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CITRINE     Gem Species:  QUARTZ     Hardness:  7     Density:  2.66     RI:  1.54
 as you know, virtually all Citrine is heat treated Amethyst. This is some rare unheated Citrine. You'll notice the color is slightly brown compared to heated goods. Very unusual and rare.
StockID Image Color Size Cut Shape
Quality
Clarity
Notes

Lot
Weight

Lot
Size
Price # of Lots Cart Qty
302346 gold 9x7mm oval bufftop fine AAA & more 1.47ct 1 for
$35.70
unlike
SOLD

HELENITE (lab)     Gem Species:  SILICATE     Hardness:  5     Density:  2.4     RI:  1.49
 The CLOVER cut is back! This is a very popular cut you will find only at Optima Gem. Use in standard 4prong round settings. If you want to set in the groove use a mounting 1 size smaller than the size listed.
StockID Image Color Size Cut Shape
Quality
Clarity
Notes

Lot
Weight

Lot
Size
Price # of Lots Cart Qty
431821 fine red 12mm square cushion fine AAA & more 5.85ct 1 for
$56.70

High Bid - Buy Now
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HELENITE (lab)     Gem Species:  SILICATE     Hardness:  5     Density:  2.4     RI:  1.49
 The Helenites we're offering on Auction are in an Optima Exclusive cutting shape called Tripod. These fit in trillion settings or work great with wire wrap. These are difficult to cut and therefore costly for us. Subsequently, we will no longer be cutting them, so the stock we have is probably all you'll ever see in the market. Our Reverse Auction gives you the opportunity to get one of these at a great price. In some of the sizes, we have more than one, so if you want a pair, we can do it.
StockID Image Color Size Cut Shape
Quality
Clarity
Notes

Lot
Weight

Lot
Size
Price # of Lots Cart Qty
431676 grass green 9mm tripod fine AAA & more 1.73ct 1 for
$25.05
unlike

RHODOLITE     Gem Species:  GARNET     Hardness:  7     Density:  3.7     RI:  1.75
 Rhodolite from Tuliar, Madagascar
StockID Image Color Size Cut Shape
Quality
Clarity
Notes

Lot
Weight

Lot
Size
Price # of Lots Cart Qty
424632 rose 7.3x5.3mm emerald barion fine AAA 1.54ct 1 for
$40.50
unlike
SOLD

RUBY     Gem Species:  CORUNDUM     Hardness:  9     Density:  3.95     RI:  1.76
StockID Image Color Size Cut Shape
Quality
Clarity
Notes

Lot
Weight

Lot
Size
Price # of Lots Cart Qty
661441 fine pink 4x2mm marquise well AA+ matched 0.48ct 5 for
$58.50
unlike
SOLD
661306 deep red 4.2x3.2mm oval poor AA+ pair, raspberry tint 0.49ct 2 for
$89.25

High Bid - Buy Now
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SILICON (lab)     Gem Species:  SILICON     Hardness:  7     Density:  2.3     RI:  1.49
 Made from material used in semiconductors. Looks like polished metal and has a mirror finish but is lightweight.
StockID Image Color Size Cut Shape
Quality
Clarity
Notes

Lot
Weight

Lot
Size
Price # of Lots Cart Qty
522553 silver 11mm round brilliant fine AAA 3.72ct 1 for
$38.85

High Bid - Buy Now
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TOURMALINE     Gem Species:  TOURMALINE     Hardness:  7     Density:  2.82     RI:  1.61
 Rare golden material from Nigeria.
StockID Image Color Size Cut Shape
Quality
Clarity
Notes

Lot
Weight

Lot
Size
Price # of Lots Cart Qty
824495 gold-yellow 8x6mm cushion fine AAA 1.38ct 1 for
$66.60

High Bid - Buy Now
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ZINCITE     Gem Species:  ZINCITE     Hardness:  4     Density:  5.68     RI:  2.02
 rough and specimen from Poland.
StockID Image Color Size Cut Shape
Quality
Clarity
Notes

Lot
Weight

Lot
Size
Price # of Lots Cart Qty
522733 orange-brown 25mm crystal & more, premium selection 10ct 1 for
$30.75

High Bid - Buy Now
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522734 orange-gold 25mm crystal & more, premium selection 12ct 1 for
$35.70

High Bid - Buy Now
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PRASIOLITE     Gem Species:  QUARTZ     Hardness:  7     Density:  2.65     RI:  1.54
 green Quartz, sometimes referred to as "green Amethyst". Normally heat treated Amethyst yields Citrine, but this new mine produces Amethyst that heats to this interesting green color.
StockID Image Color Size Cut Shape
Quality
Clarity
Notes

Lot
Weight

Lot
Size
Price # of Lots Cart Qty
641133 light green 11mm square cushion fine AAA & more 4.75ct 1 for
$61.65
like

HELENITE (lab)     Gem Species:  SILICATE     Hardness:  5     Density:  2.4     RI:  1.49
 The Helenites we're offering on Auction are in an Optima Exclusive cutting shape called Tripod. These fit in trillion settings or work great with wire wrap. These are difficult to cut and therefore costly for us. Subsequently, we will no longer be cutting them, so the stock we have is probably all you'll ever see in the market. Our Reverse Auction gives you the opportunity to get one of these at a great price. In some of the sizes, we have more than one, so if you want a pair, we can do it.
StockID Image Color Size Cut Shape
Quality
Clarity
Notes

Lot
Weight

Lot
Size
Price # of Lots Cart Qty
431678 grass green 12mm tripod fine AAA & more 4.20ct 1 for
$60.00
like

OPAL     Gem Species:  OPAL     Hardness:  5.5     Density:  1.98     RI:  1.37
 We took all our scraps from years of sorting rough and cut them. Wide range from Mexican to Australian, white, clear and black. View the large gallery picture and select the ones you want.
StockID Image Color Size Cut Shape
Quality
Clarity
Notes

Lot
Weight

Lot
Size
Price # of Lots Cart Qty
583207 multicolor mm you select well AA & more 0.90ct 1 for
$9.00
unlike
583208 multicolor mm you select well AA & more 1.35ct 1 for
$33.00
unlike
583210 multicolor mm you select well AA & more 2.84ct 1 for
$49.50
like
583211 multicolor mm you select well AA & more 1.48ct 1 for
$73.50
like
583212 multicolor mm you select well AA & more 4ct 1 for
$118.50
like

AGATE     Gem Species:  QUARTZ     Hardness:  7     Density:  2.65     RI:  1.54
StockID Image Color Size Cut Shape
Quality
Clarity
Notes

Lot
Weight

Lot
Size
Price # of Lots Cart Qty
641421 green/red 18.5mm round cab well AA 14.23ct 1 for
$8.25
like

AMETHYST     Gem Species:  QUARTZ     Hardness:  7     Density:  2.66     RI:  1.54
StockID Image Color Size Cut Shape
Quality
Clarity
Notes

Lot
Weight

Lot
Size
Price # of Lots Cart Qty
133718 purple 50x36x17mm crystal AA+ 164ct 1 for
$28.50
like
133695 deep purple 27.8x12.8mm pearshape fine AAA 9.71ct 1 for
$178.35
like
133715 purple 27x27x27mm rough A 117ct 1 for
$17.85
like
133712 purple 60x23x17mm rough A+ 168ct 1 for
$35.70
like

AMETHYST     Gem Species:  QUARTZ     Hardness:  7     Density:  2.66     RI:  1.54
 Lepidochrosite inclusions provide a rare and unusual sparkle
StockID Image Color Size Cut Shape
Quality
Clarity
Notes

Lot
Weight

Lot
Size
Price # of Lots Cart Qty
133842 fine purple 22x17mm shield fine AA+ 31.42ct 1 for
$292.50
like

AQUAMARINE     Gem Species:  BERYL     Hardness:  7.5     Density:  2.72     RI:  1.58
StockID Image Color Size Cut Shape
Quality
Clarity
Notes

Lot
Weight

Lot
Size
Price # of Lots Cart Qty
221087 light blue 10x7.3mm emerald rolltop fine AAA 3.22ct 1 for
$292.50
like
221088 light blue 12.3x10mm oval fine AA 4.74ct 1 for
$172.80
like

BENITOITE     Gem Species:  BENITOITE     Hardness:  6     Density:  3.68     RI:  1.77
 one of the rarest gems on earth. The only mine in California has closed so the old material may be some of the last.
StockID Image Color Size Cut Shape
Quality
Clarity
Notes

Lot
Weight

Lot
Size
Price # of Lots Cart Qty
523066 fine blue 4mm octagon GEM AA+ 0.40ct 1 for
$640.65
like

BYTOWNITE     Gem Species:  FELDSPAR     Hardness:  6     Density:  2.62     RI:  1.52
StockID Image Color Size Cut Shape
Quality
Clarity
Notes

Lot
Weight

Lot
Size
Price # of Lots Cart Qty
761717 light yellow 16mm round brilliant well AA+ 14.98ct 1 for
$145.95
like

CITRINE     Gem Species:  QUARTZ     Hardness:  7     Density:  2.66     RI:  1.54
StockID Image Color Size Cut Shape
Quality
Clarity
Notes

Lot
Weight

Lot
Size
Price # of Lots Cart Qty
302421 light yellow 13x8.3mm emerald barion good AAA 4.40ct 1 for
$35.70
like

CITRINE     Gem Species:  QUARTZ     Hardness:  7     Density:  2.66     RI:  1.54
 Oro Verde material from Brazil is low level radiated to produce this very slightly green tinted Citrine
StockID Image Color Size Cut Shape
Quality
Clarity
Notes

Lot
Weight

Lot
Size
Price # of Lots Cart Qty
302503 yellow 25x13mm oval well AAA 21.56ct 1 for
$105.45
like
302502 yellow 31x22mm oval fair AAA 52.31ct 1 for
$170.25
like

CITRINE     Gem Species:  QUARTZ     Hardness:  7     Density:  2.66     RI:  1.54
 Tumbled
StockID Image Color Size Cut Shape
Quality
Clarity
Notes

Lot
Weight

Lot
Size
Price # of Lots Cart Qty
302418 yellow-gold 15mm facet rough AAA & more 50ct 7 for
$19.50
like

CUBIC ZIRCONIA     Gem Species:  CUBIC ZIRCONIA     Hardness:  8.5     Density:  5.8     RI:  2.15
StockID Image Color Size Cut Shape
Quality
Clarity
Notes

Lot
Weight

Lot
Size
Price # of Lots Cart Qty
523192 yellow-gold 12x6mm marquise well AAA 3.76ct 1 for
$7.50
unlike
SOLD
523191 yellow-gold 9mm round brilliant fine AAA small inclusion 3.42ct 1 for
$7.50
like
523190 red 9.5mm round brilliant well AAA 5.68ct 1 for
$13.50
like

EMERALD     Gem Species:  BERYL     Hardness:  7.5     Density:  2.72     RI:  1.58
StockID Image Color Size Cut Shape
Quality
Clarity
Notes

Lot
Weight

Lot
Size
Price # of Lots Cart Qty
400795 medium green 3.5x2.5mm pearshape well AA 0.35ct 3 for
$40.50
like

EMERALD (lab)     Gem Species:  BERYL     Hardness:  7.5     Density:  2.72     RI:  1.58
StockID Image Color Size Cut Shape
Quality
Clarity
Notes

Lot
Weight

Lot
Size
Price # of Lots Cart Qty
410485 fine green 5x3mm marquise fine AA+ 0.32ct 2 for
$16.20
like
410482 fine green 5.5mm round brilliant fine AAA nice pair 1.20ct 2 for
$55.05
like

EMERALD (lab)     Gem Species:  BERYL     Hardness:  7.5     Density:  2.72     RI:  1.58
 Flux
StockID Image Color Size Cut Shape
Quality
Clarity
Notes

Lot
Weight

Lot
Size
Price # of Lots Cart Qty
410484 fine green 7x5mm emerald step fine AA 0.97ct 1 for
$118.35
like

FIRE AGATE     Gem Species:  QUARTZ     Hardness:  7     Density:  2.65     RI:  1.54
 These were cut and polished by an old time collector. We adapted our clarity grading for level of beauty and color play: AAA best, AA+ very nice, AA nice, A+ decent, A weak.
StockID Image Color Size Cut Shape
Quality
Clarity
Notes

Lot
Weight

Lot
Size
Price # of Lots Cart Qty
641363 brown/multi 23x20x9mm freeform good AA 35ct 1 for
$88.50
like
641368 brown/multi 15x20x12mm freeform cab good A 56ct 1 for
$13.50
like
641398 brown/multi 18x14x7mm freeform cab well AA+ 15ct 1 for
$58.50
like
641403 brown/multi 19x15x6mm freeform cab well AAA 18.20ct 1 for
$148.50
like
641388 brown/multi 21x18x8mm freeform cab good A+ 19.70ct 1 for
$28.50
like
641382 brown/multi 26x22x9mm freeform cab good A+ 42.10ct 1 for
$43.50
like
641391 brown/multi 27x18x6mm freeform cab well AA+ 18.60ct 1 for
$73.50
like
641377 brown/multi 27x22x5mm freeform cab good AA 25.40ct 1 for
$88.50
like
641389 brown/multi 28x15x7mm freeform cab good AA 21.90ct 1 for
$58.50
like
641397 brown/multi 28x21x7mm freeform cab well AA+ 36.60ct 1 for
$148.50
like
641378 brown/multi 29x18x17mm freeform cab good AA 27.70ct 1 for
$58.50
like
641395 brown/multi 32x17x5mm freeform cab well AA+ 24.80ct 1 for
$148.50
like
* $5 Handling fee waived with $100 purchase, Free First Class shipping (US) with $200 order (in stock items).
   1 of 106 pages    
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