Nina Wynn · Gemstone encyclopedia
Find the story behind the stones you wear. This gemstone encyclopedia brings together 28 guides to the gemstones, jewelry materials, mineral formations, and crystal surfaces in Nina Wynn’s current catalog. Start with a name, a favorite color, or a practical question about care. Each guide explains material identity, what to compare when choosing jewelry, relevant treatments, and how the material fits into everyday wear.
Find a stone, then explore the piece
Use the directory to browse every guide, or search for a stone name, color, mineral family, or birthstone month. The categories distinguish birthstone-related materials, additional jewelry materials, and crystal formations or surfaces. They are ways to browse the same encyclopedia, not a ranking of quality or value.
Each guide links to related materials and selected Nina Wynn products. Product-family listings can offer several stones, metals, or sizes; confirm the selected option and current specifications on the product page. The material guide explains a category. It does not certify the origin or treatment history of every individual stone in a design family.
Find your gemstone
Browse all 28 guides, or narrow the directory by name, color, family, or month. Try blue, quartz, pearl, November, geode, or drusy.
28 of 28 guides shown
No matching guide. Try a shorter name or clear the filters to see all 28.
Birthstone-related material
Amethyst
Purple quartz, from pale lilac to deeper violet. Compare color, cut, and everyday care.
Read the guide
Jewelry material
Apatite
Vivid blue-green color with moderate hardness. Consider beads, components, and realistic wear.
Read the guide
Birthstone-related material
Aquamarine
Pastel blue beryl. Understand color, treatment questions, and the difference from blue topaz.
Read the guide
Jewelry material
Chrysoprase
Apple-green chalcedony with a soft glow. Explore identity, color, polish, and care.
Read the guide
Birthstone-related material
Citrine
Golden quartz with a warm palette. Explore heat treatment, quality, and November links.
Read the guide
Birthstone-related material
Diamond
Natural and laboratory-grown diamonds. Compare origin, setting, quality information, and care.
Read the guide
Formation or crystal surface
Druzy / Drusy
Also spelled drusy: a coating of tiny crystals. Understand the material, matrix, finishes, and care.
Read the guide
Birthstone-related material
Emerald
Green beryl with individual internal features. Understand filling, buying questions, and gentle cleaning.
Read the guide
Birthstone-related material
Garnet
A mineral family beyond red. Explore colors, variety names, jewelry choices, and care.
Read the guide
Formation or crystal surface
Geode
A crystal-lined cavity formation. Learn about the rim, matrix, mineral contents, and exposed surfaces.
Read the guide
Jewelry material
Hematite
Steel-gray metallic luster. Distinguish the mineral from manufactured look-alikes and magnetic trade names.
Read the guide
Jewelry material
Labradorite
Gray feldspar with directional blue-green flash. Learn what to look for in movement.
Read the guide
Jewelry material
Lapis Lazuli
A deep blue rock mixture. Understand pyrite flecks, calcite, treatments, and careful cleaning.
Read the guide
Jewelry material
Moissanite
Silicon carbide with lively fire. Compare it clearly with natural and laboratory-grown diamond.
Read the guide
Birthstone-related material
Moonstone
Feldspar with a moving sheen. Learn about adularescence, rainbow moonstone, and protection.
Read the guide
Jewelry material
Onyx
Black and green trade appearances. Understand chalcedony, color treatment questions, and construction.
Read the guide
Birthstone-related material
Opal
Changing play-of-color. Compare solid opal, doublets, triplets, and construction-specific care.
Read the guide
Birthstone-related material
Pearl
An organic gem with soft luster. Understand cultured pearls, shapes, treatments, and care.
Read the guide
Birthstone-related material
Peridot
Warm green olivine. Compare color, jewelry suitability, and August gift ideas.
Read the guide
Jewelry material
Pyrite
Brassy iron sulfide. Explore its metallic texture and the importance of keeping jewelry dry.
Read the guide
Jewelry material
Quartz (Included)
Quartz with individual internal patterns. Separate the host’s identity from unconfirmed inclusion names.
Read the guide
Jewelry material
Rhodochrosite
Soft pink manganese carbonate, often banded. Choose a design with its care needs in mind.
Read the guide
Birthstone-related material
Ruby
Red corundum. Learn how origin, heating, filling, and setting affect a jewelry choice.
Read the guide
Birthstone-related material
Sapphire
Blue and fancy-color corundum. Explore color choices, treatments, and regular wear.
Read the guide
Birthstone-related material
Spinel
Black and colored spinel. Compare polish, brightness, identity, and August connections.
Read the guide
Birthstone-related material
Topaz
Blue, white, and other topaz colors. Understand treatments, cleavage, and cleaning.
Read the guide
Birthstone-related material
Tourmaline
Pink, green, and multicolor gems. Compare a single stone or a considered color arrangement.
Read the guide
Birthstone-related material
Turquoise
Opaque blue to green. Understand matrix, treatments, source names, and gentle care.
Read the guideGemstone, mineral, rock, or formation?
A gemstone is a material used for its beauty in jewelry. Many familiar examples are minerals or mineral varieties: amethyst is a purple quartz, aquamarine and emerald are beryls, and ruby and sapphire belong to corundum. A shared family can explain a relationship without making all its members identical in appearance or care.
Lapis lazuli is a rock made from several minerals. Pearl is an organic gem formed by mollusks. Geode describes a cavity-bearing formation, while druzy describes a surface covered with small crystals. A geode can contain druzy, but neither name alone identifies the actual minerals. Those distinctions are useful when comparing a piece or deciding how to clean it.
Choose by the effect you want
For transparent color, compare the gemstone in movement and more than one type of light. A pale aquamarine, a wine-red garnet, and a bright peridot create different moods at the same size. Check measurements in millimeters so a magnified photo does not define your expectation.
For opaque stones, consider the color block, polish, pattern, and silhouette. Turquoise, chrysoprase, lapis, and onyx do not need diamond-like sparkle to be beautiful. For moving light, look at moonstone, labradorite, and opal in video when available. For texture, examine geode rims, druzy crystal coverage, or the rhythm of pyrite and hematite beads.
Think about where the jewelry will sit. An earring or pendant usually receives fewer knocks than a ring or bracelet. A more exposed setting may need more careful habits. The best choice is a material, design, and care routine you are comfortable using together.
Four questions to ask before buying
What is the material? A color word or romantic trade name is not a mineral identification. Ask about the actual gemstone and whether a layered or composite construction is present.
How did it originate? Natural and laboratory-created describe origin. Laboratory-grown diamond is diamond; moissanite is a different material. A cultured pearl is a pearl, but its growth begins with human assistance.
What treatments are known? Natural does not automatically mean untreated. Heating, dyeing, filling, impregnation, or coating can affect comparison and care in different ways. Disclosure should concern the specific piece.
What is included? Confirm the metal, dimensions, attachment system, selected gemstone, and selling unit. A charm, ear chain, threadless end, or connector may require another component or professional installation. An attractive design is more useful when it is compatible with how you plan to wear it.
Hardness is only the start of care
Mohs hardness measures resistance to scratching. It does not measure every aspect of durability, and the scale is not a set of evenly spaced steps. Impact resistance, cleavage, fractures, chemical sensitivity, treatments, and setting construction also matter. Topaz is a useful example of a hard gem that still needs protection from a sharp blow.
Use each material’s own care section. There is no single soak, chemical dip, ultrasonic cycle, or polishing cloth suitable for all 28 topics. Pearl, turquoise, soft carbonates, assembled opal, coated surfaces, and exposed crystal formations call for particular attention. Mixed-material jewelry follows its most delicate component.
Store pieces separately, inspect settings and attachments, and stop wearing a jewel if a stone moves or a surface begins to shed. For permanent jewelry, discuss the material’s care and a practical servicing or removal plan before installation. Permanent fastening does not make every gemstone waterproof or resistant to every activity.
Explore by birthday
The birthstone guide offers a month-first route into jewelry. This encyclopedia gives each material room for its own color range, identity, and care, whether or not it has a birthstone role. Use both when choosing a birthday gift: begin with the month, then compare the actual material and design.
Several months have more than one option. June includes pearl and moonstone among its choices; August includes peridot and spinel; October includes opal and tourmaline; November includes topaz and citrine. You can also choose a stone simply because it is the wearer’s favorite color. A calendar is a starting point, not a rule about what someone may wear.
Make the meaning personal
Gemstones can mark a memory, a place, a birthday, or a milestone. Traditional symbolism can be part of that story when it is presented as tradition or personal interpretation. These materials are not medical treatments and should not be promised to change fertility, mood, wealth, or physical health.
The most useful gift combines a personal reason for choosing it with accurate material information and care instructions. If you would like help comparing colors, scale, or compatible components, the Nina Wynn team can help you work from the actual piece.
Frequently asked questions
Is every item in this encyclopedia a mineral?
No. It includes mineral gems, an organic material, a rock, and formation or surface terms. The individual guides identify those differences rather than assigning one mineral label to everything.
Where can I find geode and druzy information?
Both have dedicated guides in the directory. Geode explains crystal-lined cavities; druzy, also spelled drusy, explains small-crystal surfaces, coatings, and their care.
Does a guide prove a particular product is untreated?
No. General education does not establish the history of an individual stone. Read the product disclosure and request supporting information where origin or treatment matters to your choice.
Can I link directly to care information?
Yes. Every guide has a care section and other named sections. Use the material’s guide URL with #care to open the relevant care information directly.
Sources & further reading
Each material guide includes its own references. Start with GIA’s Gem Encyclopedia, GIA’s introduction to treatments, and the Handbook of Mineralogy for further study. Editorial illustrations show general appearances; they are not diagnostic evidence or product photographs.
