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page 145-188 10/12/12 2:05 PM Page 3 sterling silver collection page 146-147 10/12/12 2:07 PM Page 2 A A. 800639 Sterling silver cable chain, 18” $19 B. 844037-P Satin cut-out pendant with high polish edges $79 C. 834008 Satin abstract woven link bracelet, 7" toggle clasp $419 D. 813526 Satin ring with high polish edges Sz 6, 7, 8 $149 B C D sterling silver collection 146 page 146-147 10/12/12 2:07 PM Page 3 A A. 801289 Sterling silver rollo chain, 18" $23 A B. 844006-P Satin drop pendant on shiny bail $99 C. 822713 Satin drop earrings on shiny snap bar hoops $159 D. 822714 Satin drop earrings on shiny loops $179 E. 844013-P Satin drop pendant on shiny bail $109 C E B D contemporary stylish trendsetting 147 page 148-149 10/12/12 2:08 PM Page 2 C A D sterling silver collection B A. 801608 Sterling silver Parasian wheat chain, 18" $59 E B. 844009-P Satin pendant with channel set london blue topaz $179 C. 822770 Satin post earring with channel set london blue topaz $149 D. 813507 Satin finish band with london blue topaz Sz 6, 7, 8 $199 E. 822708 Satin and high polish pear shape post earrings $259 148 page 148-149 10/12/12 2:08 PM Page 3 A A C A. 801289 Sterling silver rollo chain, 18" $23 B. 844001-P Satin and high polish pear shape drop pendant $179 C. 813504 Domed satin band with london blue topaz Sz 6, 7, 8 $259 D. 844010-P Domed circle pendant with london blue topaz $249 E. 822718 Domed circle satin earrings with london blue topaz $229 B D E 149 page 150-151 10/12/12 2:09 PM Page 2 A E B A. 834001 Open circle design bangle with amethyst $459 B. 801289 Sterling silver rollo chain, 18" $23 C. 844030 Rectangular circle design amethyst pendant $149 D. 813519 Wide circle design amethyst band Sz 6, 7, 8 $179 E. 822753 Amethyst and moonstone post earrings $589 F. 834009 Amethyst and moonstone hinged bangle $649 C F D sterling silver collection 150 page 150-151 10/12/12 2:10 PM Page 3 E C A A. 801608 Sterling silver parisian wheat chain, 18" $59 B. 844048 Round cabochon moonstone and amethyst pendant $479 C. 813545 Round cabochon moonstone and amethyst ring Sz 6, 7, 8 $179 F D. 834006 High polish swirl cuff with moonstone and amethyst $659 B E. 800379 Sterling silver box chain, 18" $19 F. 844000-P High polish open oval design circle pendant $129 G. 822769 High polish open oval design dangle earrings $119 G D 151 page 152-153 10/12/12 2:10 PM Page 2 A AA F G A. 801289 Sterling silver rollo chain, 18" $23 B. 844045 Oval faceted amethyst pendant $549 B C. 822747 Oval faceted amethyst french wire earrings $209 D. 813540 Ring with oval faceted amethyst Sz 6, 7, 8 $359 E. 844027 London blue topaz briolette pendant $499 F. 822752 London blue topaz round post earrings $189 E G. 844038 Faceted london blue topaz pendant $199 H. 813527 High polish london blue topaz ring Sz 6, 7, 8 $159 C sterling silver collection D H 152 page 152-153 10/12/12 2:11 PM Page 3 A A A. 800639 Sterling silver cable chain, 18" $19 B. 844002 High polish circle pendant with london blue topaz $99 C. 822711 High polish circle post earrings with london blue topaz $139 D. 813520 Ring with emerald cut swiss blue topaz Sz 6, 7, 8 $299 E. 844062 Square amethyst pendant $149 F. 822773 Square amethyst post earrings $149 G. 813500 High polish square amethyst ring Sz 6, 7, 8 $199 E F C B D G 153 page 154-155 10/12/12 3:05 PM Page 2 A A C E A. 800859 Sterling silver wheat chain, 18" $79 B. 844054 Rope design pink amethyst, green amethyst pendant* $169 C. 813552 Rope design pink amethyst, green amethyst ring Sz 6, 7, 8 $209 D. 822766 Rope design pink amethyst, green amethyst dangle post earrings $229 E. 844044 Faceted pink quartz pendant $339 F. 822755 Faceted round pink quartz wire earrings $349 G. 813532 Round faceted pink quartz ring Sz 6, 7, 8 $329 F B D G 154 page 154-155 10/12/12 3:05 PM Page 3 A A C D E A. 801289 Sterling silver rollo chain, 18" $23 B. 844035 Polished puff heart pendant with amethyst $239 C. 813558 Cushion cut pink quartz ring Sz 6, 7, 8 $189 D. 822745 Cushion cut pink quartz post earrings $159 E. 844029 Cushion cut pink quartz pendant with rope design $149 F. 822779 Small hoop earrings with bezel set amethyst $119 G. 822778 Medium hoop earrings with bezel set amethyst $169 H. 822748 Large hoop earrings with bezel set amethyst $179 B G F H 155 page 156-157 10/12/12 2:13 PM Page 2 A C F B A. 800379 Sterling silver box chain, 18" $19 B. 844055 Faceted cabochon pendant $79 C. 822740 Faceted cabochon onyx wire earrings $89 D. 813541 Faceted cabochon onyx ring Sz 6, 7, 8 $109 E. 833204 High polish bamboo design bangle $219 F. 822734 High polish half-hoop bamboo earrings $149 G. 813565 High polish bamboo ring Sz 6, 7, 8 $119 E G D 156 page 156-157 10/12/12 3:06 PM Page 3 A E D B sterling silver collection F C A. 801289 Sterling silver rollo chain, 18" $23 B. 844060 Shiny triple circle pendant $179 C. 822771 Shiny triple circle post earrings $279 D. 833200 Shiny circle bracelet, toggle clasp 73/4" $399 E. 813529 Cabochon onyx circle ring Sz 6, 7, 8 $99 F. 844040 Faceted black onyx cross pendant $99 157 page 158-159 10/12/12 2:15 PM Page 2 A A A. 801289 Sterling silver rollo chain, 18" $23 B. 844008 Satin swirl design pendant $129 C. 813509 Satin swirl ring with high polish shank $109 D. 822720 Satin swirl post earrings $99 E. 844036 Satin finish heart pendant $189 B D E C 158 page 158-159 10/12/12 2:15 PM Page 3 C D A A. 822716 Satin huggy style hoop earrings $99 B. 822727 Silver V hoop earrings with secure latch $149 C. 822730 Satin post earrings with marquise london blue topaz $259 D. 801608 Sterling silver parisian wheat chain, 18" $59 E. 844012 Satin pendant with marquise london blue topaz $229 F. 813508 Satin ring with marquise london blue topaz Sz 6, 7, 8 $199 E B F 159 page 160-161 10/12/12 2:17 PM Page 2 B E A sterling silver collection C F A. 834002 Chalcedony and moonstone hinged bangle $499 B. 801289 Sterling silver rollo chain, 18" $23 C. 844021 Chalcedony and moonstone pendant $299 D. 813510 Chalcedony and moonstone ring Sz 6, 7, 8 $249 E. 822777 High polish small marquise shape hoop earrings $109 F. 822776 High polish medium marquise shape hoop earrings $139 G. 822729 High polish large marquise shape hoop earrings $159 G D 160 page 160-161 10/12/12 2:17 PM Page 3 A. 822707 Oval link rope design post earrings $179 B. 833205 Oval link with rope design polished bracelet, 71/2" $499 C 822742 Chalcedony french hook earrings $229 D. 800379 Sterling silver box chain, 18" $19 E. 844032 Chalcedony oval pendant $139 F. 813522 Oval chalcedony high polish ring Sz 6, 7, 8 $159 D C A E B F 161 page 162-163 10/12/12 2:18 PM Page 2 A A E A. 800859 Sterling silver rope chain, 18" $79 B B. 844063 Swirled satin finish heart pendant $129 C. 813563 Oval garnet high polish swirl ring Sz 6, 7, 8 $429 D. 834013 Oval garnet high polish swirl hinged bangle $759 E. 822737 High polish faceted hook earrings $159 F. 844026 High polish rope border faceted pendant $149 G. 813513 High polish split shank rope ring Sz 6, 7, 8 $149 F C G D 162 page 162-163 10/12/12 2:19 PM Page 3 B A C A. 822750 Oval garnet french wire earrings $199 B. 801289 Sterling silver rollo chain, 18” $23 C. 844024 Oval faceted garnet slide $449 D. 813518 Wide polished ring with bezel set garnet Sz 6, 7, 8 $179 F E 822751 Oval garnet post earrings $109 sterling silver collection D E 163 page 164-165 10/12/12 2:20 PM Page 2 A A B E C F D A. 801289 Sterling silver rollo chain, 18" $23 B. 844056 Fleur de lis oval black onyx pendant $199 C. 813553 Fleur de lis oval black onyx ring Sz 6, 7, 8 $199 G D. 822764 Fleur de lis oval black onyx earrings $179 E. 813554 Cushion cut black onyx hammered ring Sz 6, 7, 8 $169 F. 844052 Cushion cut black onyx hammered pendant $169 G. 822765 Cushion cut black french wire earrings $139 164 page 164-165 10/12/12 2:21 PM Page 3 sterling silver collection D C E A. 813543 Domed oval satin finish black onyx ring Sz 6, 7, 8 $269 B. 813564 Concave satin finish black onyx ring Sz 6, 7, 8 $259 C. 813539 Faceted cushion cut black onyx ring Sz 6, 7, 8 $89 D. 800859 Sterling silver wheat chain, 18" $79 E.
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  • Estimating Weights of Mounted Colored Gemstones

    Estimating Weights of Mounted Colored Gemstones

    NOTE S AND NE W TECHNIQUES ESTI MATING WEIGHTS OF MOUNTED COL ORED GEMS TONES By Charles I. Carmona Updated formulas are presented for estimating the weights of mounted col - ored gemstones. These formulas are derived from measurements and weights of thousands of German-cut calibrated amethysts and citrines, rep - resenting most commercially available shapes and sizes. As with the formu - las taught by GIA, the dimensions of a stone are multiplied by its specific gravity and by a “shape factor” that is determined by the stone’s face-up outline. This article also illustrates how the shape factor changes over a con - tinuum of common face-up outlines. As in previous formulas, a separate weight correction factor is applied to stones that show proportion variations in profile view. Estimating weights of mounted gemstones has gemstone weights, or negotiating the sale or pawn become a common routine for many of today’s jew - of jewelry. elry tradespeople. Weight estimation is necessary Over the past two decades, estate jewelry has when the stone cannot be removed from its mount - become increasingly important in the market (fig - ing, either because the client will not allow it or ure 1). No longer is all second-hand jewelry simply because the piece might be damaged. This is typi - melted down and the stones recut for remounting. cally the case with estate jewelry (i.e., jewelry that In fact, more jewelers are entering this market, at has been previously owned). Estimating weight both wholesale and retail levels, as witnessed by might be done when performing an appraisal, calcu - regular estate jewelry sections in the trade pres s lating an offer to purchase jewelry with unknown (see, e.g., Jewelers’ Circular-Keystone and Professional Jeweler ), the growth of estate jewelry sections at trade shows (such as the Las Vegas JCK Show), and the prevalence of this jewelry in on-line bul - letin boards (e.g., http:// www.diamonds.net , ABOUT THE AUTHOR http://www.poly gon.net) and Web sites (e.g.