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contentType

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gemstonesSpecies

Amber (3)Andradite (1)Benitoite (1)Beryl (8)Chrysoberyl (2)Chrysocolla (1)Coral (1)Cordierite (1)Corundum (16)Diamond (33)Dravite (1)Fluorite (1)Hematite (1)Jadeite (7)Labradorite (3)Lazurite (1)Opal (2)Pearl (14)Peridot (1)Phenakite (1)Pyrope (1)Quartz (11)Spinel (4)Spodumene (3)Topaz (1)Tourmaline (1)Zircon (1)Zoisite (2)

gemstonesFilters

Alexandrite (3)Amber (6)Amethyst (15)Ametrine (1)Aquamarine (5)Citrine (2)Diamond (121)Diamond Fancy Color (15)Emerald (25)Garnet (8)Iolite (1)Jade (6)Kunzite (4)Lapis Lazuli (1)Morganite (2)Opal (12)Pearl (17)Peridot (4)Rose Quartz (1)Ruby (39)Sapphire (49)Spinel (15)Sunstone (4)Tanzanite (4)Topaz (9)Tourmaline (10)Turquoise (1)Zircon (3)

articleCategory

Abstract (5)Alumni Association (8)Alumni Spotlight (22)Analysis (1)Bibliography (1)Book Review (14)Chart (1)Diamonds From The Deep (1)Editorial (1)Feature (130)Field Report (28)Gem News International (22)Gems Gemology (11)Industry Analysis (30)Lab Notes (28)Micro World (2)Notes Techniques (5)Overview (5)Peer Reviewed (1)Profile (2)Research News (46)Reviews (5)The Story Behind The Story (4)

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articlePrimarySubject

Announcements (55)Chemical Composition (5)Clarity (2)Color (6)Cut (3)Design (9)Education (10)Enhancement (2)Fashion (1)Formation (1)Gemology (29)Geology (3)Grading (5)History (27)Identification (6)In Memoriam (1)Inclusions (5)Instrumentation (1)Jewelry (5)Localities (25)Manufacturing (1)Material Properties (1)Mineralogy (3)Mining (10)Ongoing Research (1)Optical Effects (1)Optical Properties (2)Other Research Publications (2)Recent Findings (1)Research (2)Synthetics (31)Techniques (1)Technology (3)Trade (24)Treatment Process (2)

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coverageCity

Carlsbad (2)Gaborone (1)Jaipur (2)

secondarySubject

Assembled Stone (3)Carat Weight (12)Care (4)Chemical Composition (20)Clarity (20)Color (42)Crystal Structure (12)Cut (15)Design (43)Education (47)Enhancement (7)Faceting (13)Fashion (23)Folklore (9)Formation (20)Gemology (84)Geology (38)Grading (13)History (75)Identification (33)Imitations (6)Inclusions (21)Instrumentation (12)Jewelry (67)Localities (90)Manufacturing (30)Material Properties (15)Metals (13)Mineralogy (8)Mining (79)Ongoing Research (50)Optical Effects (9)Optical Properties (13)Organics (17)Other Research Publications (1)Physical Properties (27)Precious Metals (7)Pricing (11)Quality Factors (27)Recent Findings (10)Research (1)Simulants (2)Synthesis Process (14)Synthetics (19)Techniques (22)Technology (16)Tools (6)Trade (62)Travel (25)Treatment Process (23)

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About GIA (5)Abstract (6)Advice (5)Alumni Association (30)Alumni Spotlight (14)Analysis (40)Bibliography (25)Biography (5)Book Review (15)Chart (1)Cover Story (1)Diamonds From The Deep (1)Editorial (21)Education Quarterly Article (1)Exhibit Current (7)Exhibit Past (1)Exhibit Upcoming (1)Feature (53)Field Report (10)Gem Facts (57)Gem News International (22)Gems Gemology (45)Industry Analysis (34)Lab Notes (35)Microworld (2)Museum Collection (5)News (30)Notes Techniques (4)Overview (14)Peer Reviewed (61)Profile (1)Research Field Gemology (14)Research G G (2)Research News (291)Research Publications (11)Research Scientific Equipment Techniques (4)Spotlight (3)The Story Behind The Story (1)Update (1)

tertiarySubject

Carat Weight (1)Care (3)Chemical Composition (2)Color (4)Crystal Structure (6)Cut (3)Design (5)Education (3)Enhancement (3)Faceting (5)Fashion (3)Folklore (2)Formation (4)Gemology (32)Geology (3)History (10)Identification (9)Imitations (1)Inclusions (3)Instrumentation (2)Jewelry (8)Localities (9)Manufacturing (11)Material Properties (2)Metals (3)Mining (12)Optical Effects (3)Optical Properties (2)Other Research Publications (1)Physical Properties (7)Precious Metals (5)Pricing (4)Quality Factors (20)Simulants (2)Synthesis Process (4)Synthetics (8)Techniques (5)Technology (9)Tools (5)Trade (16)Travel (4)Treatment Process (5)

gemstonesGroup

Apatite (1)Feldspar (7)Garnet (16)Jade (13)Olivine (2)Tourmaline (17)

gemstonesVariety

Agalmatolite (1)Agate (3)Alexandrite (5)Amethyst (10)Ametrine (2)Ammolite (1)Aquamarine (3)Aventurine (1)Bloodstone (1)Carnelian (3)Chalcedony (8)Chrome Diopside (1)Chrysoprase (1)Citrine (8)Demantoid (3)Emerald (14)Fire Agate (4)Heliodor (3)Hessonite (3)Hiddenite (1)Indicolite (2)Jasper (4)Kunzite (5)Lapis Lazuli (7)Marble (1)Maw Sit Sit (1)Moonstone (5)Morganite (1)Nephrite (3)Onyx (3)Padparadscha (3)Peridot (6)Rock Crystal (2)Rose Quartz (3)Ruby (27)Sapphire (30)Smoky Quartz (3)Sunstone (4)Tanzanite (7)Tsavorite (2)

gemstonesQualifier

American (5)Ametrine (4)Cat S Eye (3)Chrome (1)Color Change (5)Crystal (2)Fancy (3)Fire (1)Golden (1)Larimar (2)Matrix (1)Opalized (1)Parti Colored (2)Rose (1)Rutilated (3)Watermelon (1)

gemstoneElement

Aluminum (2)Beryllium (2)Boron (1)Calcium (1)Carbon (4)Chromium (6)Cobalt (1)Copper (4)Gold (9)Iron (2)Manganese (4)Oxygen (3)Platinum (3)Silicon (3)Titanium (2)Vanadium (2)

gemstoneTreatment

Coating (2)Diffusion (2)Dyeing And Staining (1)Foil Backing (1)Fracture Filling (2)Heating (11)Irradiation (6)Oiling (1)Waxing (1)

gemstoneOpticalProperties

Absorption Spectrum (2)Adamantine (1)Asterism (2)Aventurescence (1)Brilliance (4)Chatoyancy (4)Color Change (15)Dichroic (1)Diffraction (1)Dispersion (1)Doubly Refractive (4)Fire Dispersion (4)Fluorescence (1)Iridescence (2)Labradorescence (1)Luster (1)Metallic (1)Multicolored (1)Opaque (1)Particolored (3)Phenomenal (4)Play Of Color (3)Pleochroic (7)Refractive Index (4)Scintillation (4)Translucent (1)Transparent (7)Vitreous (4)

gemstoneStructure

Amorphous (1)Cleavage (4)Crystal Habit (1)Crystal Structure (8)Crystalline (2)Durability (2)Fracture (1)Hardness (5)Inclusion (5)Specific Gravity (3)Three Phase Inclusion (3)Toughness (2)

gemstoneCrystalGroup

Cubic (5)Hexagonal (5)Monoclinic (3)Orthorhombic (6)Tetragonal (1)Trigonal (2)

gemstoneColor

Black (13)Blue (40)Brown (12)Colorless (25)Gray (14)Green (37)Multicolored (12)Orange (20)Pink (24)Purple (23)Red (29)White (7)Yellow (19)

gemstoneFacet

Bezel (1)Crown (3)Culet (2)Finish (3)Girdle (3)Girdle Diameter (1)Lower Girdle (1)Make (2)Pavilion (4)Pavilion Mains (2)Polish (3)Proportions (5)Star (1)Symmetry (2)Table (4)Total Depth (2)

gemstoneFormation

Alluvial (5)Geode (1)Hydrothermal (1)Igneous (2)Inorganic (2)Metamorphic (3)Organic (2)Pegmatite (5)Placer (1)Primary Deposit (2)Rock (1)Rough (15)Secondary Deposit (2)Sedimentary (1)Surface Weathering (1)

gemstoneCut

Baguette (1)Bead (4)Brillant (13)Briolette (2)Buff Top (1)Cabochon (12)Cameo (1)Carving (5)Cushion (3)Cushion Cut (1)Cut Corner (2)Emerald (3)Faceted (6)Mixed (3)Modified (1)Octagon (2)Old European (1)Old Mine (1)Rough (1)Sphere (2)Step (3)Table (1)Tablet (1)Trilliant (1)Tumbled (3)

gemstoneShape

Fancy (9)Heart (6)Marquise (6)Oval (11)Pear (6)Rectangle (6)Round (21)Square (6)Triangle (8)

gemstonesFilters2

Alexandrite (3)Amber (1)Amethyst (9)Ametrine (3)Aquamarine (10)Citrine (2)Diamond (68)Diamond Fancy Color (42)Emerald (28)Garnet (20)Iolite (1)Jade (12)Lapis Lazuli (1)Moonstone (8)Morganite (2)Opal (16)Pearl (44)Peridot (8)Rose Quartz (3)Ruby (58)Sapphire (51)Spinel (15)Sunstone (6)Tanzanite (12)Topaz (14)Tourmaline (32)Turquoise (6)Zircon (4)

类型

实验室培育钻石工作坊

April 24, 2026

Laboratory-Grown Diamond Seminar/Workshop

Tom Moses（汤姆·摩西）将于五月离开 GIA

April 22, 2026

夏季时尚理念：彩色俏皮珠宝

April 22, 2026

GIA 台湾校区焕新启程‧崭新亮相

April 22, 2026

收费表

April 21, 2026

服务费用清单以 7 种货币表示。

AJDC 珠宝藏品

April 16, 2026

GIA 博物馆展出的当代珠宝作品由美国珠宝设计协会捐赠。

节假日安排和休业

April 16, 2026

珠宝设计证书 (Jewelry Design Certificate)

April 14, 2026

学习珠宝设计课程后，便可随时将您的灵感转化成设计。您将学习绘图、着色、设计理论，并学习如何使用多种媒介来说明形状和形态及其他内容。该珠宝设计课程结束后，您将拥有自己的手绘和数码版本作品集，可以展示给潜在雇主和客户。

求职者常见问答

April 14, 2026

帮助参加本次活动的求职者的常见问答。

GIA将于2024年推出全新珠宝工艺师文凭课程

March 31, 2026

GIA美国宝石研究院将于2024年推出更新版珠宝工艺师（Graduate Jeweler）文凭课程。

GIA 前理事 George Rossman（乔治·罗斯曼）博士去世

March 31, 2026

GIA 卡尔斯巴德毕业生荣获布契拉提基金会珠宝设计奖

March 30, 2026

GIA (Gemological Institute of America), together with the Gianmaria Buccellati Foundation, presented the ninth annual Gianmaria Buccellati Foundation Award for Excellence in Jewelry Design on February 6, 2026, to GIA Carlsbad graduate Catherine “Cathy” Aulick.

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