608 5th Avenue, Third Floor · New York, NY 10020       Phone Icon  (212) 391-0633

  • Instagram Page Lauren B
  • Pinterest Page Lauren B
  • YouTube Page Lauren B
  • Blog Lauren B

CART (0)

GIA Graded Diamonds

The Gemological Institute of America (GIA) is considered the most prestigious and established grading institution with a reputation for having the most stringent grading system in the industry. It is considered the golden standard for diamond grading, and their certificates are widely recognized and respected around the world. At Lauren B, all of our diamond center-stones are accompanied by a GIA grading report.
Shop GIA Diamonds

Diamond Selection

Thanks to years of experience and knowledge, our diamond experts have carefully curated our inventory of loose stones to maximize brilliance and value. From natural to lab-grown diamonds and moissanite to color gemstones, our inventory has something for everyone. Compare several options side by side, either in person or online, and be confident before selecting your center stone.
Learn More

GIA Graded Diamonds

The Gemological Institute of America (GIA) is considered the most prestigious and established grading institution with a reputation for having the most stringent grading system in the industry. At Lauren B, all of our diamond center-stones are accompanied by a GIA grading report.
Shop GIA Diamonds

Diamond Selection

Thanks to years of experience and knowledge, our diamond experts have carefully curated our inventory of loose stones to maximize brilliance and value. Compare several options side by side, either in person or online, and be confident before selecting your center stone.
Learn More

LAB Created Diamonds

Lab diamonds have become increasingly popular due to their identical appearance to natural, mined diamonds. In fact, lab-grown diamonds are just as real as natural diamonds—the only difference being where they were formed and the fact that they are over 75% less expensive than their natural diamond counterparts.
SHOP LOOSE LAB DIAMONDS SHOP LAB DIAMOND ENGAGEMENT RINGS

Color Gemstones

Color gemstones, both mesmerizing and beautiful, owe their uniqueness to a complex formation process influenced by factors like pressure, temperature, space, and time. Trace elements then impart distinctive hues, defining the various types of color gemstones we admire.
SHOP LOOSE COLOR GEMS SHOP COLOR GEM RINGS

LAB Created Diamonds

Lab diamonds have become increasingly popular due to their identical appearance to natural, mined diamonds. In fact, lab-grown diamonds are just as real as natural diamonds—the only difference being where they were formed.

Color Gemstones

Color gemstones, both mesmerizing and beautiful, owe their uniqueness to a complex formation process influenced by factors like pressure, temperature, space, and time.

Diamond Carat Sizes on Hand Videos

A practical approach to finding your preferred diamond shape and carat size is to imagine how it looks on your hand. Leaf through our diamond videos, categorized by shape, ranging from 1 carat to 5 carats and growing in increments of 0.25 carats.
A practical approach to finding your preferred diamond shape and carat size is to imagine how it looks on your hand.
BROWSE VIDEO GALLERY

Unique Diamond Shapes

In addition to a comprehensive range of traditional diamond shapes, our inventory boasts exclusive diamond cuts available only at Lauren B. Our collection features antique cuts cushions, ovals, and marquises, as well as modern hybrid diamond cuts that seamlessly blend faceting patterns from various diamond shapes into exquisite, one-of-a-kind stones.
SHOP ANTIQUE CUSHION DIAMONDS SHOP HYBRID STEP-CUT DIAMONDS

Moissanite Gemstones

Moissanite is not a diamond simulant or substitute–it is its own gem and occurs very rarely, albeit naturally, within the earth. However, most moissanite used in jewelry today are lab created as natural moissanite would be incredibly expensive. Before lab-grown diamonds became popular, moissanite was the most common natural diamond alternative with its high refractive index, similar optical properties, and high ranking on the Mohs scale.
SHOP MOISSANITE RINGS SHOP LOOSE MOISSANITE GEMS

Unique Diamond Shapes

In addition to a comprehensive range of traditional diamond shapes, our inventory boasts exclusive diamond cuts available only at Lauren B.
ANTIQUE CUSHION DIAMONDS HYBRID STEP-CUT DIAMONDS

Moissanite Gemstones

Moissanite is a popular natural diamond alternative with its high refractive index, similar optical properties, and high ranking on the Mohs scale.
MOISSANITE RINGS LOOSE MOISSANITE GEMS

Diamond Education

Carat, color, clarity, and cut are the four pillars that determine diamond quality and size. Make an informed decision by educating yourself on the important standards of diamond grading.
4 C's Overview
Lab-grown diamonds have the exact chemical makeup and physical appearance as a natural-mined diamond; the only difference, one was made in a lab and one was formed in the Earth’s mantle.
Natural vs. Lab Diamonds
With so many options to choose from, learn all about the different types of side stones and which pair best with the center of your three-stone ring.
Diamond Side Stones
Each diamond shape, or cut, has unique characteristics that make it distinguished and desirable. Find the shape that speaks to you.
Diamond Shapes

Schedule Appointment

In-Store
Visit our showroom in Manhattan to browse our showcases and meet one-on-one with a diamond consultant who will walk you through our custom design process.
Schedule Appointment
Virtual/Online
Can’t make it to our showroom? Virtually view our exclusive ring designs and loose stone inventory up close with a Lauren B design consultant.
Schedule Appointment

Schedule Appointment

In-Store
Visit our showroom in Manhattan to browse our showcases and meet one-on-one with a diamond consultant who will walk you through our custom design process.
Schedule Appointment
Virtual/Online
Can’t make it to our showroom? Virtually view our exclusive ring designs and loose stone inventory up close with a Lauren B design consultant.
Schedule Appointment

Diamonds & Gems FAQs

What are the 4C’s of diamonds?
The 4 C’s of diamonds are Color, Cut, Clarity, and Carat. Color refers to how white a diamond is on a scale of D-Z. Cut refers to the exact proportions, quality of polish and the arrangement of a diamond’s facets. Clarity refers to the presence of inclusions in a diamond. Carat weight is a measurement of a diamond’s weight.
What are the different types of diamond shapes?
There are several different diamond shapes and cuts, some that are probably still being invented as you read this. The most popular diamond shapes and cuts available at Lauren B include Oval Shapes, Radiant Cuts, Antique and Modified Cushion Cuts, Round Brilliants, Emerald Cuts, and Pear Shapes. After that come Marquise Cuts, Asscher Cuts, Princess Cuts, Heart Shapes, and Hybrid Step-Cuts. You can learn more about what makes each shape unique here.
Are Lauren B diamonds ethically sourced?
All of our diamonds are conflict free, based upon our personal knowledge and the information provided to us by our suppliers who follow the Kimberley Process. We will always strive to uphold the legitimacy of the diamond trade and disclose the source of all our gemstones.
How are lab-grown diamonds created?
The two processes in which diamonds are formed in a lab are Chemical Vapor Deposition (CVD) and High Pressure High Temperature (HPHT). Both processes can take the diamond up to 12 weeks to form. To learn more about each process, you can read our blog, An In Depth Look at CVD vs. HPHT.
Can you tell the difference between a natural and lab-grown diamond?
Contrary to popular belief, no one can tell the difference between a natural and lab-grown diamond just by looking at it with the naked eye. Only a trained gemologist can tell the difference between the two diamonds by using a loupe or a special diamond tester.
Are the same cuts available for both natural and lab-grown diamonds?
Yes! All natural and lab created diamonds can be cut the same. However, some cuts are harder to find in natural diamonds than lab diamonds because they require more rough diamond to be cut. Due to this, diamond cutters will oftentimes refuse to cut these shapes so as not to waste rough, natural diamond.
Can diamonds get scratched?
Diamonds are the toughest mineral on Earth, ranking at 10 on the Mohs Hardness Scale. They are the most durable gemstone which is why they are the best center stone option for everyday jewelry and engagement rings. The only other object that can scratch a diamond is another diamond. However, this does not mean that diamonds are indestructible and we recommend airing on the side of caution with all diamond jewelry.
Are loose diamonds safe to buy online?
Yes and no; if you are in the market to buy a loose diamond online, make sure you are receiving as much information about the diamond as possible to assure you are not being scammed. This includes, but is not limited to, diamond details, grading report (if applicable), videos, and pictures. At Lauren B, we have our own exclusive inventory of loose diamonds complete with individual videos of each diamond, diamond on the hand videos showing size, diamond detail charts, GIA reports, and the option to hold and/or purchase the diamond straight from our website. Once you decide to move forward with a loose diamond, one of our design consultants will reach out to you to discuss next steps and send any additional videos and or pictures at your request!
Can Lauren B arrange my loose diamond in a custom setting ring?
Of course! However we do have a small setting fee for outside diamonds, similar to a “corkage fee”: diamonds under 3 carats are $300 to set and diamonds over 3 carats are $400 to set.
Does Lauren B provide a GIA report for their diamonds?
Yes. Almost all of our diamonds in our loose stone inventory and already set in rings in our showcase are GIA certified and upon purchase, will come with their GIA report. Additionally, you can preview each GIA report on our website on specific product pages.
Are diamond carat and diamond size the same thing?
Diamond carat and diamond size are related but they are not the exact same; carat is not a measure of a diamond’s size but, rather a measure of a diamond’s weight. To determine a diamond’s actual size, we also look carefully at its spread or measurements. This is measured in millimeters and tells how large or small the diamond appears face up in relation to its weight.
Does Lauren B sell other types of gemstones?
Yes, our loose stone inventory carries Moissanite and a range of color gemstones while our showcases have hundreds of Moissanite and color gemstone rings.