Custom Gemstone Faceting
and Lapidary Service



Customer Testimonials...


"Received your gem. It is beautiful!!!! Your photo was beautiful but the real thing is 10 times more beautiful than the photo."
May 2016, HR


"Oh, wow! It's beautiful! I'm astounded. And happy! Thanks again, Jerry! You are an artist."
Mar. 2016, JW


"Your work is such an enhancement to the stones I sent to have you re-cut. They are beautiful!"
May 2016, AG


"I just received the stones. They are so beautiful and I love them! Thanks again so much for your wonderful work!!"
May 2016, YK


"They look fantastic! Can’t thank you enough. They are perfect."
June 2015, JP


"Thank you for the top notch job you have done… because of you and I there is now something beautiful in the world that had been hidden."
May 2015, RH


"It’s an absolute beauty, way better than the pics!!! Bravissimo."
Jan 2015, AJ


"The stone looks fabulous, what a beautiful improvement."
June 2015, TG


"I just received the stone and it is truly amazing... It's exactly what we were hoping for."
Dec. 2014, DM


"Just got the Spinels. They really are fabulous. Very well done."
June 2014, RG



Gemart Services
Custom Faceted Gemstones & Lapidary Service

Below are examples of Jerry's cutting. Any that are not marked "Sold" are available.
Also see our Stones for Sale.





Moissanite
A new gem cutting experience has been added to the Gemart brand. It is a bit surprising that by now the name isn’t widely known. It has characteristics that surpass diamond. The dispersion and refractive index are greater than diamond and the hardness surpasses sapphire and is second only to diamond.

Moissanite crystals were discovered in a meteorite from Arizona’s Meteor Crater by a French scientist and the man-made replica is named after him. The original very fine crystals have never been found naturally occurring in the earth. They needed conditions found only in this meteor’s fiery origins and travels through space (or in a modern laboratory). Chemically it is the abrasive known as silicon carbide. I was asked to recut several modern faceted gems to resemble Old European style and these three are the result. These have some color, but I believe most Moissanite is sold colorless and is an excellent diamond simulant.

I am unable to buy rough, but recutting is now a reality with the tools and techniques that I have available.
Ametrine / 32.62 ct / 23 x 17 mm oval
A large very showey and unique mix of amethyst and citrine from the world famous Bolivian mines. The pattern is called "Super Nova" by Long and Steele. It has 87 facets and has spectacular flashes in direct light.
An unheated, untreated Sapphire from the Missouri River gravels near Helena, Montana. The “Asscher” design is Jerry’s version adapted for Sapphires. The raw crystal rough was purchased by a client and sent to us for cutting. It is 8.5mm square and weighs 4.44ct. and has exceptional clarity and blue color, teal in some lighting..
Here is another unheated, untreated Montana Sapphire cut by Jerry from customer provided rough. The clarity and performance are quite exceptional. The pattern, enhanced by Jerry, is called “Hexbar Oval”. The stone weighs 4.57ct. and is 10 x 8.7mm.
Rare sapphire — This unusual color sapphire is from Montana, USA....the Eldorado Bar Mine outside of Helena. It is natural and unheated and not enhanced by man in any way. It is 9.25mm square and weighs 4.61ct which is well above the typical Montana sapphire size. Its color shifts from green in daylight to more of a blue tone in indoor light. The cut is called "Fuego Verde" (Green Fire) and was designed by an emerald miner/cutter named Gustavo Castleblanco of Colombia. Jeremy cut it in October, 2010 for Blaze Wharton, the owner of the Eldorado Bar Mine. The stone is for sale. If interested, please contact Blaze. His web address is www.blazengems.com . His email is Blazebwci@Aim.com.
This exceptionally large stone was cut by us in Sept., 2009 for the owner of the El Dorado Bar Mine in Helena, Blaze Wharton. He found the 22ct. rough stone this last August and was the largest he has found in 7 years of mining. The stone has a few small black speck inclusions and a little bit of silk, nevertheless it is a beautiful, amazing, natural, unheated American gem. We are honored to be involved with a gem of such rarity and value.

To accommodate the shape of the rough Jeremy modified a design by Gustavo Castleblanco called “Fuego Verde”. Gustavo is an emerald miner and cutter from Columbia.
Here is a photo of an 18 mm 17.21 ct root beer citrine....perhaps close to "Rio Grande" color. Material is Russian lab grown quartz and is cut in Jerry's KIEV TRIANGLE pattern which has 139 facets. Pattern is available for the asking for RI=1.54 or RI=1.60 and above. Let us know.
17.12ct Ametrine measuring 18 x 13.5 mm. The cut is patterned after one designed by Wilf Ross for the 2001 Australian Faceter's Guild annual competion called "Cut Corner Rectangle". Because I had material available I increased the length to width ratio to 1.33 to 1 instead of 1.25 to 1, and slightly altered the crown step facets.

The design has a pretty typical "emerald cut" crown, however the pavilion is vastly different from an emerald cut. The pavilion has a "brilliant" array of facets rather than typical step cuts of the emerald cut design resulting in much more scattering of color and light.

Ametrine is a naturally occuring mix of both amethyst and citrine, and gem grade material comes from only one known source in Bolivia.
Peridot, 4.70 ct, from the San Carlos Apache Reservation near Globe Arizona. The stone is a classic example of the best color peridot from the area and is probably above average in size. The pattern started off as a Barion Cushion designed by Dan Clayton of Seattle, but as I often do, I added a few facets to make it more complicated and, I think, perhaps a little more interesting
A 2.89ct 8.5mm Sunstone from the Dust Devil Mine near Plush, Oregon. We picked up the rough last summer at the mine. It is a very unusual in that it has a predominant green color, but the more typical orange or salmon color is also visible. Bi-colors like this are much more rare and valuable than the salmon color.

The cut is called Hexamon 3 created by Steven De Long and was his entry in a design contest sponsored by the USFG. It was also featured in a Lapidary Journal article.
Exceptional flawless bi-color tourmaline (19.11 ct) along with a 1.34 ct princess type cut from the same crystal. Material is from the world famous 100 year old Himalaya mine in Mesa Grande, CA (San Diego County). I cut these gems for the mine owner, Chris Rose, and then had to buy them from him because they were so beautiful and rare.
Surprisingly bright and beautiful very pale 7.8 mm aqua ( almost goshenite) weighing 2.15 ct. It is picking up different colors from the surroundings. The cut is a slight modification of a design by Jeff Graham with 129 facets called the "TZAR cut" and has a very high crown.
A 19.77 ct 16.5 mm Ametrine in the "Fly Eye" pattern. Robert Strickland developed the pattern in a competion to obtain maximum tiltability , ie. continues to return brilliance even when tipped way over. The angles used in cutting the pavilion are unusual.
This bi-colored topaz is from the Tarryall Mountains of Colorado, near Lake George. I purchased the crystal from a miner who was selling at the Buena Vista Show in August 2005. The crystal yielded this 38 ct beauty measuring 20 x 15 mm. The champage and pale blue colors, for which this area is famous, are more pronounced than the picture suggests.

The pattern is called Formee Cross Rectangle and is by Robert Strickland. It has 75 facets. I hope to locate the miner again this year.
This Ametrine is in the “Etoile” design by Paul Rivard which is a favorite. It produces a pleasing blend of the Amethyst and Citrine colors and is a great optical performer.
Chrysoberyl is a rare gemstone. It is a Beryllium Aluminum Oxide and the third hardest gemstone at 8.5 on the Mohs scale…between Corundum and Topaz. It generally occurs in pale green and golden colors. Optically it is similar to Sapphire with an R.I. of 1.75 vs. 1.76 for Sapphire.

This rich golden gem was cut by Jeremy in his own custom Asscher design for the slightly rectangular dimensions. It was part of the estate lot of material acquired early in 2014 but it was a terribly windowed, native cut, rectangular cushion with a myriad of little rectangle facets and weighed 25 ct. ..hardly worth calling a gem. After losing 40% of it’s weight it is now a worthy gem, well suited for the Asscher look. It is flawless.
Part of the recently acquired estate lot of gems through the passing of an old friend in the gem business, this large golden Citrine Trilliant is well cut to modern standards and would make a fine pendant.
Cut by Jeremy Newman in his unique "Paver Trilliant" design with 139 facets.
If ever there was a special and spectacular gem, this Nigerian Spessartine Garnet is it. It is a true Mandarin/Fanta orange color. It was presented to Jeremy as a native cut "roval" to be recut into a round gem. Recognizing it' great potential Jeremy designed a unique pattern with nine main culet facets for more light splitting reflections compared to the traditional eight main facets. The result is so spectacular he named the cut "The Nines". It has 109 facets and it truly lights up all over. The stone weighs 3.49 ct and is 8.1mm diameter, and because of certain positive events it now resides in Jeremy's inventory.
Morganite is the pink variety of aqua marine, a member of the beryl family. This is a beautiful pink sparkler in a Barion Brilliant rectangle pattern.
Here is another special stone. Sphalerite is relatively soft at only 3.5 in hardness and should not be exposed to everyday wear and tear in a ring.

It has exceptional optical properties. The R.I. approaches diamond while the dispersion of 150 far exceeds diamond at .044. The color is sort of a rootbeer with greenish golden reddish highlights.
Here is an uncommon gem whose beautiful lighter green color forms an excellent setting for the fiery dispersion display of rainbow sparks coming from within. Sphene has an R.I. way above Sapphire at about 2.0. But also it has dispersion greater than diamond. Its’ hardness of 5 to 5.5 (slightly softer than Tanzanite) would dictate use in jewelry not subject to a lot of wear and tear. Jerry entirely recut this stone from a woefully poorly executed native cut pear shape.
Here is a complete recut by Jeremy of one of the native cut stone obtained from the estate collection of an old friend. It's a 65 facet Barion type oval that lights up all over. Hard to describe the shade of pink... maybe a rhubarb pink.
Here is a rare bi-color gem from the world famous Oregon sunstone area in the southern part of the state. This stone shows a core zone of salmon pink with highlights of green/golden flashes on either side. It is cut in a brilliant rectangle design and has 57 facets.
Natural pale blue topaz from Brazil with no enhancements. Cut by Jeremy Newman in the Jeff Graham design called "Noel Oval". It is a very bright and attractive.
Here is a very light pink Topaz from Pakistan cut in Jerry’s Asscher design. It is very lively and showy with lots of scintillation. We bought the rough crystal from a Pakistan dealer in Tuscon 2 years ago and just got around to cutting it. The pink saturation is very pale and seems to shift to a more peach and golden color in different lighting conditions.
This mint or "sea-foam" beauty represents the most sought-after tourmaline green. It is from the Mawi Mine in Laghman, Afghanistan. This stone is a Barion Brilliant Rectangle and it lights up all over. It has a few almost invisible fine inclusions which do not detract.
This is one of the last couple of Afghan mint tourmalines from the Mawi mine that we just finished. The photo doesn't quite pick up as much green as in the actual stone. It is green with bluish overtones. This is Jerry's 64 facet Roundtril design with a trilliant culet which expands to six facets around, then six more, then 12 more to get the round shape. It has been a very nice performer. The stone is eye clean. This material has been difficult to get and has gotten expensive.
Here is a very lively Tourmaline from the famous Stewart Mine in Pala, CA. cut by Jeremy in an "Opposed Bar" design. If one looks very closely some typical small flaws might be visible near one end. They are not all that apparent. This is not unusual for Stewart material.
Here is a golden beauty with lots of sparkle and dazzle of Zircon. The pattern is called Fuego Verde by Gustavo Castelblanco of Colombia, stretched by Jeremy to match the rough.
Another Afghan tourmaline, this one showing the beautiful bi-color formation this versitile gem material can display. The stone is a simple step cut with a high crown stepping over the top to bring out the great color and separation of pink and green. It weighs 5.97 ct and is 10 x 8 mm
Golden Sapphire 7.5 mm 2.18 ct a native cut stone which had a "bellied" pavilion to enhance weight which was recut by Jerry to enhance beauty. It now has 9 main culet facets at the proper angle. Original weight was 2.68 ct.
The Ace of Hearts A valentine novelty cut in garnet. Designed by J. Hammer in Jan. 2007. The pavilion is a standard round brilliant but the crown is modified to reflect a heart shaped table. There are 75 facets not counting the girdle. It is 7 mm diameter and weighs 1.75 ct.
White Sapphire (lab grown) in Jerry's KIEV Triangle. Cut to order for a local jeweler. This one is 13.5 mm and weighs 11.27 cts. There are 139 facets.
This unusual cut is called Needle Brilliant and was designed by JoAnne Sisco and published Nov. 1971 in the Lapidary Journal. It produces a needle-like array of brilliance emanating from the culet. Note the stone also has a apex crown and there are 144 facets. This stone is a 13.3mm, 9.66ct "Platinum" Topaz.

Champagne Topaz in a pattern called "ETOILE" designed by Paul Rivard. Stones cut in this pattern all show excellent optics. This Topaz is 11.5mm across and has 86 facets.
Pale green/teal fine afghan tourmaline. 11.5x9mm 5.75ct in a cut corner rectangle...pattern designed by Wilf Ross. Photo has picked up reflective color of nearby foliage detracting from the real beauty.
Here is a 12.23ct, 15 x 12mm smokey quartz in the Cut Corner Rectangle by Wilf Ross. The raw material was obtained on a recent trip to Australia during a visit to the Billabong sapphire mine. (The quartz actually was from a different location.) A combination of this excellent design along with this particular smokey shows a prism effect with red and green flashes.
Ametrine, 16mm 15.43 ct in the Cascade Triangle pattern. This pattern was developed by Jeremy Newman after his similar design in a square configuration. The brilliant pavillion blends the colors nicely.
This "Silver Topaz" is 13mm and 14.09 ct in the Harlequin Hexagon pattern by Paul Rivard. The crystal rough was obtained from miners at Spitzkuppe Mountain by Douglas Coulter when we visited Namibia with him in October 2007 for a gem and mineral safari.

This 9mm 4.8 ct San Carlos Peridot pattern was developed for a local jeweler using a Princess-type pavillion and crown checkers on a diagonal, rather than parallel to the sides.
This 2.85 ct 9mm square cushion Aquamarine is patterned after the "Fuego Verde" design by Gustavo Castelblanco of Columbia, who developed the pattern for his emerald cutting business. It made a beautiful aqua gem as well. Of special note is the fact that the raw material rough aqua is from the USA. It was mined by Jim Tovey at the Tripp Mine in Alstead, New Hampshire in the summer of 2007.
This is a matched pair of 11 x 9 mm Tourmalines weighing 5.77 and 5.81 ct, cut from the same crystal, found at the dumps of the Himalaya Mine of San Diego County in 2006. The pattern is a modified cut corner rectangle.
This is a 16 mm, 18.65 ct synthetic Rutile in the "Vertical Split Mains" brilliant pattern with 89 facets. The raw material was made close to 60 years ago and was given to me to cut by the family of the gentleman who had the material all these years. Synthetic Rutile in the mid-1950s was a relatively new and not uncommon diamond simulant for obvious reasons.
This 9.82 ct, 13.6 mm Morganite (beryl) is one of a series of about a dozen stones that I cut from a lot of rough obtained in mid-2007. Etoile is the name of this pattern and is a favorite of mine. Paul Rivard is the designer. The cut always "performs" regardless of the material.
This striking Rio Grande colored Citrine is 11.8 ct and 15.5 mm. I designed the pattern based upon a unique and spectacular gem sphene I had seen, refining features which I thought would elevate even quartz to its greatest potential. I think the results speak for themselves. The design was featured in the April 2008 Rock and Gem magazine. I named it "Paver Trilliant" for the interlocking crown facets.
This is a 10 mm Princess cut synthetic white sapphire weighing 8.24 ct. I added several extra facets on the pavilion at the request of the jeweler customer, to give a little extra sparkle.
I named this cut Alternating Logic #2 after bring inspired by a similar pattern designed by Jeff Graham. It has a very simple pavilion but a rather complex crown with a small table resulting in a striking set of reflections in this pale golden colored citrine. The stone weighs 3.86 ct and is 10.5 mm.
Here is a rather spectacular pink tourmaline, probably Nigerian origin. It is a 7.9 ct, ll.5 mm "Barion Bow" containing 97 facets. It was published by John Bailey in 2002. This square cushion design has been a great performer.
The colors of Tanzanite. Jerry was given the opportunity of cutting this suite of various colors of Tanzanite (except the most common blue one). The faceted stones range from .5 to 2 cts each. The 18kt gold African continent was created by the artist Frank Heiser of Riverside, California; and the whole piece is to be featured in Rock and Gem magazine. The unusual tanzanite colors include shades of yellow, green, pink and brown.
This Ametrine was cut for a customer from rough that he supplied. He asked Jerry to cut it in his 139 facet "KIEV Triangle" design. With the trilliant shape the citrine and amethyst zones within the stone blend to yield a pretty amazing, constantly shifting, color display. The gem weighs 40 ct and 24 mm wide.
Here is pretty spectacular blue synthetic spinel. We usually don’t cut or promote man-made stones unless the customer wants one. This was cut to "test" a new custom rectangular cushion shape that Jerry designed for a special sapphire. Spinel and sapphire have similar optical characteristics and so is a good and relatively inexpensive test material. This one is 4.77 ct and 10.7 x 8.0 mm and is for sale at a good price if anyone may be interested in having a unique blue sparkler even though it is man-made material. It could perhaps be called an "Aqua spinel".
This beautiful deep red gem is a true representation of the definition of Rubellite …. Ruby - like . Jeremy recut this one of the last native cuts he obtained from an estate lot in a beautiful Barion oval with 89 facets. Knowing the owner, it is likely it originated in Brazil more than 20 years ago. With magnification a few internals may be detected but there is negligible impact on performance.



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