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Popular gemstones and cabochons:

Amazonite
Amethyst
Ammonites
Astrophyllite
Atlanticite
Biggs Jasper
Black Onyx
Bloodstone
Blue Topaz
Bruneau Jasper
Butterfly Jasper
Carved Stones
Charoite
Chinese writing
Collectors items
Copper Stones
Coral
Covellite
Cuprite
Dalmatian stone
Deschutes
Diamonds
Discounts
Druzy, Agate
Druzy, black 
Druzy, blue
Druzy, drilled
Druzy, Glacier
Druzy, Jasper
Druzy, Pink cob
Druzy, Platinum
Druzy, Rainbow
Druzy, Titanium
Druzy uvarovite
Druzy, quartz
Eudialyte
Faceted gems
Fancy Jasper
Fossilized Coral
Fossils
Hemimorphite
Imperial Jasper
Landscape jasp
Lapis
Larimar
Lightning Jasper
Malachite
Melee Diamonds
Mexican Lace
Mookaite
Moss Agates
Obsidian
Ocean Jasper
Ocean Wave
Owyhee Jasper
Paint Rock

Parrot Wing
Peanutwood
Pearls
Peridot
Petoskey Stone
Pietersite
Poppy Jaspers
Psilomelane
Rainforest Jasp
Rhodonite
Rock Crystal
Rutilated quartz
Seraphinite
Shells
Silver Stones
Spiderweb Obs Stone Sets
Sugilite
Tinguaite
Turquoise

Unakite        
Zebra Agate

quick guide:

 1" = 25mm

1/2"=13mm

1/4"=6.5mm

 

Heart of Stone Studio is proud to begin offering faceted gemstones. More and more customers are now adding faceted stones to their pieces, either to complement their cabochons or drusies, or as an accent piece in their design. Either way, faceted stones attract the eye and bring in the buyers. We are now proud to offer:

Melee Diamonds ó  Faceted Colored Gems ó  Semi-Precious Cabochons ó  Boulder Opals   ó Synthetic Stones for PMC and Casting


Melee Diamonds

Melee Diamonds are genuine diamonds that are small, usually less than a third of a carat. They are surpisingly affordable, yet add tremendous value to the price that you can command for a piece. These melee diamonds are very special--I purchased them from a highly reputable dealer in Belgium. In fact, you can't get diamonds like these from the usual American sources. The usual American suppliers who carry melee diamonds offer them in clarities of VS2 or I or I2. These diamonds are all much higher grades of clarity. And, these diamonds are colorless, with color grades of D,E. The usual melee diamonds sold in the States are color grades G-I, which are much darker.

These diamonds may be small, but they have white-hot fire and sparkle. They are ideal cut, which is the technical term for excellent symmetrical cut and proportion. Because these diamonds are such top quality, their price is a little higher than what you might find for discount melee diamonds, but I guarantee you that they are worth it. In fact, I recommend against buying these if you're planning to set them with a lower-priced larger diamond--they are so bright they might make the bigger diamond look dark by comparison. Instead, I recommend them using them as accent diamonds--you won't need a lot of these; in fact, a single one will add a brilliant point of light to your piece.  Important note: These diamonds are conflict free, that is, guaranteed to be purchased from legitimate sources not involved in funding conflict, in compliance with United Nations resolutions.

Above is a photo showing how the various-sized diamonds that we offer compare to a 5mm round colored stone (in center). Actual diameter of each diamond in millimeters is listed below. You can click on the photo to get a better look. Any irregularities in the shape of the stones is a product of my poor photographic skills, not in the diamonds themselves. Please note: I have a limited supply of these on hand, although larger quantities can be backordered for you. Available quantities in stock are listed next to each stone. If you wish to order more than one stone, simply change the number in the quantity box, to a maximum equal to the number available.

New: Larger Melee Diamonds, VVS clarity (VVS clarity means "Very very slight" inclusions, hardly noticeable under 10X magnification)

After a long period of unchanging price tags, melee diamond prices are headed up. So, before they become unaffordable, I've obtained some top-quality melee to offer to my discerning customers. These medium and larger stones have the brilliance of stars in a night sky, and are suitable for the finest jewelry designs. All are ideal-cut, colorless (D-E), from Antwerp. Guaranteed conflict-free. Your satisfaction is guaranteed.

Melee Diamond .04ct VVS
Average diam: 2.2 mm
FCT04-VVS    $60.00 each      8 currently available

Quantity:



Melee Diamond .05ct VVS
Average diam: 2.4 mm
FCT05-VVS    $71.50 each      10 currently available

Quantity:



Melee Diamond .06ct VVS
Average diam: 2.5 mm
FCT06-VVS    $87.50 each      10 currently available

Quantity:



Melee Diamond .07ct VVS
Average diam: 2.7 mm
FCT07-VVS    $96.75 each      1 currently available

Quantity:



Smaller Melee Diamonds, VS clarity (VS clarity means "very slight" inclusions)

Melee Diamond .02 ct (VS)
Average diam: 1.7 mm
FCT02   $23.65 each   1 currently available

Quantity:



Melee Diamond .03ct (VS)
Average diam: 2.0 mm
FCT03   $36.85 each  2 available

Quantity:



Melee Diamond .07ct (VS)
Average diam: 2.7 mm
FCT07    $84.70 each  1 available

Quantity:



Are you interested in obtaining larger, top-quality diamonds at a great price? I can get them for you!  Just E-mail me!


Colored Gemstones

As with everything else on my website, I have specially selected these stones for their beauty and quality. I have worked hard to make the colors in the photos accurate, but please refer to the written descriptions as well. 

Judy's Special Rating System: To help in your assessment and selection, I have personally inspected each and every stone under a 10-power scope and I have rated it E=Excellent, VG+=Really, really good, VG=Very Good, G+=Pretty darn good, G=Good. Regardless of the rating, your satisfaction is guaranteed. Prices depend not only on the type of stone, but its color, cut and clarity, as well as the supplier. The number of stones I currently have in stock follows the price. If you wish to order more than one stone, simply change the number in the quantity box, to a maximum equal to the number available.

Blue Topaz

London Blue Topaz
8mm trillion   E=Excellent cut and clarity with lots of flash and rich, deep blue color.

FCT36  $38.50 each    3 available

Quantity:






London Blue Topaz

9mm round  E=Excellent overall; color is more intense than this photo indicates.
FCT37  $40.00 each    
1 available

Quantity:


 

London Blue Topaz 
5 mm round      VG=color, very nice but lighter, medium-blue color; G+=cut; eye-clean 
FCT35   $5.50 each    
1 available

Quantity:



Amethyst



Amethyst and Citrine
   
7mm trillion    E=Excellent cut with lots of sparkle; wonderful light lavender is possible because these stones were cut from the area where amethyst grades into citrine.
 
FCT4    $13.50 each    
3 available

Quantity:




Amethyst
9 x 7 mm oval   Cut and clarity=VG+. There is some color zoning, but it is bi-color rather than color/no color, so the zoning actually adds depth and interest to the stone.
FCT18   $29.50 each  
3 available

Quantity:



 

Peridot

Peridot
9 x 7 mm oval  Color=E, Clarity=G. These stones contain one or two miniscule nodules, probably of manganese, which are common to peridot, but they are hardly noticeable.
FCT10  $29.50 each    
2 available

Quantity:



 

Peridot
8mm trillion  Color=E, Clarity=G-. These stones are beautiful, with lots of sparkle and flash. However, if you peer really closely at them, you can make out the teensy natural black inclusions. But frankly, I admired them for a week and didn't notice the inclusions until I put them under the scope. Otherwise, they would be much more expensive.
FCT11  $18.50 each  
4 available

Quantity:


 



Peridot
 
4 mm trillion  Cut, color, and clarity are all VG+
FCT12   $4.00 each    21 available

Quantity:





Peridot

6 mm round  Color, cut and clarity=VG+. Color ranges from medium green to olive green. 
FCT13   $14.95 each    
5 available

Quantity:



Garnet

 


Garnet, Almandine or Pyrope 
8mm round   Cut, color, clarity=E.
FCT43   $24.00 each 
 Sorry, Sold Out!

Quantity:



 

Star Rubies

I have bought Star Rubies at the Tucson show in the past, but these far surpass what I have carried on the site previously. These are high quality, with rich, deep color and beautiful clear asterism (star). I am thrilled to have found them; unfortunately, my photos don't do them justice. These are all that I will have in stock until September. Your satisfaction is guaranteed.

 

I have photographed these all together, so you can get an idea of their relative sizes (images are greatly enlarged; see measurements below for actual size). The second photo is deliberately overexposed to show you what they look like from the side (the largest stone, FCT109, is shown separately, below). All genuine ruby (corundum). To order: Select the stone you want using the picture, and then click the add-to-cart button below for its item number:

Star Ruby    Sri Lanka
6.2 x 5 x 4mm thick, weight: 1.67 ct.
FCT105    $85.00




Star Ruby   
Sri Lanka
6.2 x 5.8 x 4mm thick, weight: 1.9 ct.
FCT106    $96.50




Star Ruby   
Sri Lanka
9 x 7.6 x 3.4mm thick, weight: 2.6 ct.
FCT107    $117.50  
Sorry, Sold!




Star Ruby   
Sri Lanka
7.8 x 7.3 x 5.2mm thick, weight: 3.71 ct.
FCT108    $204.50  
Sorry, Sold!





Star Ruby   
Sri Lanka (Also shown at the top of the photo above)
10 x 9 x 7mm thick, weight: 7.69 ct. 
FCT109    $385.00  
Sorry, Sold!


 

 


Colored Gemstones

Ever since the time I visited an exhibition of the great Rene Lalique's jewelry from the turn of the century, I've refused to work with opals---Despite their shimmering beauty, every last one of Lalique's opals was cracked. Boulder Opals, I think, are a lovely alternative because the opal areas are left in their natural matrix, which offers them protection. And, any seams or cracks that naturally occur fit right in with the character of the stone. This Boulder Opal comes from the Quilpie Mining Area, approx. 650 west of Brisbane in southwest Queensland, Australia. All the pendants are drilled laterally.

Boulder Opal Drilled Pendant    Australia
23.5 x 22mm 6-9mm thick
FCT135    $74.00



 

 

 

Boulder Opal Drilled Pendant    Australia
35 x 26mm, 10mm thick
FCT136    $58.50



 

 

 

 

Boulder Opal Drilled Pendant    Australia
The sea green opal fissures dance around the entire piece. 34 x 18mm, 9.5mm thick
FCT137    $78.00



 

 

 

 

Boulder Opal Drilled Pendant    Australia
25 x 20.5mm, 11mm thick
FCT138    $68.00


 

 

 

 

Boulder Opal Drilled Pendant    Australia
22 x 19mm. 9.5mm thick
FCT139    $68.00



 

 

 

Boulder Opal Drilled Pendant    Australia
44 x 18mm, 13mm thick
FCT140    $54.00 
Sorry, Sold!

 


 

 

 

 

Boulder Opal     Australia
41 x 22mm, 5.5mm thick, not drilled
FCT141    $76.50 
Sorry, Sold!



 

 

 

 

 


Colored Gemstones

If you go poking around the castles and museums of Europe, you might be surprised to see that the really old gemstones--set in things like crowns and sword hilts--were not faceted. They were cabochons like the ones below! So, if you aren't into setting faceted stones, that's OK, because using precious and semi-precious cabs makes you part of an ancient and revered tradition. Because these stones are much larger than most faceted stones and are totally natural, they will naturally contain the usual inclusions, which aren't especially noticeable. In fact, all of these look terrific in person.
 

 


Amethyst Cabochon   
South America
13 x 9.6 mm teardrop, rounded back

FCT88    $38.00


 
 



Amethyst Cabochon Pair   
South America
12 mm round pair 
FCT91    $88.00   
Sorry, Sold!


 

 


Colored Gemstones

As gem-manufacturing technology improves, the market is exploding with synthetic gems. These are wonderful stones for PMC artists: Because of their heat-resistant properties, they are said to be able to withstand the heat of kiln-firing of precious metal clays (PMC), and can be cast in place as well (remember to allow for the metal's shrinkage). These also are great for use in stone-setting practice. However, I can't guarantee them 100% as they might be subject to darkening or a slight color change depending upon the level and extent of firing. I suggest that you purchase a couple extra and experiment with them first before using them in your final piece. I have posted how many of each type I currently have in stock, so you can easily order multiples by simply changing the number in the quantity box.  I can quickly backorder more for you if you wish.

 

 Cubic Zirconia (CZ) Rounds  Available in three sizes:

Shown at left: CZ 4mm round
FCT98s   $0.40 each    Quantity in stock: 98
 
Quantity:


 
       
Shown at right: CZ 5mm round
FCT99s   $0.60 each    Quantity in stock: 45
 
Quantity:


 
       
Not shown: CZ 6mm round
FCT100s    $1.30 each    Quantity in stock: 2
 
Quantity:


 


 

Cubic Zirconia (CZ) Princess Cut
3mm square
FCT97s   $0.55 each    Quantity in stock: 45

Quantity:


 

Cubic Zirconia (CZ) Trillion
5 x 5mm trillion
FCT101s   $0.90 each    Quantity in stock: 15

Quantity:





Synthetic White Sapphire
.05ct, 2.2mm round
FCT95   $0.75 each  Quantity in stock: 5

Quantity:


 

Cubic Zirconia (CZ) "Wildflower Mix"
2.5mm round, Each package of 20 stones includes: pink, yellow, champagne, white, purple, and orange
 
FCT96s   $6.99 for a mixed package of 20 stones     Quantity in stock: 3 packs 

Quantity:



 

Cubic Zirconia (CZ) 6mm faceted rounds These come in your choice of colors:

Shown at top: Cubic Zirconia pink                6mm round
FCT114s   $1.30 each    Quantity in stock: 3
 
Quantity:


 
       
Second from top: Cubic Zirconia yellow      6mm round
FCT111s   $1.30 each    Quantity in stock: 3
 
Quantity:


 
       
Third from top: Cubic Zirconia champagne 6mm round
FCT112s   $1.30 each    Quantity in stock: 3
 
Quantity:


 
       
Fourth one down: Cubic Zirconia lavender  6mm round
FCT115s   $1.30 each    Quantity in stock: 3
 
Quantity:


 
       
Shown at bottom: Cubic Zirconia purple     6mm round
FCT116s   $1.30 each    Quantity in stock: 1
 
Quantity:


 

 


Cubic Zirconia (CZ) 6mm faceted rounds  Here are more color choices:

Shown at far left: Cubic Zirconia bright orange  6mm round
FCT113s   $1.30 each    Quantity in stock: 1
 
Quantity:


 
       
Shown in center: Cubic Zirconia tourmaline green  6mm round
FCT117s  $1.30 each    Quantity in stock: 2
 
Quantity:


 
       
Shown at right: Cubic Zirconia  black diamond opaque black 6mm round
FCT118s   $1.30 each    
Out of stock, but feel free to order whatever you want as we are backordering these.
 
Quantity:


 

 

 

Synthetic Corundum 6mm faceted rounds These stones have the same chemical composition as rubies and sapphires; but they are manufactured in a lab.

Top: Synthetic Corundum  garnet red   6mm round
FCT122s   $1.40 each    Quantity in stock: 2
 
Quantity:


 
       
Middle: Synthetic Corundum  ruby red   6mm round
FCT123s   $1.85 each  
Out of stock, but feel free to order whatever you want as we are backordering these.
 
 
Quantity:


 
       

Bottom: Synthetic Corundum  alexandrite purple/magenta   6mm round
FCT124s   $1.80 each   
Out of stock, but feel free to order whatever you want as we are backordering these.
 
 
Quantity:


 

 


Lab-created Spinel  Their crystalline structure is identical to natural spinel, but surprisingly, they can mimic the blues of aquamarine, zircon or blue topaz, and blue sapphire.

Shown at far left: Lab-created Spinel          aquamarine (light) blue  6mm round
FCT119s   $1.40 each   
Out of stock, but feel free to order whatever you want as we are backordering these.
 
 
Quantity:


 
       
Center: Lab-created Spinel                                     zircon or topaz (med) blue  6mm round
FCT120s   $1.40 each  
Out of stock, but feel free to order whatever you want as we are backordering these.
 
Quantity:


 
       
Right:  Lab-created Spinel                                  sapphire (dark) blue    6mm round
FCT121s   $1.40 each
  
Out of stock, but feel free to order whatever you want as we are backordering these.
 
Quantity:


 

 

Laboratory-Grown Color Change Sapphire

These were so pretty I couldn't pass them up, even though I only have these three right now. Their color change is more subtle than an Alexandrite but still very lovely: They are bright raspberry pink under incandescent light, purple with pink flashes under halogen, indigo purple-blue in outside shadows, and bright purple in sunlight. They have the same crystalline structure as genuine sapphires.

Laboratory-grown Color Change Sapphire
11 x 9mm oval  only one available

FCT102s    $32.00 Out of stock, but feel free to order whatever you want as we are backordering these.

 

 

 

Laboratory-grown Color Change Sapphire
7mm round
FCT103s   $15.50 each  
Out of stock, but feel free to order whatever you want as we are backordering these.

Quantity:



 

Synthetic Gem Cabochons These transparent dots of color can be cast in place or kiln-fired with PMC. All are 5mm.

Top row: Laboratory-grown Corundum cabochon      garnet red   5mm round
FCT125s   $1.40 each   
Out of stock, but feel free to order whatever you want as we are backordering these.
 
Quantity:


 
       
Second row: Laboratory-grown Corundum cabochon   ruby red   5mm round
FCT126s  $1.40 each    Quantity in stock:
Out of stock, but feel free to order whatever you want as we are backordering these.
 
Quantity:


 
       
Third row: Laboratory-grown Corundum cabochon       pink sapphire pink   5mm round
FCT127s   $1.40 each   
Out of stock, but feel free to order whatever you want as we are backordering these.
 
Quantity:


 
       
Bottom row: Laboratory-grown Corundum cabochon alexandrite purple/magenta   5mm round
FCT128s   $1.40 each   
Out of stock, but feel free to order whatever you want as we are backordering these.
 
Quantity:


 

 

 

Top: Lab-created Spinel Cabochon aquamarine (light) blue                     5mm round
FCT129s   $1.40 each     
Out of stock, but feel free to order whatever you want as we are backordering these.
 

Quantity:


 
       
Middle:  Lab-created Spinel Cabochon zircon or topaz (medium) blue     5mm round
FCT130s   $1.40 each    Quantity in stock: 3
 
 

Quantity:


 
       
Bottom:  Lab-created Spinel Cabochon sapphire (dark) blue                   5mm round
FCT131s   $1.40 each     
Out of stock, but feel free to order whatever you want as we are backordering these.
 
 
Quantity:


 

 

 

Top: Cubic Zirconia Cabochon purple 5mm round
FCT134s   $1.40 each   Quantity in stock: 1
 
 

Quantity:

 
       
Middle: Cubic Zirconia Cabochon yellow 5mm rnd
FCT133s   $1.40 each Quantity in stock: 3
 
 

Quantity:


 
       
 

 

Cubic Zirconia Cabochon clear 5mm round
FCT132s   $1.40 each
Out of stock, but feel free to order whatever you want as we are backordering these.

 

 
Quantity:

 

 


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