Natural Gemstones - Loose Precious & Semi Precious Gemstones

buy high quality natural gemstones fast shipping gem offer at great prices

Opal Value Adjustmets

Opal Value Adjustmets loose sale price & solid Australian black Opal Gemstone Information

Characteristics & Description	All Opal	Black & Black Crystal	Black & Black Crystal
	Exept Black	Blue-Green	Red-Orange
		Range of Fire Color	Range of Fire Color
Fire Color
Blue Only	-0.50	-0.40
Green Only	-0.10	-0.20
Blue-Green	-0.00	-0.05
Green-Blue	-0.00	-0.00
Green-Orange	+0.05	+0.10
Orange-Green	+0.10		-0.20
Red Only	-0.00		-0.20
Orange-Red	+0.10		-0.10
Multicolor	+0.10		-0.00
Red Multicolor	+0.20		+0.10
Red-Blue Multicolor	+0.25		+0.20

Saturisation of Fire
Dull	-0.10
Average	-0.00
Vivid	+0.20

Pattern
Pinfire & Small Flashfire	-0.10
Flashfire	-0.00
Broad Flashfire	-0.00
Rolling Flashfire	+0.10
Harlequin	+0.20
Rare Pattern & Picture Stones	+0.00 to +.0.20

Dome
Low dome	-0.10
Medium dome	-0.00
High dome	+0.05

Cut
Poor cut or finish	-0.10 to -0.50
Excessively fat cut	-0.10 to -0.50

Shape
Standard Oval	+0.10
Freesize Oval & Other Standard Shapes	-0.00
Freeform Shapes	-0.20

Inclusions
Badly Included	-0.20 to -0.50
Slightly Included	-0.10
Not Included	-0.00

Consistency of Base Color, Brightness and Pattern
Major Dull Spot	-0.20
Minor Dull Spot	-0.10
Undesirable Pattern Mix	-0.10 to -0.20
Distracting Variations in Base Color	-0.10 to -0.20
Consistent	-0.00

Directionality of Fire
Highly Directional	-0.30
Very Directional	-0.20
Somewhat Directional	-0.05
Slightly Directional	-0.00

Weight
Less than 1 Carat	-0.20
1 Carat to 20 Carats	-0.00
20 Carats to 40 Carats	-0.20
40 Carats plus	-0.30

High Price Adjustment
$1.00 to $1000	1.00 x Estimated Price
$1000 to $3000	0.95 x Estimated Price
$3000 to $5000	0.87 x Estimated Price
$5000 to $7500	0.80 x Estimated Price
$7500 to $10000	0.75 x Estimated Price
$10000 or more	0.70 x Estimated Price

SwissGemShop - Loose Precious & Semi Precious Gemstones - Gemstone at sale price in Jewelry quality. A lot of Gem information, learn about Gemstones !

Swiss Gem Shop loose Gemstone at Sale price and Gemstone Information