERTONE CHARTS (Continued…)

The following is a chart showing overtones certain gemstones are likely to have.

NAME OF GEMSTONE          OVERTONES          CLASSIFICATION

TOURMALINE
———————————————————————————————————–

[Green]
Pure Green +yellow undesirable
+blue good
+brown bad
+gray bad
Blue-Green +yellow bad in excess
+brown bad
+gray bad
Chrome-Green +yellow bad
+brown bad
+gray bad
+blue good
[Pink]
Pure Pink +yellow bad
+brown bad
+blue good
Brown Pink +gray bad
+yellow bad
+blue good
+gray bad
[Rubellite]
Hot Pink +yellow bad
+blue good
+brown bad
Red +gray bad
+yellow bad
+blue good except in excess
+brown bad
+gray bad
[Bi-Colors]
Pink or Green +yellow bad
+blue good (hot pink)
+brown bad
+gray bad
Red or Green +yellow bad
+blue good
+brown bad
+gray bad
[lndicolite (Blue
Tourmaline)]
Blue +brown bad
+gray bad

ZIRCON
———————————————————————————————————–

[Red to Brown] +yellow bad
+gray bad
+green bad
+red good
[Blue] +brown bad
+gray bad
+yellow bad
+green bad
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OVERTONE CHARTS (Continued…)

The following is a chart showing overtones certain gemstones are likely to have.

NAME OF GEMSTONE          OVERTONES          CLASSIFICATION

SPINEL
———————————————————————————————————–

[Red Spinel] +brown bad
+gray bad
+blue good except in excess
+yellow bad
[Blue Spinel] +gray bad
+purple acceptable in minute
amounts but not
Desirable
[Orange (Flame)] +brown bad
+red acceptable
+gray bad
[Purple & Lavender
Spinel]
+brown bad
+gray bad
+pink good
+blue good
+green bad

SPODUMENE (Kunzite)
———————————————————————————————————–

[Pink or Purple] +yellow bad
+gray bad

TANZANITE
———————————————————————————————————–

[Blue] +brown bad
+gray bad
+purple acceptable but not
Preferable

IMPERIAL TOPAZ
———————————————————————————————————–

[Yellow, Orange & Red] +yellow bad
+brown bad
+gray bad
+pink good
[Pink] +yellow bad
+brown bad
+gray bad
+blue good (hot pink)