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Shop the largest selection of GIA and IGI certified Type IIa loose lab-created diamonds. Chemically, physically, and optically identical to earth-mined diamonds, Lab-Created Diamonds provide an affordable (priced up to 40% less) and ethical choice for anyone seeking exceptional beauty, unmatched quality, and unbeatable value.
Inventory changes daily. If you don’t see what you’re looking for, live chat or call us and we’ll find you the perfect diamond from our offline inventory.
Shape
Shape refers to the appearance of the center stone. Most diamond shapes are Round, Square (Princess, Asscher, Cushion, Radiant), Rectangular ( Emerald, Elongated Radiant, Elongated Cushion), Heart-shaped, Pear-shaped (also known as tear-drop), Oval, or Marquise (like an Oval but pointed on both ends).
Carat Size
Carat weight refers not to the size of the stone, but the weight of it; two stones may have identical carat weights but have different length x width measurements depending on the cut. If you want to choose a smaller carat weight stone, opt for a higher cut grade, as this will make the stone appear larger. When selecting a stone for a specific budget, try to go slightly under a full or half carat weight, because prices jump at those sizes. For example, a 1.9ct stone will cost less than a 2.0ct, and because carat weight is distributed across the entirety of the diamond, that size difference would be nearly impossible to detect.
Color
White diamonds range from D-F (colorless), G-H (near colorless & very difficult to detect), I-J (near colorless with slightly detectable warmth), K-Z (noticeable color). Color presents itself as a pale yellow. With Fancy Color diamonds, the intense grades will be the most color saturated.
Price
Price range for ring and accessory items are without stones set. Price range for loose stones reflect just the stone, not the ring or accessory added.
Clarity
Clarity refers to the tiny inclusions (blemishes) in a stone, and whether or not they are visible to the naked eye. Eye-clean diamonds, which are those without visible inclusions, will fall into the range of VVS1-SI1. As long as you choose a stone within that range, you will not need to worry about seeing inclusions, especially if you are selecting a stone with a higher cut grade.
Cut
The Cut of a diamond is the greatest influencer on the sparkle and brilliance of the stone, which is the first thing we see when looking at a diamond. A poorly cut diamond will appear dull and lifeless even if it is at the upper end of the color and clarity scales. As a general rule of thumb, stick with cut grades of Very Good or higher; the higher the Cut grade you choose, the lower you can go in the other C's without it significantly affecting the beauty of the stone.
Certified
Diamond grading is the process of evaluating and assigning grades to diamonds based on various criteria that determine their quality and value. Grading involves assessing and quantifying the diamond's characteristics, such as its color, clarity, cut, and carat weight. These factors are commonly known as the "Four Cs" of diamond grading. Pro Tip: Since the grading of a diamond determines its value, it is very important to purchase a diamond with an independent grading report from an American grading laboratory, such as the GIA or other reputable organizations such as GCal and IGI.
Fancy
Fancy Color diamonds can come in a wide range of colors, including shades of yellow, brown, pink, blue, green, orange, and even rare colors like red and violet. Fancy Color diamonds are graded on a separate color grading scale from colorless diamonds D to Z. The grading system for Fancy Color diamonds includes nine categories: Fancy Light, Fancy, Fancy Intense, Fancy Vivid, Fancy Dark, Fancy Deep, Fancy Light Grayish, Fancy Grayish, and Fancy Deep Grayish.
L:W RATIO
The length to width ratio in a diamond refers to the proportionate relationship between the length and width of the diamond's top view. It is a numerical expression that describes the diamond's elongation or compactness. For example, square-shaped diamonds (princess or cushion cuts), with a length to width ratio of around 1.00 to 1.05 indicate a square appearance, while ratios higher than 1.05 start to exhibit a rectangular appearance. The preference for the specific ratio varies based on personal taste, with some individuals favoring longer, slender shapes, and others preferring more balanced or compact proportions.
Table %
The table percentage grading of a diamond refers to the measurement of the table facet (the top flat surface area of the diamond) in relation to the overall diameter of the diamond. The table percentage is considered an important aspect of a diamond's cut quality and can impact its visual appearance. The ideal table percentage can vary depending on the diamond shape, as different shapes have different optimal proportions.
Fluorescence
Diamond fluorescence refers to the visible glow or emission of light that some diamonds exhibit when exposed to ultraviolet (UV) light. This phenomenon is a result of certain trace elements present in the diamond's crystal structure, such as nitrogen. When these elements interact with UV light, they can cause the diamond to emit a visible fluorescence. The intensity of diamond fluorescence is typically described on a scale ranging from None to Very Strong.
Polish
The polish grading of a diamond refers to the assessment of the quality of its surface finish or polish. It evaluates how well the diamond's facets have been polished to create a smooth and reflective surface. The polish grade is an important factor in determining the overall appearance and beauty of a diamond.
Symmetry
The symmetry of a diamond refers to the precision and quality of its cut and the alignment of its facets. It assesses how well the various facets of a diamond are shaped, positioned, and aligned in relation to one another. Symmetry plays a crucial role in the overall appearance, brilliance, and fire of a diamond.
Depth %
The depth percentage of a diamond refers to the measurement of the diamond's depth in relation to its overall diameter. It is expressed as a percentage and helps evaluate the proportions of the diamond. It plays a role in how light interacts with the diamond, affecting its brilliance, fire, and overall sparkle. Different diamond shapes and cutting styles have different optimal depth percentage ranges. For example, it is normal for a Cushion Shape diamond to have more depth than a Round Shape diamond.
Quality
Do you prioritize the diamond's quality or size first? Let us help you find the perfect diamond by selecting what is most important to you.
Superior Quality: D-F Color, IF-VVS2 Clarity, and Ideal Cut lab grown diamonds are considered superior quality.
Bigger Diamond: If you prefer a larger carat weight, this selection will filter larger diamond sizes within your carat weight range with the best price points.
Highest
Lowest
Highest
Lowest
Highest
Lowest
Highest
Lowest
Shape | Carat | Cut | Color | Clarity | Price |
---|
Shape
Shape refers to the appearance of the center stone. Most diamond shapes are Round, Square (Princess, Asscher, Cushion, Radiant), Rectangular ( Emerald, Elongated Radiant, Elongated Cushion), Heart-shaped, Pear-shaped (also known as tear-drop), Oval, or Marquise (like an Oval but pointed on both ends).
Carat Size
Carat weight refers not to the size of the stone, but the weight of it; two stones may have identical carat weights but have different length x width measurements depending on the cut. If you want to choose a smaller carat weight stone, opt for a higher cut grade, as this will make the stone appear larger. When selecting a stone for a specific budget, try to go slightly under a full or half carat weight, because prices jump at those sizes. For example, a 1.9ct stone will cost less than a 2.0ct, and because carat weight is distributed across the entirety of the diamond, that size difference would be nearly impossible to detect.
Color
White diamonds range from D-F (colorless), G-H (near colorless & very difficult to detect), I-J (near colorless with slightly detectable warmth), K-Z (noticeable color). Color presents itself as a pale yellow. With Fancy Color diamonds, the intense grades will be the most color saturated.
D E F
Colorless
G H I
Near Colorless
J K L
Slight Color
Diamonds are valued for their lack of color, so the price increases the closer it gets to colorless.
Price
Price range for ring and accessory items are without stones set. Price range for loose stones reflect just the stone, not the ring or accessory added.
Clarity
Clarity refers to the tiny inclusions (blemishes) in a stone, and whether or not they are visible to the naked eye. Eye-clean diamonds, which are those without visible inclusions, will fall into the range of VVS1-SI1. As long as you choose a stone within that range, you will not need to worry about seeing inclusions, especially if you are selecting a stone with a higher cut grade.
Cut
The Cut of a diamond is the greatest influencer on the sparkle and brilliance of the stone, which is the first thing we see when looking at a diamond. A poorly cut diamond will appear dull and lifeless even if it is at the upper end of the color and clarity scales. As a general rule of thumb, stick with cut grades of Very Good or higher; the higher the Cut grade you choose, the lower you can go in the other C's without it significantly affecting the beauty of the stone.
Certified
Diamond grading is the process of evaluating and assigning grades to diamonds based on various criteria that determine their quality and value. Grading involves assessing and quantifying the diamond's characteristics, such as its color, clarity, cut, and carat weight. These factors are commonly known as the "Four Cs" of diamond grading. Pro Tip: Since the grading of a diamond determines its value, it is very important to purchase a diamond with an independent grading report from an American grading laboratory, such as the GIA or other reputable organizations such as GCal and IGI.
Fancy
Fancy Color diamonds can come in a wide range of colors, including shades of yellow, brown, pink, blue, green, orange, and even rare colors like red and violet. Fancy Color diamonds are graded on a separate color grading scale from colorless diamonds D to Z. The grading system for Fancy Color diamonds includes nine categories: Fancy Light, Fancy, Fancy Intense, Fancy Vivid, Fancy Dark, Fancy Deep, Fancy Light Grayish, Fancy Grayish, and Fancy Deep Grayish.
L:W RATIO
The length to width ratio in a diamond refers to the proportionate relationship between the length and width of the diamond's top view. It is a numerical expression that describes the diamond's elongation or compactness. For example, square-shaped diamonds (princess or cushion cuts), with a length to width ratio of around 1.00 to 1.05 indicate a square appearance, while ratios higher than 1.05 start to exhibit a rectangular appearance. The preference for the specific ratio varies based on personal taste, with some individuals favoring longer, slender shapes, and others preferring more balanced or compact proportions.
Table%
The table percentage grading of a diamond refers to the measurement of the table facet (the top flat surface area of the diamond) in relation to the overall diameter of the diamond. The table percentage is considered an important aspect of a diamond's cut quality and can impact its visual appearance. The ideal table percentage can vary depending on the diamond shape, as different shapes have different optimal proportions.
Fluorescence
Diamond fluorescence refers to the visible glow or emission of light that some diamonds exhibit when exposed to ultraviolet (UV) light. This phenomenon is a result of certain trace elements present in the diamond's crystal structure, such as nitrogen. When these elements interact with UV light, they can cause the diamond to emit a visible fluorescence. The intensity of diamond fluorescence is typically described on a scale ranging from None to Very Strong.
Polish
The polish grading of a diamond refers to the assessment of the quality of its surface finish or polish. It evaluates how well the diamond's facets have been polished to create a smooth and reflective surface. The polish grade is an important factor in determining the overall appearance and beauty of a diamond.
Symmetry
The symmetry of a diamond refers to the precision and quality of its cut and the alignment of its facets. It assesses how well the various facets of a diamond are shaped, positioned, and aligned in relation to one another. Symmetry plays a crucial role in the overall appearance, brilliance, and fire of a diamond.
Depth%
The depth percentage of a diamond refers to the measurement of the diamond's depth in relation to its overall diameter. It is expressed as a percentage and helps evaluate the proportions of the diamond. It plays a role in how light interacts with the diamond, affecting its brilliance, fire, and overall sparkle. Different diamond shapes and cutting styles have different optimal depth percentage ranges. For example, it is normal for a Cushion Shape diamond to have more depth than a Round Shape diamond.
Quality
Do you prioritize the diamond's quality or size first? Let us help you find the perfect diamond by selecting what is most important to you.
Superior Quality: D-F Color, IF-VVS2 Clarity, and Ideal Cut lab grown diamonds are considered superior quality.
Bigger Diamond: If you prefer a larger carat weight, this selection will filter larger diamond sizes within your carat weight range with the best price points.
MiaDonna diamonds are the highest quality, most ethical, American-grown diamonds in the industry.
Every ring is handcrafted to order in America. Your ring will always be unique to you and your preferences.
We insure and register every order and offer free 2-day shipping within the continental U.S.
10% of net profits from every purchase go to our foundation to support people and the planet.
MiaDonna diamonds are the highest quality, most ethical, American-grown diamonds in the industry.
Every ring is handcrafted to order in America. Your ring will always be unique to you and your preferences.
We insure and register every order and offer free 2-day shipping within the continental U.S.
10% of net profits from every purchase go to our foundation to support people and the planet.
EASY 30-DAY RETURNS
FREE* RESIZING
TRANSPARENT FINANCING OPTIONS
LIFETIME GUARANTEE
B CORP CERTIFIED
To ensure the highest quality, all of our jewelry is handcrafted and made to order to your specifications, aside from ready-to-ship items. Once your order is received and processed,
it will take 10-15 business days to craft the jewelry. Once completed, your order ships domestically via UPS 2-Day Air or internationally in approximately 5 to 7 days, depending on the destination country.
Ready-to-Ship items are pre-crafted and will ship the same business day with free 2-day shipping (domestic) if ordered before 11:00 am PST,
Monday through Friday. Rings needing to be resized will require two days of additional processing time. Next-day shipping is available upon request for an additional charge.
Loose Stones ship in approximately 5 business days from order.
Learn more about our metal options to determine which choice is right for you.
We ship domestically to all 50 States in the U.S. and Internationally to over 30 countries around the world. We commonly ship to Canada, UK, France, Germany, Switzerland, Italy, Australia, New Zealand and many others. Click here for a full list of shipping destinations.
Every order shipping within the USA automatically qualifies for free highly-insured, signature-required UPS 2-Day Air shipping. International orders are shipped via highly-insured,
signature-required via FedEx International Priority shipping. International recipients are responsible for paying the Duty and Customs charges that may be applied at entry into your country.
Please contact your local Customs Department with questions about additional fees and processes regarding your order from MiaDonna.
Below is a breakdown of the shipping options and rates you'll be provided upon checkout.
Shipping Rates :
- United States: Free*
- Hawaii, Alaska & Puerto Rico: $40.00USD
- APO/FPO: $50.00USD
- Canada: $100.00USD
- International & Guam: $150.00USD
- Overnight Shipping Upgrade (USA): $40.00USD
- Overnight Shipping, Saturday Delivery: $70.00USD
** Delivery Signature Required for all deliveries except APO/FPO
** Domestic USA shipping is included unless stated
** We only ship Monday through Thursday for Priority Overnight shipping. However, Saturday delivery is available upon request for $70.00USD when shipping out on a Friday.
At MiaDonna, we pride ourselves on providing a unique shopping experience, from the moment you're introduced to our brand to the first time you put on your jewelry.
Your jewelry will be delivered to you with the following items included:
- Gift Bag
- Vegan leather jewelry box
- Non-toxic jewelry cleaner (Polishing cloths for international guests)
- Certified grading certificate *if applicable
- Copy of your order receipt and welcome information
Credit Cards: Visa, Master Card, American Express, Discover.
Accounts: Amazon, PayPal, Apple Pay.
We also offer financing options, which you can
learn about here.
Customer satisfaction is a core value at MiaDonna, which is why we offer an easy 30-day return policy.
If you are not 100% satisfied with your order, you can return or exchange it in its original condition within 30 days of the date of delivery refund or exchange. Please note the following items cannot be returned:
1. Custom Jewelry
2. Sale items
3. Any item(s) with custom engraving
You must request your return authorization AND ship your jewelry back to us within this 30-day return period in NEW, UNWORN condition with:
1. The return policy tag still attached & untampered with
2. Original invoice and packaging
We do not refund shipping, appraisal costs, or grading cards, and the customer is responsible for the shipping cost to return the product. However, we will refund you the purchase amount minus the original shipping fee.
Only one return/exchange is allowed per customer as we must limit overhead costs to protect our foundation's funding.
View return policy here.
All online credit card transactions with MiaDonna.com are secure.
We do not store credit card numbers.
We use a 128-bit encryption Secure Socket Layering (SSL), industry-standard encryption technology that ensures safe Internet transmission of your personal information.
You may also purchase online merchandise by calling us at 503-336-1581 during store hours.
If you realize you made a mistake on your order, please contact us as soon as possible at 503-336-1581 or email info@miadonna.com to discuss your options. Please have your order number ready.
We offer a variety of excellent online financing services through our partners:
1) BreadPay allows you to finance your purchase over 3, 12 or 24 months. Bread does not require a hard credit check for approval and will not impact your credit score. Click here to see your rate and learn more about our financing option.
2) ShopPay Installments lets you split your purchase into four equal installments for purchases between $50 - $3,000 USD.
3) If your credit history has a few blemishes, Acima Leasing offers financing options worth looking into.
All available at checkout.
Yes! We have a retail store located opposite Washington Square Mall in Portland, Oregon. Stop in and enjoy a glass of wine or a beer while shopping. Our non-commissioned lab-grown diamond and fine jewelry experts will help you find the best quality diamond at the best price. We encourage you to make an appointment (but appointments are not required) so we can make sure we have what you are looking for in stock and ready to show you. Click here to schedule your private appointment.
We are located in Lincoln Tower 4, opposite the Washington Square Mall. Our address is 10250 SW Greenburg Rd, Suite 125, Portland, OR 97223. Too far away? Try our Home Try On Program.