Calibrated 4 x 4 mm Square Shape Loose Natural Gemstones from GemS...

Some people by gems by color or price, but for many, it is best to buy gems by shape and size - especially if you're in need of a gem to replace a previous item that was lost or damaged. Calibrated Square shapes, facet cut and cabochon gems available now in 4 mm x 4 mm size range. Shop a wide range of calibrated gemstones by size online at wholesale from GemSelect.

As a general guideline, when it comes to 'calibrated' gems, they are not meant nor expected to be cut to exact measurements. For calibrated gemstones weighing under one carat, most jewelry settings will accommodate a gem which is within 0.2 mm of the calibrated size in order to fit a standard setting. For gemstones that weigh over one carat, a larger variance is acceptable, often around 0.3 mm or slightly higher even. This small variance can usually be accommodated for standard style settings. Round-cut gemstones should also have a greater variance in acceptable size when it comes to calibration; in fact it is usually possible to mount a round stone of any size in the closest standard setting.

Read All

Gemstone Information

Find More Content Here

Over 19 Years in the Gemstone Business!

Thank you for trusting us with your purchase!

Overall Rating -> 10

I was pleased with the selection of gems, the ease of navigating, and the smooth checkout

Posted By JamesMichael781 in September, 2023

Source: Bizrate

Overall Rating -> 10

I found it to be easy to browse and easy to use

Posted By Kyle in December, 2023

Source: Bizrate

Overall Rating -> 10

Todo muy bien en la compra ahora esperar recibir el pedido.

Posted By MAGSMX in August, 2023

Source: Bizrate

Overall Rating -> 10

Excellent site.

Posted By Boru in December, 2023

Source: Bizrate

Overall Rating -> 10

Easy to find the stones I was looking for. Always good quality stones

Posted By Erin in June, 2023

Source: Bizrate

Overall Rating -> 10

I love GemSelect, photos and details are great.

Posted By #1 in February, 2024

Source: Bizrate

Overall Rating -> 10

The website is easy to navigate and the images are incredible.

Posted By Lindsy in October, 2023

Source: Bizrate

Overall Rating -> 10

I was looking for ammolite for my husband. Other websites are not always clear about whether they have genuine ammolite or simulated ammolite. I have purchased from GemSelect before and trust that the stones are genuine. Finding the stones I want is easy, and I love all of the search filter options!

Posted By Ana in September, 2023

Source: Bizrate

Overall Rating -> 10

Great selection and excellent website.

Posted By JBW in October, 2023

Source: Bizrate

Overall Rating -> 8

Many gems at reasonable pricing

Posted By Skittlebird in May, 2024

Source: Bizrate

Overall Rating -> 7

I feel pretty good so far, pending the delivery of the item ordered.

Posted By Steve in November, 2023

Source: Bizrate

Overall Rating -> 10

The website design is a bit finicky for mobile, but Im sure its most likely just a mobile issue. Amazing selection of products, great prices.

Posted By Kuba in December, 2023

Source: Bizrate

Overall Rating -> 9

I was in the market for birthstones for a lil gift project im doing. I'm no expert in gems or what not but the quality as far as i can tell seems to be spot on.

Posted By PixelComposer in January, 2024

Source: Bizrate

Overall Rating -> 9

Overall good, shipping prices just seem a little on the high side.

Posted By Steve in August, 2023

Source: Bizrate

Overall Rating -> 10

The website is well organized and works fast forward and back. Plenty of filters. Each gem is described in detail and you receive the one pictured. Gem material info and sources available. I would like to see more specifics on sources besides country- at least region or state and in the US with Turquiose which mine. Thanks!

Posted By Orchidisle in February, 2024

Source: Bizrate

Gemstone SHOP

POLICIES

WHO ARE WE?

Gemstone EDUCATION

WE ARE LOCATED AT

183/24-25 Moo 4, Trirat Rd.
T. Chantanimit, A. Muang
Chanthaburi 22000
THAILAND
Phone: 1-800-464-1640
Phone: +66-39601289

STAY IN TOUCH | NEWSLETTER

*You're signing up to receive GemSelect promotional email.

Switch to Mobile Version

Reproduction (text or graphics) without the express written consent of GemSelect.com (SETT Company Ltd.) is strictly prohibited.

982

Gemstones A-Z

Buy Square Shape 4x4 mm Gems

3.33 ct Round Strawberry Quartz, 7.2 mm From Russia

16.52 ct Brown Moonstone, 20.1 x 15.1 mm Oval Cut From India

2.05 carat Pear Shape Black Opal, loose Certified Black Opal from Ethiopia, Natural Gem, 14.4 x 8.4 mm

1.61 ct Loose Green Tourmaline, 6.9 mm Round Cabochon From Mozambique

4.55 ct Orange Sunstone, 10.8 mm Round Cut From India

28.49 ct Yellow Quartz, 20.7 x 15.7 mm Oval Cut From Brazil

3.81 ct Yellow Sillimanite, 9 x 6.9 mm Oval Cut From Sri Lanka

1.58 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 5.1 x 5 mm

2.75 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 6.9 x 4.8 mm

2.39 carat Blue Tanzanite, Oval loose Tanzanite from Tanzania, Natural Gem, 8.8 x 7 mm

2.07 ct Loose Orange Moonstone, 8.2 x 8 mm Trillion Cut From India

26.27 ct Blue Aventurine, 34.3 x 10.2 mm Pencil Cut From Brazil

2.3 ct Cushion Cut Peridot, 7.8 x 7 mm From Myanmar

0.72 ct Blue Green Apatite, 6.8 x 4.9 mm Oval Cut From Madagascar

2.07 carat Yellow Citrine, Trillion loose Citrine from Brazil, Natural Untreated Gem, 9.2 x 9.1 mm

3.47 carat Blue Tanzanite, Oval loose Tanzanite from Tanzania, Natural Gem, 10.3 x 7.5 mm

4.09 carat Marquise Cut Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 12.1 x 6 mm

3.17 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 11 x 8.9 mm

5.77 ct Oval Cut Strawberry Quartz, 14 x 10.1 mm From Brazil

19.53 ct Oval Onyx, 25.1 x 18.1 mm From Sri Lanka

2.44 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 7.1 x 5 mm

7.73 ct Oval Tiger's Eye, 12.3 x 8.3 mm From Thailand

46.04 ct Oval Psilomelane Dendrite, 38.3 x 26.9 mm From Mexico

13.42 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 7.1 x 5.1 mm

2.75 carat Orange Zircon, Emerald Cut loose Zircon from Tanzania, Natural Untreated Gems, 7.2 x 5 mm

1.01 ct Oval Sillimanite Cat's Eye, 5.8 x 5.7 mm From Madagascar

0.35 ct Blue Kyanite, 3.8 mm Round Cut From Nepal

0.68 carat White Topaz, Oval loose Topaz from Brazil, Natural Untreated Gem, 6.1 x 4.2 mm

1.75 ct Green Sphene, 8 x 6.6 mm Oval Cut From Sri Lanka

0.82 carat Orange Spessartite Garnet, Oval loose Spessartite Garnet from Mozambique, Natural Untreated Gem, 6.5 x 4.9 mm

2.23 carat White Opal, Oval loose Opal from Australia, Natural Untreated Gem, 11.4 x 8.9 mm

1.99 ct Loose Princess Cut Sapphire, 2.4 x 2.3 mm From Tanzania

Gemstone Information

Gemstone SHOP

POLICIES

WHO ARE WE?

Gemstone EDUCATION

WE ARE LOCATED AT