Mikado Diamonds Review 2026: Pricing, Pros & Cons

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What it is: Natural and lab-grown loose diamonds, engagement rings and wedding bands
Best for: Ring shoppers comparing natural and lab-grown diamonds online
Price: Loose diamonds from about $370; 1 ct lab-grown $820, checked October 30, 2026
Prices checked: October 30, 2026

We researched Mikado Diamonds's official pricing, terms, product pages, help pages and outside reviews. We haven't used Mikado Diamonds ourselves, so this is a research-based review, not a hands-on test.

Who it’s best for

Couples shopping for an engagement ring online.
Buyers comparing lab-grown and natural stones by price.
Shoppers who want a grading report with the stone.

Who should skip it

Probably not the best fit if you want to see the ring in a showroom first.

How it works day to day

This part draws on Mikado Diamonds’s own product pages, help center and documentation, read October 30, 2026 (listed under Sources). We haven’t used Mikado Diamonds ourselves.

You filter loose diamonds by cut, color, clarity and price, pick a setting, and check the grading report before checkout.

Key features in use

Loose natural diamonds
Lab-grown diamonds
Engagement ring settings
Wedding bands
Grading reports
Financing

Setup and learning curve

No account needed beyond checkout; you can track the order by email.

Integrations

Standard online checkout with financing options.

Support

Phone and text support listed on the site; FAQ and ring education pages.

Real-world use cases

Engagement rings
Wedding bands
Anniversary gifts
Upgrading a stone

What it costs

Prices checked October 30, 2026, from Mikado Diamonds’s own pricing page unless noted. Prices change often, so check the official page before you buy.

Loose diamonds from about $370; a 1.03 ct D/FL round lab-grown diamond at $820; 1.00 ct G/SI2 natural rounds about $2,480 to $2,950; a 1.50 ct E/VS2 natural round at $10,930; the top of the catalog runs to about $77,700 (official store, checked October 30, 2026).
A sitewide sale on lab-grown diamonds and settings was running, with the discount applied at checkout.

What we like

Large loose diamond catalog with both natural and lab-grown stones.
Lifetime warranty page and jewelry insurance info on the site.
Grading reports come with certified stones.
Financing options listed.

What to watch for

Trustpilot showed 3.7 out of 5 from 1 review (very few reviews) as of October 30, 2026.
Custom-made rings and men's wedding bands cannot be returned.
Orders on layaway or Affirm financing carry a 10% restocking fee on return.
The return window counts from the ship date, not delivery.

The fine print

Returns must be unworn, in original condition, with the grading report.
No returns after 30 days from shipping.
Lost or damaged jewelry in your possession is not covered; get insurance.

The main alternative: Brilliant Earth

Brilliant Earth is a large, well-known online jeweler with showrooms where you can see rings in person.

What it costs: 1-ct lab-grown solitaire from about $1,590, checked October 29, 2026

Pick Mikado DiamondsChecked by Vetteroo if you…

want a big loose-diamond search.
are price-shopping lab-grown stones.
are fine buying online only.

Pick Brilliant Earth if you…

want to visit a showroom.
want a bigger brand.
want more design choices.

Our take

Mikado Diamonds has a large natural and lab-grown diamond catalog at competitive prices, but outside reviews are almost nonexistent and custom rings cannot be returned, so lock in the details before you order.

Side by side

Company	Best for	Starting price	Trial / refund
Mikado Diamonds Checked by Vetteroo	Ring shoppers comparing natural and lab-grown diamonds online	Loose diamonds from about $370; 1 ct lab-grown $820, checked October 30, 2026	Returns within 30 days of shipping; custom rings excluded
Brilliant Earth	Couples who want showrooms and a wide ring catalog	1-ct lab-grown solitaire from about $1,590, checked October 29, 2026	Free 30-day returns on unworn, unmodified items

From our company records. Check the official pages for current prices.

What we checked

Mikado Diamonds's pricing, product pages and terms, read October 30, 2026
Mikado Diamonds's Trustpilot profile, read October 30, 2026
Brilliant Earth's details: read on its official pages on October 30, 2026 (comparison only; not reviewed)
The other official and outside pages listed under Sources (links checked October 30, 2026)

Sources

Visit Mikado Diamonds’s official site

How we review

We read the company's own terms, test the sign-up or booking steps where we can, and compare it with alternatives. A commission never changes what we write. Read our disclosure.