citrine

Citrine is a transparent, yellow variety of Quartz, ranging in color from pale to golden yellow, honey or almost brown. The name is derived from Latin citrina which means yellow. Natural citrines are rare; most commercial citrines are heat-treated amethysts or smoky quartzes.

Mohs hardness 7 

Citrine Treatments:-

                                      Routinely produced by heat-treatment of (smoky) amethyst: reddish tint, may show reddish-brown hematite inclusions (surrounded by crack). Non-dichroic unlike natural - Blue Chart Gem Identification, Herve Nicolas Lazzarelli, 2010, p 7

Significant Gem Localities:- 

 Sources of citrine include Brazil, Bolivia, Burma (Myanmar), Canada, Madagascar, Sri Lanka, Uruguay, several African countries and parts of the Soviet Union.

WEIGHT PER PIECE OF CITRINE
OVAL SHAPE		OCTAGON SHAPE		PEAR SHAPE		ROUND SHAPE		SQUARE SHAPE
SIZE	WEIGHT	SIZE	WEIGHT	SIZE	WEIGHT	SIZE	WEIGHT	SIZE	WEIGHT
5*3MM	0.22	5*3MM	0.32	5*3MM	0.21	3MM	0.1	3*3MM	0.15
5*4MM	0.31	6*4MM	0.55	6*4MM	0.38	4MM	0.21	4*4MM	0.35
6*4MM	0.4	7*5MM	0.95	7*5MM	0.56	5MM	0.45	5*5MM	0.58
7*5MM	0.7	8*6MM	1.55	8*5MM	0.9	6MM	0.8	6*6MM	0.98
8*6MM	1.15	9*7MM	2.1	8*6MM	1.1	7MM	1.25	7*7MM	1.7
9*7MM	1.61	10*8MM	2.85	9*6MM	1.26	8MM	2	8*8MM	2.68
10*8MM	2.4	11*9MM	3.81	10*7MM	1.71	9MM	2.42	10*10MM	4.78
11*9MM	2.88	12*10MM	5.47	12*8MM	2.58	10MM	3.34
12*10MM	3.8	14*10MM	6.96
14*10MM	5.02