FAQ

Lab-grown gemstones are gemstones created in controlled laboratory conditions rather than mined from the earth. They are grown from chemical ingredients associated with the gemstone type and can share its crystal structure, composition, color, and optical properties. They are not the same as glass or plastic imitation stones. Product details should still identify the specific gemstone because emerald, sapphire, ruby, and moissanite are different materials.

Yes. Lab-grown gemstones are real gemstones created by controlled growth processes. They can have essentially the same chemical composition and crystal structure as the corresponding mined gemstone, although inclusions and growth features may differ. The term “lab-grown” describes origin, not whether the stone exists as a genuine crystalline material. It should not be confused with “natural,” which means the gemstone formed in the earth.

Lab-grown gemstones are made by recreating the heat, pressure, chemistry, or solution conditions needed for crystal growth. The precise method varies by gemstone and supplier. Common processes include flame fusion, flux growth, hydrothermal growth, and crystal-pulling methods. Because Lumingem carries more than one gemstone type, check each product description for the disclosed stone rather than assuming every item uses the same growth method.

They are similar in gemstone identity but different in origin. A lab-grown emerald, sapphire, or ruby is created in a controlled environment, while a natural stone forms in the earth. Both may share key chemical, crystal, and optical properties, but their inclusions, growth patterns, rarity, and market value can differ. Lumingem uses “lab-grown” or “lab-created” wording so shoppers can understand that distinction.

No. “Lab-grown” describes how a gemstone was created, not which mineral it is. Lab-grown emerald, sapphire, and ruby have different compositions and properties from lab-grown diamond. Moissanite is also a separate gemstone material. A colored lab-grown gemstone should never be described as a lab-grown diamond unless it is actually diamond, so check the gemstone name in the product details.

Lab-grown gemstones are often more affordable because controlled production reduces the mining, rarity, and sourcing factors that influence many natural-gemstone prices. Price still varies with gemstone type, size, color, cut, setting, metal, and workmanship. A lower price does not make a lab-grown stone an imitation, but it also does not mean every lab-grown gemstone has identical quality or value.

Many lab-grown gemstones are suitable for regular wear, but durability depends on the gemstone, setting, and how the piece is used. Sapphire and ruby are especially hard; emerald requires more care against impact. Remove jewelry for exercise, cleaning, swimming, or tasks that may expose it to chemicals or knocks. Inspect prongs periodically and follow the care guidance for the specific piece.

Clean lab-grown gemstone jewelry gently with lukewarm water, mild soap, and a soft brush or cloth, then rinse and dry it fully. Avoid harsh chemicals, chlorine, abrasive cleaners, sudden temperature changes, and ultrasonic cleaning unless the product and setting are confirmed safe for it. Store pieces separately to reduce scratching, and check the setting if the jewelry receives a hard impact.

Yes. Lab-grown emeralds are real emeralds grown in controlled conditions and have essentially the same crystal structure and chemical composition as mined emeralds. Their origin and growth features differ from natural emeralds, and their price is usually more accessible. Emeralds can be worn often, but their jewelry should be protected from sharp impacts and cleaned gently.

The main difference is origin: lab-grown emeralds develop in a controlled environment, while natural emeralds form underground. Both are emeralds, but their inclusions, growth patterns, rarity, and price can differ. Laboratory testing may be needed for definitive origin identification. Lumingem describes its relevant pieces as lab-grown emerald jewelry and does not present them as mined natural emeralds.

Lab-grown emerald rings can be durable enough for regular wear when the setting protects the stone, but emerald is less resistant to knocks than sapphire or ruby. Avoid striking the ring against hard surfaces, and remove it for lifting, sports, cleaning, or chemical exposure. Use lukewarm water, mild soap, and a soft brush rather than steam or harsh cleaners.

Yes. Lab-grown sapphires are real sapphire material created in controlled conditions, and sapphire is a very hard gemstone suitable for rings and other frequently worn jewelry. Hardness does not make a piece indestructible, so protect it from strong impacts and inspect the setting periodically. Clean with mild soap and lukewarm water unless the product guidance says otherwise.

Yes. Lab-grown rubies are real ruby material grown in controlled conditions. Ruby and sapphire are both varieties of corundum and are known for high hardness, making well-set ruby jewelry suitable for regular wear. Avoid abrasive chemicals and heavy impact, clean gently, and store the piece separately so its hard stone does not scratch softer jewelry.

Choose by color, wear habits, and the design you will use most. Emerald offers distinctive green color but benefits from extra impact care; sapphire provides strong everyday durability and many color options; ruby combines vivid red color with high hardness. Also compare the setting, metal finish, dimensions, and product-specific care notes rather than choosing by gemstone name alone.

Paraiba-color describes an electric blue, green, or blue-green appearance inspired by the color range associated with Paraiba tourmaline. Lumingem’s relevant products are described as Paraiba-color lab-grown gemstone jewelry; that wording does not claim the stone is a natural Paraiba tourmaline or that it came from a particular geographic origin. Check each product page for its exact stone and material disclosure.

Care for Paraiba-color lab-grown gemstone jewelry with mild soap, lukewarm water, and a soft cloth or brush. Avoid chlorine, bleach, abrasive cleaners, perfumes applied directly to the piece, and hard impacts. Dry the jewelry completely and store it separately. Because the gemstone and setting can vary by product, follow any more specific instructions shown on the product page.

Moissanite is a gemstone made of silicon carbide and known for strong brilliance and fire. Most moissanite used in jewelry is lab-created because naturally occurring material is extremely rare. Moissanite is not diamond, even though both can appear bright and colorless. Compare the product’s cut, size, setting, and metal details when choosing a moissanite piece.

Yes. Moissanite is a real crystalline gemstone material, not glass or plastic. Jewelry moissanite is generally created in a laboratory, but it remains silicon carbide with its own optical and physical properties. It should be described as moissanite rather than diamond because the two stones have different composition, refractive behavior, and market positioning.

Moissanite itself does not normally become permanently cloudy. Oil, soap, lotion, and everyday residue can build up on its surface and temporarily reduce its sparkle. Gentle cleaning with lukewarm water, mild soap, and a soft brush usually restores the appearance. If dullness remains, inspect the underside of the stone and the setting or ask a jeweler to check the piece.

No. Moissanite does not lose its inherent sparkle or luster under normal wear. Surface oils, dust, soap, or cosmetics can temporarily make it look dull, but this is buildup rather than the gemstone losing its optical properties; gentle cleaning restores its brilliance. The surrounding S925 silver or plated finish is separate and may tarnish or wear over time, so follow the metal-care guidance too.

Yes. Moissanite is a hard, durable gemstone that works well for rings, earrings, necklaces, and bracelets. It still can be chipped by a severe impact, and the metal setting can bend or loosen even when the stone remains intact. Remove moissanite jewelry for strenuous work and inspect prongs if the piece is knocked against a hard surface.

Moissanite and diamond are different gemstones. Moissanite is silicon carbide and often shows more rainbow-colored fire, while diamond is carbon and has a different balance of brilliance and dispersion. Both can be durable and bright, but they differ in composition, optical character, rarity, and price. Lumingem labels moissanite as moissanite rather than presenting it as diamond.

Soak moissanite jewelry briefly in lukewarm water with a small amount of mild soap, gently brush around and beneath the stone with a soft brush, rinse well, and dry with a lint-free cloth. Avoid bleach, chlorine, abrasive powders, and hard scrubbing. Clean the setting carefully because residue often collects under the stone and between prongs.

S925 sterling silver is an alloy containing 92.5% silver, with the remaining 7.5% made from other metals that improve strength. Pure silver is relatively soft, so the alloy is more practical for jewelry. The “S925” or “925” mark refers to silver fineness; it does not mean the piece is merely silver-plated.

Lumingem product pages identify S925 sterling silver when it is the stated base metal for that piece. Some designs may also have a rhodium, gold-color, or other disclosed finish over the silver. Because materials can vary by item, use the metal and finish information on the individual product page as the source for the piece you are considering.

Yes. Sterling silver can tarnish when it reacts with sulfur compounds, moisture, cosmetics, or chemicals in the environment. Tarnish is a surface reaction and does not mean the silver has stopped being genuine. Gentle polishing with a suitable silver cloth can often remove it, but plated pieces should be cleaned more cautiously to avoid wearing the finish.

Rhodium plating is a thin surface layer applied to some jewelry to create a bright, reflective finish and add surface protection. When rhodium is applied over S925 sterling silver, the base metal remains sterling silver. Plating is not permanent: its lifespan depends on thickness, friction, chemicals, skin contact, and how often the piece is worn.

Rhodium itself is resistant to tarnish, so an intact rhodium layer helps protect the sterling silver below. As the thin layer gradually wears at high-contact areas, exposed silver may tarnish. This is different from the gemstone losing luster. Clean rhodium-plated jewelry gently and avoid abrasive silver dips or polishing compounds that can remove the plating.

Yes, many S925 sterling silver pieces can be worn regularly, but everyday friction, sweat, lotions, and chemicals can accelerate tarnish or plating wear. Remove jewelry for swimming, showering, exercise, cleaning, and sleep when it may snag or rub. Put jewelry on after perfume and cosmetics, then wipe it gently before storing it in a dry place.

Brief contact with clean water is unlikely to destroy sterling silver, but repeated exposure can speed tarnish and wear on plated finishes. Chlorinated pools, salt water, hot tubs, soaps, and cleaning chemicals are more likely to affect the surface. Remove the piece before swimming or showering, and dry it promptly if it becomes wet.

Use lukewarm water, mild soap, and a soft cloth or brush, then rinse and dry the piece completely. Avoid bleach, chlorine, harsh chemicals, abrasive pastes, and rough polishing on plated surfaces. Store each item separately in a dry pouch or compartment to reduce scratching and tangling. For delicate settings, inspect prongs before cleaning and stop if a stone feels loose.

Lumingem offers jewelry described with lab-grown or lab-created emerald, sapphire, ruby, Paraiba-color gemstones, and moissanite. The exact gemstone, color, size, and setting vary by product. Read the individual product description rather than assuming every Lumingem piece contains moissanite or carries the same certification, grade, treatment, or metal finish.

Start with the gemstone color and ring style you will wear most, then compare size, setting height, band material, finish, and care needs. For frequent wear, consider how exposed the stone and prongs are during daily activities. Confirm your ring size before ordering and review the product page for the exact gemstone and S925 sterling silver details.

Measure a ring that already fits by its inner diameter or measure your finger with a non-stretch strip, then compare the result with Lumingem’s ring-size guide. Measure near the end of the day when fingers are at a normal size, and repeat the measurement. For wide bands or a size between chart values, consider comfort and the specific design before ordering.

Necklaces, earrings, and adjustable designs are often easier gifts when you do not know the recipient’s ring size. Choose a gemstone color and metal finish that match jewelry they already wear, and check the product dimensions so the scale suits their style. For a ring, confirm the exact size rather than estimating from appearance.

Lumingem ships to the destinations currently available at checkout. Enter the delivery country or region and address during checkout to confirm whether service is offered and to see the final available shipping rate. Destination availability can change, so the checkout options are more reliable than a general claim that every country is always supported.

Orders are normally processed in 1–3 business days, and transit typically takes 7–15 business days after dispatch. Delivery can vary by destination, carrier, customs, and peak periods. Tracking information is sent after shipment when available. Processing time and carrier transit time are separate, so count both when estimating arrival.

Under the current shipping policy, orders below US$50 have a US$9.99 shipping charge, orders from US$50 to US$99.99 have a US$4.99 charge, and orders of US$100 or more qualify for free shipping. The rate and options shown at checkout are final for the destination and order at that time.

Under the current policy, eligible European Union orders have a 15-day return period, while non-EU orders are generally final and non-refundable. EU customers also retain the applicable 14-day statutory cooling-off right. Items must meet the policy conditions, and customers are responsible for return shipping. Review the full return policy before sending anything back and contact shopify@lumingem.com for instructions.

After a return is received, inspected, and approved, the refund is normally sent to the original payment method within 10 business days. Your bank or card provider may need additional processing time. If more than 15 business days have passed since Lumingem approved the return, contact shopify@lumingem.com for assistance.