GEM STONES.NEWNHAM RE.1970; EARTH MINER. SCI., U.S.A.; 1970(10), VOL. 40, NUM. 0001, P. 1 A 5Miscellaneous

COLLECTING IN CZECHOSLOVAKIABANCROFT P.1973; LAPIDARY J.; U.S.A. ; 1973, VOL. 27, NUM. 0001, P. 84 A 96Serial Issue

GEMSTONE.SWITZER G.1973; IN: EARTH RESOUR.; WASHINGTON, D.C. U.S. INF. AGENCY,1973, P. 233 A 245Book

LA MICROSCOPIA CON LUZ POLARIZADA Y SUS APLICACIONES EN GEMOLOGIA. = LA MICROSCOPIE EN LUMIERE POLARISEE ET SES APPLICATIONS A LA GEMMOLOGIEBOSCH FIGUEROA JM; MONES ROBERDEAU L.1972; GEMOLOGIA; ESP; 1972, VOL. 4, NUM. 0015-0016, P. 5 A 25Serial Issue

THE MINERAL MUSEUM.BANCROFT P.1972; LAPIDARY J.; USA; 1972, VOL. 26, NUM. 0004, P. 594 A 613Miscellaneous

KEY FOR IDENTIFICATION OF COMMON CUT AND UNCUT GEMSTONES.1971; AUSTRAL. GEMMOLOGIST; AUS; 1971, VOL. 11, NUM. 0003, P. 6 A 7Miscellaneous

INCLUSIONS SOLIDES DES GEMMES.SCHUBNEL HJ.1970; BULL. ASS. FR. GEMMOL.; FRA; 1970, NUM. 0023Miscellaneous

EPIDOTE FOR LAPIDARIES.COOKE C.1970; LAPIDARY J.; USA; 1970(1), VOL. 23, NUM. 0010, P. 1370 A 1379Miscellaneous

CONTRIBUTION A L'ETUDE DES INCLUSIONS SOLIDES DES GEMMES.GIRAUD R; PICOT P; SCHUBNEL HJ et al.1969; BULL. ASS. FR. GEMMOL.; FRA; 1969(3), NUM. 0018, P. 12 A 13Miscellaneous

COMMON GEMS OF SAN DIEGO COUNTY, CALIFORNIA.JOHNSON PW.1969; J. GEMMOL.; GBR; 1969(7), VOL. 11, NUM. 0007, P. 274 A 296Miscellaneous

AUSTRALIA AND GEMMOLOGY : NOMENCLATURE AND TRADING. PART 3.WIRTH AA.1968; AUSTRAL. GEMMOLOGIST; AUS; 1968(5), VOL. 10, NUM. 0002, P. 21 A 23Miscellaneous

AZURITE AND MALACHITE.CHIDLEY CM.1968; AUSTRAL. LAPIDARY MAG.; AUS; 1968(7), VOL. 4, NUM. 0012, P. 29 A 32Miscellaneous

DIE EDELSTEINE DER INSEL CEYLON (LES PIERRES PRECIEUSES DE CEYLAN).GUEBELIN E.1968; IMPRIMERIE.CORBAZ.S.A.MONTREUX.; 1968, P. 1 A 152Miscellaneous

SUR UN GISEMENT DE PIERRES PRECIEUSES DECOUVERT DANS UN DOMAINE DE LA COMMUNE DE BOMMES (GIRONDE).BRIEUSSEL.1928; BULL. SOC. SCI. ARTS. BELLES LETTRES DU TARN; FRA; 1928, NUM. 0027-0028, P. 181 A 183Miscellaneous

LES PIERRES D'AUVERGNE.DEMARTY J.1898; REVUE D'AUVERGNE; FRA; 1898, NUM. 0001-0004, P. 247 A 302Miscellaneous

DURCHSICHTIGER SAPHIRBLAUER SODALITH AUS SU-AFRIKA (1811 V. THOMSON BENANNT). = SODALITE BLEU-SAPHIR TRANSPARENTE DU SUD-OUEST AFRICAINBANK H.1974; Z. DTSCH. GEMNOL. GESELLSCH.; DEU; 1974, VOL. 23, NUM. 0004, P. 279 A 280Serial Issue

VALUATION PRINCIPLES AS APPLIED TO COLOURED GEMSTONESTOMBS GA.1972; AUSTRAL. GEMMOLOGIST; AUSTRAL. ; 1972, VOL. 11, NUM. 0006, P. 9 A 14Serial Issue

IN SEARCH OF BRITISH AND IRISH GEMSTONES.FIRSOFF VA.1972; LAPIDARY J.; USA; 1972, VOL. 25, NUM. 0010Miscellaneous

CLASSIFICATION SYSTEMATIQUE DES MINERAUX ET DE LEURS VARIETES LE PLUS SOUVENT EMPLOYES COMME GEMMES.SCHUBNEL HJ.1971; BULL. ASS. FR. GEMMOL.; FRA; 1971, NUM. 0028, P. 7 A 10Miscellaneous

LES GISEMENTS BRESILIENS DE TOURMALINE.CASSEDANNE J.1971; BULL. ASS. FR. GEMMOL.; FRA; 1971(3), NUM. 0026, P. 7 A 10Miscellaneous

DEVELOPMENTS AND HIGHLIGHTS AT GIA'S LAB IN LOS ANGELES.LIDDICOAT RT JR.1971; GEMS AND GEMOL; USA; 1971, VOL. 13, NUM. 0011, P. 354 A 362Miscellaneous

PIEDRAS SINTETICAS MODERNAS-II.1970; GEMOLOGIA; ESP; 1970, VOL. 2, NUM. 0006, P. 9 A 31Miscellaneous

FEATHERS, FLAKES, AND FANS -PART 3.ZEITNER JC.1970; LAPIDARY J.; USA; 1970(4), VOL. 24, NUM. 0001, P. 4 A 16Miscellaneous

GEMS, THEIR SOURCES, DESCRIPTIONS AND IDENTIFICATION. (2ND EDITION).WEBSTER R.1970; BUTSURI-TANKO; JPN; 1970, P. 1 A 836Miscellaneous

LES PIERRES PRECIEUSES.SCHUBNEL HJ.1968; QUE.SAIS.JE-PRESSE.UNIV-FRANCE.; 1968, NUM. 0592, P. 1 A 128Miscellaneous