Best Square Loose Gemstones in 2026

DIAMOND EXPLAINATION: Each Square Silicone Moissanite is rigorous tested by GMA(Global Moissanite Research Authority) and GRA（Global Gemological Research Association) in New York and comes with a unparalleled GMA report number on the Moissanite certificate which can search on the GMA website.

GRADDING INFORMATION: The color scale of most moissanites on Amazon are D-F and the clarity is VS or SI but our round brilliant moissanite reaches D (colorless) and the clarity scale reaches the colorless standard of VVS1 with excellent polish and symmetry.

PACKING DETAILS: 1 moissanite and 1 Cetificate. (0.1ct=3mm, 0.2ct=3.5mm, 0.3ct=4mm, 0.4ct= 4.5mm, 0.5ct=5mm, 0.6ct=5.5mm, 0.8ct=6mm, 1ct=6.5mm, 1.2ct=7mm, 1.5ct=7.5mm, 2ct=8mm, 3ct=9mm, 4ct=10mm).

Ideal for jewelry designers, hobbyists, crafters, collectors, gem enthusiasts, teens (pirate’s treasure). 20-30 pieces per lot.3+carats to 20 cents in size. Mix shapes - oval, round, pear, teardrop square, trillion, cushion, emerald cut

Gems included are Garnet,Blue Topaz, Peridot, Amethyst, Citrine, Smokey Topaz, Green Onyx, Carnelian, White Topaz, Lemon Topaz, and more

Gemstone lot is created from random scoop of larger wholesale lots at GemMartUSA Inc.’s facility. Comes with tags proving origin from GemMartUSA Inc. and a signed Certificate of Authenticity from GemMartUSAInc

Jewels for diamond and gold jewelry making,engagement rings,decoration,collection,gifts - Christmas, birthday party, bridal shower or wedding favors

Ideal for jewelry designers, hobbyists, crafters, collectors, gem enthusiasts, teens (pirate’s treasure). 30-40 pieces per lot.3+carats to 20 cents in size. Mix shapes - oval, round, pear, teardrop square, trillion, cushion, emerald cut

Gems included are Garnet,Blue Topaz, Peridot, Amethyst, Citrine, Smokey Topaz, Green Onyx, Carnelian, White Topaz, Lemon Topaz, and more

NATURAL REAL GEMS WHOLESALE LOT FOR JEWELERS

100 + CARATS MIXED LOT FROM ABOVE LARGER LOTS

3+ CARAT TO .10 CARAT SIZE GEMSTONES AT RANDOM SCOOP

♥ White cubic zirconia temperature resistance 1200~1500 ℃ （2192~2732℉）

♥ Excellent Sparkle Square Princess Cut Shape Cubic Zirconia Stone to replace missing stones in jewelry

♥ Quantity: 30pcs, Color: White, Size: about 8x8mm (Product in the picture may look larger than the actual, Please pay attention to sizes)

Jewels for diamond and gold jewelry making,engagement rings,decoration,collection,gifts - Christmas, birthday party, bridal shower or wedding favors

Ideal for jewelry designers, hobbyists, crafters, collectors, gem enthusiasts, teens (pirate’s treasure). 30-40 pieces per lot.3+carats to 20 cents in size. Mix shapes - oval, round, pear, teardrop square, trillion, cushion, emerald cut

Gems included are Garnet,Blue Topaz, Peridot, Amethyst, Citrine, Smokey Topaz, Green Onyx, Carnelian, White Topaz, Lemon Topaz, and more

Emerald is the most famous member of the beryl family. Legends endowed the wearer with the ability to foresee the future when emerald was placed under the tongue, as well as to reveal truth and be protected against evil spells. Emerald was once also believed to cure diseases like cholera and malaria. Wearing an emerald was believed to reveal the truth or falseness of a lover’s oath as well as make one an eloquent speaker.

Use a soft micro-fiber cloth to remove the oil and dirt accumulated on the emerald jewelry. Do not use an ultrasonic cleaner on emerald jewelry. Ultrasonic devices and commercial jewelry cleaners will remove the oils that the emeralds have been treated with and will cause damage to the gemstones. Always put your jewelry on after you’ve applied make-up, hairspray or perfume, or the chemicals may damage the emeralds.

Few people outside the gem industry realize the true nature of a gemstone’s journey from the mine to the counter of a store. Whether the gem is being offered to consumer’s at a traditional jewelry store’s counter, an internet shopping site, or a television broadcast the journey always involves a great deal of effort. Tons of earth and countless hours of labor are needed to being a gem from mine to market.

Natural Multi Fire Labradorite Wholesale Lot Gemstone Loose Cabochon For Pendant And Ring Silver Jewelry Making Handmade Gemstone Healing Crystal Best Collection For Gift Wholesale Price For Special Order Any Shape And Size Available. And You want Big Quantity I will give you extra Discount.

Shape- Pear Oval Square Rectangle Marquise Fancy Octagon Round Trillion

Size- 12X16 And 35x40 MM

The color of a blue sapphire is more important than its clarity. Sapphires are rarely completely clean and even very expensive stones can be slightly included. Subtle differences in color can make great variations in valuations of fine gemstones. Fine loose gemstones of good color and clarity are always rare and valuable. Highly saturated medium or medium dark blue tones are best, blue sapphires which are too dark or too light are worth considerably less.

Color zoning is responsible for certain Sapphires having lighter and darker colors in different parts of a crystal. Some Sapphire gemstones may even be multicolored such as purple and blue. Sapphire is a tough and durable gem, and the only natural gemstone harder than Sapphire is Diamond. Despite this, Sapphire is still subject to chipping and fracture if handled roughly, and care should be taken to ensure it is properly handled.

Display a lighter and more intense color when viewed at different angles. Some pleochroic Sapphire is blue when viewed at one angle, and purple at a different angle. Color zoning, which forms from growth layers that build up during the formation of the stone, may also be present in certain Sapphires.

Emerald is the most famous member of the beryl family. Legends endowed the wearer with the ability to foresee the future when emerald was placed under the tongue, as well as to reveal truth and be protected against evil spells. Emerald was once also believed to cure diseases like cholera and malaria. Wearing an emerald was believed to reveal the truth or falseness of a lover’s oath as well as make one an eloquent speaker.

About the Stone - Natural Green Emerald Loose Gemstone. | Carat Wt.- 3.00 Carat approx. | Origin - Zambia | Color - Green | Certification - EGL | Form - Cut | Shape - Square Cut

Few people outside the gem industry realize the true nature of a gemstone’s journey from the mine to the counter of a store. Whether the gem is being offered to consumer’s at a traditional jewelry store’s counter, an internet shopping site, or a television broadcast the journey always involves a great deal of effort. Tons of earth and countless hours of labor are needed to being a gem from mine to market.

50+ Carats Weight (10 grams) of real natural gemstones for sorting, calibration, jewelry making, decoration or collection purposes. Ideal for jewelers, designers, hobbyists, crafters, collectors and teenage kids (as pirate's treasure chest).

Great as a gift! Lot contains variety of shapes and sizes of Red Garnet

This item comes with tags proving origin from GemMartUSA Inc. and a signed Certificate of Authenticity from GemMartUSA Inc.

Gem sizes vary from 0.2ct to 3ct. 70-80 pieces per lot. Stones are mix shapes (oval, round, pear, square, trillion, cushion, emerald cut).

100+ carats of real natural Garnet gemstones for sorting, calibration, jewelry making or collection purposes. Ideal for jewelers, designers, hobbyists, crafters, collectors and teenage kids.

This item comes with tags proving origin from GemMartUSA Inc. and a signed Certificate of Authenticity from GemMartUSA Inc.

Contents: 100 to 150 pieces approx of hand-cut and polished semi-precious natural gemstones. Random scoop from larger wholesale lots. Includes gemstone guide booklet and signed Certificate of Authenticity by GemMartUSA.

Natural Loose Gemstones: Stones included are a random mix of Garnet, Blue Topaz, Peridot, Amethyst, Citrine, Smokey Topaz, Green Onyx, Carnelian, White Topaz, Lemon Topaz, and more. Due to random selection, not all stones listed above may be present in each lot. Natural Stones always have minor defects and inclusions.

Mixed Shapes& Sizes: Random mix of Oval, Round, Pear, Teardrop, Square, Trillion, Cushion, & Emerald Shapes. Stone size 20 cents to 6+ carats. Total lot weight - 250 carats (1.76Oz)

Jewels for diamond and gold jewelry making,engagement rings,decoration,collection,gifts - Christmas, birthday party, bridal shower or wedding favors

Ideal for jewelry designers, hobbyists, crafters, collectors, gem enthusiasts, teens (pirate’s treasure). 30-40 pieces per lot.3+carats to 20 cents in size. Mix shapes - oval, round, pear, teardrop square, trillion, cushion, emerald cut

Gems included are Garnet,Blue Topaz, Peridot, Amethyst, Citrine, Smokey Topaz, Green Onyx, Carnelian, White Topaz, Lemon Topaz, and more

50+ Carats Weight (5 grams) of real natural Amethyst Mix gemstones for sorting, calibration, jewelry making, decoration or collection purposes. Ideal for jewelers, designers, hobbyists, crafters, collectors and teenage kids (as pirate's treasure chest).

Great as a gift! Lot contains variety of shapes and sizes of Amethyst

This item comes with tags proving origin from GemMartUSA Inc. and a signed Certificate of Authenticity from GemMartUSA Inc.

MOISSANITE HARDNESS: Natural diamond hardness is 10 and moissanite hardness is 9.25. so moissanite stone can not be scuffed easily. diamond & moissanite maintains its clarity and sparkle throughout a lifetime. can test 100% positive with moissanite or diamond pen.

PRINCESS CUT MOISSANITE MEASUREMENTS DETAILS: Carat weight and measurements of moissanite is as follows 0.3ct=3mm, 0.4ct=4mm, 0.6ct=4.5mm, 0.8ct=5mm, 1.0ct=5.5mm, 1.2ct=6mm, 1.5ct=6.5mm, 2.0ct=7mm, 2.5ct=7.5mm, 3.0ct=8mm, 3.5ct=8.5mm, 4.0ct=9mm, 5.0ct=9.5mm, 6.0ct=10mm.

PERFECT ACCESSORIES FOR JEWELRY MAKING: Moissanite is the best replacement to real diamond, but it’s more sparkling, brighter than the real diamond and the fire is also more stunning. It can be usd as jewelry accessories such as oval cut moissanite diamond promise ring, engagement ring ,necklace and stud earrings.

[SUFFICIENT QUANTITY] --- Meet your various demands for decoration, and you could use them to make many handicrafts, or you could share them with your friends, searching for a lot of fun from handwork together

[DURABLE & STURDY] --- The dome cabochons are made of long lasting transparent glass, which is sturdy, not easy to break, and they have a good gloss, no pointed edges, giving you a smooth touch, not easy to scratch your hands, and the flat backs are easy to adhere

[CHARMING LOOK] --- The glass tiles are featured with their transparent colors and charming appearances, giving you an exquisite feeling, and the beautiful glass sheet will make a slight magnification effect, adding more elegance to your handicrafts

Jewels are 100% natural faceted.

All gorgeous natural gems made by mother earth

Beautifully crafted, and ready to set

Moissanite can pass the test of the diamond selector, no one can easily clarify & be sure is Diamond or Moissanite.

Natural Diamond Hardness is 10 : Moissanite Diamond Hardness is 9.25 : Ruby&Emerald 9.

This amazing stone is known worldwide as the most brilliant gem in the world. Moissanite maintains its clarity and sparkle throughout a lifetime, it will never fade, it will not look like a piece of rock salt, like cubic zirconia, after two weeks.

MOISSANITE HARDNESS: Natural diamond hardness is 10 and moissanite hardness is 9.25. so moissanite stone can not be scuffed easily. diamond & moissanite maintains its clarity and sparkle throughout a lifetime. can test 100% positive with moissanite or diamond pen.

EMERALD CUT MOISSANITE MEASUREMENTS DETAILS: Carat weight and measurements of moissanite is as follows 0.2ct=2x4mm, 0.5ct=3x5mm, 0.8ct=4x6mm, 1.0ct=5x7mm, 2.0ct=6x8mm, 3.0ct=7x9mm, 4.0ct=8x10mm, 5.0ct=9x11mm, 8.0ct=10x12mm, 10.0ct=10x14mm, 12.0ct=12x14mm.

PERFECT ACCESSORIES FOR JEWELRY MAKING: Moissanite is the best replacement to real diamond, but it’s more sparkling, brighter than the real diamond and the fire is also more stunning. It can be usd as jewelry accessories such as oval cut moissanite diamond promise ring, engagement ring ,necklace and stud earrings.

♥ Color cubic zirconia temperature resistance 600~700 ℃ （1112~1292℉）

♥ Quality : 5A Best Quality,9 inspection processes,5 experienced QC,every gemstone has its quality assurance.

♥ Perfect After-Sales Service ：Some unexpected issues might happen during delivery with many turns and stops Just contact us and we will assist you in finding a solution promptly!

Natural Blood Red Ruby in Brilliant Shape Gemstone. Best for Jewelry Making, Wire Wrapping, Pendant, Ring, Necklace and Other.

Ruby is a symbol of good fortune, pure love, and loyalty. As an aphrodisiac stone, it brings vigor into your life.

They are commonly used in solitaire rings, earrings and as accent stones in wedding / right hand bands

Explore the Sparkling World of Jewelry Making: Unleash Your Creativity with Exquisite Crystals and Jewelry Making Supplies for Adults

Polish Your Passion: Discover the Brilliance of Blue with Our Rock Tumbler for Adults, Unveiling the Magic of Rocks and Crystals for Your Opal Ring

Unearth the Power of Rocks and Healing Crystals: Enhance Your Spirituality with Opal Gemstones and Create an Exquisite Opal Necklace

The Features That Determine The Optical Beauty Of A Diamond Are: Brilliance, Dispersion, And Scintillation. Our Emeral Cut Was Developed Uniquely To Maximize And Balance The Features Of Brilliance, Dispersion, And Scintillation, Making It Shiny, Full Of Fire And Glitter.

Diamonbella Has Been Able To Achieve An Amazing 101 Facets For Our Square Cushion Cut. This Huge Number Of Angles Reflect More Light Than Other Diamonds, And They Offer Edgetoedge Brilliance That Explodes White And Colored Light, Even In Low Light Conditions, Be It Being Across The Room At A Party Or In Dimlylit Conditions. This Is Something That Cubic Zirconia (Cz) And Low Quality Diamonds Cannot Do.

Our Diamonbella Diamond Simulants Are Created In A Laboratory Under Ideal Conditions. Thus There Are No Impurities Like Trace Minerals Or Black Spot Such As Those In Real Diamonds. They Are Flawless Internally And Externally, With An Absolute Colorless D, Hence They Are Able To Exhibit More Brilliance Than A Real Diamond.

Item Properties - 70 - 80 Carat approx. | Origin - Brazil | Color - Green| Form - Cut | Shape – Square | Dimension - 29 X 29 X 10

In Feng Shui, amethyst is a powerful crystal that is said to purify spaces of negative energy. Amethyst can also be placed in doorways or on windowsills to protect a public or living space to protect from psychic attack. Owning an Amethyst is a symbol of royalty. This believes to strengthen relationships and give courage. Ancient Greeks thought that the amethyst guarded against intoxication. Amethyst derived its name from amethystos, a Greek word meaning “sober.”

Our Expert gemologists verified these gemstones which passed many quality base tests and get stone certified through which we are completely assured of Top Quality Gemstone. Only after that we deliver stones to you because we also care about your loved ones.

Contents: 200-230 pieces of hand-cut and polished semi-precious natural gemstones. Random scoop from larger wholesale lots. Includes gemstone guide booklet and signed Certificate of Authenticity by GemMartUSA.

Natural Loose Gemstones: Stones included are a random mix of Garnet, Blue Topaz, Peridot, Amethyst, Citrine, Smokey Topaz, Green Onyx, Carnelian, White Topaz, Lemon Topaz, and more. Due to random selection, not all stones listed above may be present in each lot. Natural Stones always have minor defects and inclusions.

Mixed Shapes& Sizes: Random mix of Oval, Round, Pear, Teardrop, Square, Trillion, Cushion, & Emerald Shapes. Stone size 20 cents to 6+ carats. Total lot weight - 500 carats (3.52Oz).

Hydrothermal Lab created Topaz Loose Gemstones Lot

About the Lot - 200 Carat/4 pcs lot/ Approx Weight - 40-50 Ct./ Transparency - Translucent / Origin - Brazil / Color - As shown in picture

It is sold in a broad range of colors, starting from a pale red with a light tone and saturation. These stones is very attractive, inexpensive, and a favorite color of the jewelry customer. These gemstone which cut down and polished form, it is used to make jewelry or other adornments. It also has other several uses such as jewelry making, pendant making and Home- Decor.

Hydrothermal Lab created Loose Gemstones Lot

About the Lot - 200 Carat/4 pcs lot approx./ Approx Weight of each stone - 40-50 Ct./ Transparency - Translucent / Origin - Brazil / Color - As shown in picture

It is sold in a broad range of colors, starting from a pale red with a light tone and saturation. These stones is very attractive, inexpensive, and a favorite color of the jewelry customer. These gemstone which cut down and polished form, it is used to make jewelry or other adornments. It also has other several uses such as jewelry making, pendant making and Home- Decor.

QUALITY : These gemstone beads with excellent polishing, smooth/faceted shiny surface (Each piece color & size may have difference due to the natural stone) 100% natural Gemstone beads / briolette for making jewelry. Gemstone Beads for DIY Jewerly Making Beads

USES : The Gemstone beads are excellent for Beading, Jewelry Making, Jewelry Design, DIY gifts, Arts & Craft, Necklaces, Bracelets, Yoga bracelets, Earrings, Ring, Home & Wedding Decoration. Best Gift for Man/women/girls/ Girlfriend/ Lovers/Couple/Mom. Makes a wonderful gift . These beads are also available in bigger and smaller sizes.

Natural Multi Tourmaline Gemstone Smooth Square Cabochons| Loose Tourmaline Square Shape 10 Pieces Size - 3x3- 4x4 MM [GSKU-41]

Emerald is the most famous member of the beryl family. Legends endowed the wearer with the ability to foresee the future when emerald was placed under the tongue, as well as to reveal truth and be protected against evil spells. Emerald was once also believed to cure diseases like cholera and malaria. Wearing an emerald was believed to reveal the truth or falseness of a lover’s oath as well as make one an eloquent speaker.

About Item- Natural Green Emerald Color Treated Gemstone. | Size- 39.85 Ct. approx. | Dimension - 25 x 15 x 14 mm approx. | When you will receive the item, there will be somehow plus minus difference in carat of stone of Approx. 5 - 7 carat.

Few people outside the gem industry realize the true nature of a gemstone’s journey from the mine to the counter of a store. Whether the gem is being offered to consumer’s at a traditional jewelry store’s counter, an internet shopping site, or a television broadcast the journey always involves a great deal of effort. Tons of earth and countless hours of labor are needed to being a gem from mine to market.