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Direct Links to 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

Opals, Boulder
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

Understand mm sizes:

Quick guide:

 1" = 25mm

1/2"=13mm

1/4"=6.5mm

Change can help:

1 quarter= 24.2 mm

1 dime= 18mm

Both coins: 42mm

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.

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.

NEW: Melee Diamond .03ct (VVS)
Average diam: 2.0 mm, color E
FCT03-VVS   $42.00   15 currently available  (Save 10% when you purchase four or more at a time--Quantity price of $37.50 each)

Quantity:


 

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  
Sorry, Sold Out for now.



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    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    
1 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  
2 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    
1 available

Quantity:





Peridot
 
4 mm trillion  Cut, color, and clarity are all VG+
FCT12   $4.00 each    12 available

Quantity:





Peridot

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

Quantity:


 


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
25 x 20.5mm, 11mm thick
FCT138    $68.00  
Sorry, Sold!


 

 

 

 

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



 

 


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: 85
 
Quantity:


 
       
Shown at right: CZ 5mm round
FCT99s   $0.60 each    Quantity in stock: 32
 
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: 29 
Sorry, Sold Out for now.

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: 14
 
Quantity:


 
       
Second from top: Cubic Zirconia yellow      6mm round
FCT111s   $1.30 each   
Quantity in stock: 20
 
Quantity:


 
       
Third from top: Cubic Zirconia champagne 6mm round
FCT112s   $1.30 each   
Quantity in stock: 11
 
Quantity:


 
       
Fourth one down: Cubic Zirconia lavender  6mm round
FCT115s   $1.30 each   
Quantity in stock: 16
 
Quantity:


 
       
Shown at bottom: Cubic Zirconia purple     6mm round
FCT116s   $1.30 each   
Quantity in stock: 16
 
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: 25
 
Quantity:


 
       
Shown in center: Cubic Zirconia tourmaline green  6mm round
FCT117s  $1.30 each    
Quantity in stock: 23
 
Quantity:


 
       
Shown at right: Cubic Zirconia  black diamond opaque black 6mm round
FCT118s   $1.30 each    
Quantity in stock: 1
 
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   $1.65 each   
Quantity in stock: 13
 
Quantity:


 
       
Bottom: Synthetic Corundum  ruby red   6mm round
FCT123s   $1.65 each  
Quantity in stock: 9
 
 
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   $1.75 each   
Quantity in stock: 13
 
Quantity:


 
       
Center: Lab-created Spinel                                     zircon or topaz (med) blue  6mm round
FCT120s   $1.75 each  
Quantity in stock: 11
 
Quantity:


 
       
Right:  Lab-created Spinel                                  sapphire (dark) blue    6mm round
FCT121s   $1.75 each
  
                OUT OF STOCK
 
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 

FCT102s    $32.00   Sorry, Sold!

 

 

 

Laboratory-grown Color Change Sapphire
7mm round
FCT103s   $15.50 each  
Sorry, Sold Out for now.

Quantity:



 

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

Lab-grown Corundums These have the same crystalline structure as real rubies and sapphires; they're just man-made.

Top row: Laboratory-grown Corundum cabochon      garnet red   5mm round
FCT125s   $2.10 each   
Quantity in stock: 12
 
Quantity:


 
       
Second row: Laboratory-grown Corundum cabochon   ruby red   5mm round
FCT126s  $2.10 each   
Quantity in stock: 14
 
Quantity:


 
       
Third row: Laboratory-grown Corundum cabochon       pink sapphire pink   5mm round
FCT127s   $2.10 each   
Discontinued, sorry!
 
Quantity:


 

 

 

       

New! Lab-grown Corundums Now Available in Larger 6mm Cabochons (same colors as above photo)

Laboratory-grown Corundum cabochon      garnet red  
6mm round
FCT142s   $2.70 each   
Quantity in stock: 8
 
Quantity:


 
 
       
Laboratory-grown Corundum cabochon   ruby red  
6mm round
FCT143s  $2.70 each   
Quantity in stock: 8
 
Quantity:


 
 
       
Laboratory-grown Corundum cabochon       pink sapphire pink  
6mm round


FCT144s   $2.70 each   
Sorry, Sold Out!

 
 
 

 

Lab-created Spinels Apparently, spinels can be made in shades of blue to mimic aquamarines, zircons or topaz, and blue sapphires.

Top: Lab-created Spinel Cabochon aquamarine (light) blue                     5mm round
FCT129s   $2.20 each     
Quantity in stock: 10
 

Quantity:


 
       
Middle:  Lab-created Spinel Cabochon zircon or topaz (medium) blue     5mm round
FCT130s   $2.20 each   
Quantity in stock: 4
 
 

Quantity:


 
       
Bottom:  Lab-created Spinel Cabochon sapphire (dark) blue                   5mm round
FCT131s   $2.20 each     
Quantity in stock: 4
 
 
Quantity:


 

New! Lab-created Spinels Now Available in Larger 6mm Cabochons (same colors as above photo)

Lab-created Spinel Cabochon aquamarine (light) blue 
6mm round
FCT146s   $2.80 each     
Quantity in stock: 7
 
Quantity:


 
 
       
Lab-created Spinel Cabochon zircon or topaz (medium) blue 
6mm round
FCT147s   $2.80 each   
Quantity in stock: 8
 
 
Quantity:


 
 
       
Lab-created Spinel Cabochon sapphire (dark) blue   
6mm round
FCT148s   $2.80 each   
Quantity in stock: 7
 
Quantity:


 
 

 

CZ Cabochons come in a variety of colors

Top: Cubic Zirconia Cabochon purple 5mm round
FCT134s   $1.40 each  
Quantity in stock: 26
 
 

Quantity:

 
       
Middle: Cubic Zirconia Cabochon yellow 5mm rnd
FCT133s   $1.40 each
  Quantity in stock: 13
 
 

Quantity:


 
       
 

 

Cubic Zirconia Cabochon clear 5mm round
FCT132s   $1.40 each
  Quantity in stock: 0

Currently on backorder.

 
Quantity:

 

New! CZ Cabochons Now Available in Larger 6mm size (same three colors as above photo)

Cubic Zirconia Cabochon purple 6mm round
FCT151s   $1.85 each  
Quantity in stock: 10
 
Quantity:


 

 
       
Cubic Zirconia Cabochon yellow 6mm rnd
FCT150s   $1.85 each
  Quantity in stock: 6
 
Quantity:


 

 
       
Cubic Zirconia Cabochon clear 6mm round
FCT149s  
 SOLD OUT FOR NOW
 
Quantity:


 

 

 

 

 

 


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