Home / How It Works / Choosing Diamond and Gemstone

Find The Perfect Diamond or Gemstone For Your Custom Jewelry

At The Custom Jeweler, we understand that selecting the right diamond or gemstone is one of the most important steps in creating a truly personal and meaningful piece. That’s why we offer natural diamonds and lab-grown alternatives—sourced with precision and care.

Our expert gemologists have direct access to international diamond markets, ensuring you get the highest quality stone at the best possible value. Whether you’re looking for a dazzling engagement ring centerpiece, a unique birthstone, or a vibrant gemstone for a custom creation, we guide you through every step of the process.

Custom Jewelry

How We Help You Choose the Perfect Diamond or Gemstone

1 Tell Us YourVision

Share your ideas, whether it’s for an engagement ring, necklace, or heirloom-quality piece. Let us know your budget and gemstone preferences.

2 We Source the Best Options

Using our global diamond network, we hand-select the top stones that meet your criteria, ensuring the best possible price without compromising quality.

3 You Review &Select

We provide detailed information and high-resolution images of each recommended diamond or gemstone, so you can make an informed decision with confidence.

4 Your Custom Jewelry Comes to Life

Once you’ve chosen your perfect stone, we begin the custom design and crafting process, ensuring your jewelry is as breathtaking as the moment it represents.

The Custom Jeweler Experience

 
 
Unbiased diamond buying advice
Hand-curated options
Access to millions of diamonds on the market
No pushy sales tactics
100% Made In The USA
The Custom
Jeweler
Online JewelryRetailers
Jewelry
Stores

Diamond Cut Grades: How A Diamond Is Cut Affects It's Brilliance

The way a diamond is cut has the biggest impact on how it looks in real life—its sparkle, brightness, and overall personality. Here’s how each cut grade plays into your custom engagement ring, custom pendant, or custom earrings design.

Look
On the Hand
Best For
Excellent (EX)
Excellent Cut
Top Performance • Maximum Sparkle

Exceptional brilliance and fire with even, bright light return from every angle.

Clean, crisp sparkle that looks lively in all lighting—perfect for center stones.

Clients who want the most radiant look and prioritize cut quality.

Very Good (VG)
Very Good Cut
Bright & Beautiful • Near-Top Sparkle

Strong brilliance and fire with only minor differences from Excellent to the naked eye.

Beautiful, lively sparkle that performs very well in everyday lighting.

Custom pieces where you want a balance of high performance and budget flexibility.

Good (GD)
Good Cut
Pretty Sparkle • Thoughtful Value

Noticeable sparkle with some areas of darkness or reduced light return.

Still attractive, especially in smaller stones or designs with multiple diamonds.

Accent stones, pavé, or clients who prefer to prioritize size over top-tier cut.

Fair (F)
Fair Cut
Subtle Sparkle • Compromised Light

Limited brilliance; the diamond can appear slightly dull or flat.

Less “wow” factor, especially in larger sizes or center stones.

Only specific design situations where cut is less visible and budget is primary.

Poor (P)
Poor Cut
Low Sparkle • Noticeable Light Loss

Dull appearance with obvious dark areas and minimal fire.

Often looks smaller and less lively than its carat weight suggests.

Generally not recommended for custom fine jewelry at The Custom Jeweler.

Start Your Diamond or GemstoneSearch Today

Choosing the right diamond or gemstone doesn’t have to be overwhelming. With The Custom Jeweler, you get access to expert guidance, global sourcing, and the best deals on natural, lab-grown diamonds and gemstones.

Get Started

Experience Our Work

✨ 14K Yellow Gold 0.62ctw Diamond Signet Ring ✨ A modern take on a classic style, this 14K yellow gold signet ring features 0.62 carats total weight of natural diamonds, combining clean lines with eye-catching brilliance for a distinctive, refined look. Love this look? Use it as inspiration to create a ring that’s uniquely yours—from engagement rings and signet rings to fashion rings, anniversary bands, stackable styles, and meaningful everyday designs. We can craft your vision in 14K or 18K gold, or platinum, with your choice of natural diamonds or lab-grown. #DiamondRing #SignetRing #customjewelry #CustomMadeJewelry #Diamonds Go to thecustomjeweler.com to get started or call 646 569 3678
✨ 14K White Gold 2.53ct Pear Diamond Pendant on Omega Chain ✨ A striking pear-shaped diamond deserves a setting that lets it shine. This elegant 14K white gold pendant features a beautifully proportioned 2.53-carat pear diamond suspended from a classic omega chain, creating a sophisticated look that’s perfect for everyday luxury or life’s most memorable occasions. Love this design? Use it as inspiration to create your own custom pendant. We can craft your vision in 14K or 18K gold or platinum with the natural or lab diamonds or gemstones of your choice. #TheCustomJeweler #CustomJewelry #DiamondPendant #PearDiamond #custommadejewelry
✨ 18K White & Yellow Gold 3.03ct Fancy Light Yellow Radiant Diamond Engagement Ring ✨ A striking fancy light yellow radiant-cut diamond takes center stage in this elegant two-tone engagement ring, blending warm yellow gold with crisp white gold for a timeless yet distinctive look. Love this design? Use it as inspiration to create your own custom engagement ring. We can craft your vision in 14K or 18K gold, or platinum, with your choice of natural diamonds and gemstones—made just for you. #TheCustomJeweler #CustomJewelry #CADJewelryDesign #CustomMadeJewelry #CustomEngagementRing
View More On Instagram
Leave us a message

Leave us a message. A designer will review it and reply within one business day.

Message Sent!

We've received your message. A designer will reply within one business day.