• Skip to main content
  • Skip to primary sidebar

How to Shop for a Diamond

Saving you hundreds or thousands by finding you better diamonds.

  • Contact Me
You are here: Home / Jewelry Recommendations / Are These Costco Diamonds Worth It? / Is this Costco diamond worth it? Square Emerald Cut 1.70 ct VVS2 Clarity F Color Diamond Platinum Solitaire Ring

admin / November 9, 2020

Is this Costco diamond worth it? Square Emerald Cut 1.70 ct VVS2 Clarity F Color Diamond Platinum Solitaire Ring

I check Costco prices and quality of diamond rings against the price and quality of other highly reputable online jewelers.

I compare by the data and the specs.

Today’s Costco diamond is this Square Emerald Cut 1.70 ct VVS2 Clarity F Color Diamond Platinum Solitaire Ring. (It’s one of a kind, so it could easily have gone out of stock since I mentioned it here. However, you can bet that Costco will have another one just like it in specifications. So this comparison should be useful.

Quick Links to Contents on This Page

  • Bottom line: you’ll save $2,660 on a ring with the same specs at James Allen.
  • Costco’s offer: $14,699.99
  • The specs
  • Now for James Allen’s offer on a ring with identical data and specs: $12,040
  • How to build a ring like this at James Allen, and save $2,660 or more:
  • The one reason, as always, that the Costco ring might be worth the price premium
  • It’s easy to get great deals on better diamond jewelry — for less money! Here’s how:
  • How to search this site to save up to tens of thousands of dollars at trusted diamond retailers, vs most any Costco, Kay, Jared, or Zales ring you’re considering

Bottom line: you’ll save $2,660 on a ring with the same specs at James Allen.

You’ll save $2,660 by buying a diamond ring with the same specs at James Allen.

To see how easy it is to build the ring at James Allen, scroll to that easy section below.

Costco’s offer: $14,699.99

This is Costco’s item number 939083.

The specs

GIA diamond certificate

It has a GIA diamond certificate. This is a necessity for any expensive diamond. Never buy one without a grading report from the GIA, AGS, or IGI. Of course James Allen will have such a grading report too. But it’s nice to see that the big box store, Costco, is meeting this must-have, minimum requirement.

Shape

It’s a “square emerald,” or also known as “Asscher” cut. This cut emphasizes depth and transparence. So the clarity of the diamond is especially important in this cut. As is the color.

(Also important: where are any of the inclusions (flaws) located within the diamond?) You’ll need to check out the GIA report on it here.

Carats

This diamond weighs 1.7 carats.

Clarity is VVS2

That’s a high clarity score. Important for this cut, as already mentioned.

Color is F

That’s a high grade in color. That’s important with this cut, especially. (Remember, there are no A, B, or C color grades. The best possible color, perfect, is graded as a D.)

The setting (the ring itself) is Platinum

Platinum is … awesome.

Now for James Allen’s offer on a ring with identical data and specs: $12,040

That’s $2,660 less than Costco’s offer.

To get a very similar deal, scroll down to “How to Build a Ring Like this at James Allen…”

The James Allen offer has all the same specs.

In fact, the specs are slightly better. The James Allen diamond I happened to find weighs 1.77 carats, which is slightly larger than the 1.7 carats of the Costco diamond.

The James Allen offer also has a GIA diamond certificate.

Even better, you can see exactly what your exact diamond looks like, using James Allen’s 3D imaging of virtually every diamond in their inventory.

How to build a ring like this at James Allen, and save $2,660 or more:

  1. Select this setting at James Allen. Add it as the setting you want to then place a diamond on.
  2. Go to the James Allen diamond inventory search tool (so easy to use) and set your filters/sliders as shown in the image below. (The link may already do that for you. But if not, then just do it manually.

Then it’s easy! You just add a diamond that you like.

And when you get ready to check out, you’ll see that you have a ring that saves a ton of money.

It has the same specs and data as the Costco ring. But you’re saving a lot of cash.

The one reason, as always, that the Costco ring might be worth the price premium

If you’re in a huge hurry to get the ring, then Costco can get it to you faster. That’s because James Allen custom creates your ring. Costco’s rings are sitting in a warehouse. Ready to ship.

Enjoy your shopping! You can totally get a ring you love at a price you can afford.

It’s easy to get great deals on better diamond jewelry — for less money! Here’s how:

  1. Scroll up to the section on “How to Get the James Allen Deals.”
  2. Follow the easy directions there.
  3. Feel 100% confident that you bought the best diamond for the money

How to search this site to save up to tens of thousands of dollars at trusted diamond retailers, vs most any Costco, Kay, Jared, or Zales ring you’re considering

Search and save. You could save enough for a new compact car. Or a honeymoon. Or several expensive dinner dates. Or that guitar you’ve been wanting.

Read this very short note on how easy it is.

Primary Sidebar

Search

Recent Posts

  • Daily Diamond Deal: Don’t buy this $10,000 diamond. Buy a better deal at $4,100!
  • Daily Diamond Deal: 1-Carat for $1,400 vs $4,000
  • Daily Diamond Deal: Save $10K vs a 4-carat diamond ring from Jared
  • How to build a James Allen Ring Studio Diamond Engagement Ring. For MUCH less than you imagine.
  • “How do I know if my SI1 diamond is eye clean?” With live examples.
  • Eye-Clean Diamonds: (The Real) Everything You Need to Know article
  • Examples of eye-clean diamond prices — and mistakes to avoid
  • Helzberg Light Heart Diamonds Review with ring-by-ring price comparisons and alternatives to save $1,000s
  • Review: Helzberg Radiant Star diamond rings w/ certified, better alternatives
  • Helzberg “Radiant Star” Diamonds: 145 facets don’t mean more brilliance. Here’s why.
  • Why to select your own diamond for a pendant: You get a better diamond. For less money. Here’s proof.
  • Helzberg $6,000 Signature Diamond Engagement Ring Review: Bad deal! Get a $2,630 certified, better alternative instead.
  • 10 Ways to Afford the Diamond You Want
  • 5 Ways to Get Your Boyfriend or Husband to Buy You a Bigger, Better Diamond — for much less than expected.
  • Don’t buy this 3-carat diamond engagement ring at Jared for $24K. Get a GIA-certified, better one at James Allen for only $16K (or an even better one for $10K).
  • Don’t buy this Neil Lane diamond engagement ring at Jared for $22K. Get a GIA-certified, better one at James Allen for about $14K (or less, at about $9K).
  • J.R. Dunn offers this Verragio Round Diamond Halo Engagement Ring (Setting Only) for $5,300. Is it worth it?
  • J.R. Dunn offered a 3-carat Henri Daussi Halo Pavé Diamond Ring for $29,500. I found an almost identical ring for $16,580.
  • Anna Sheffield offered a 1.2-carat Emerald Cut Solitaire Pavé diamond ring for $11,750. I found a GIA-certified, better alternative for $7,620 (saving $4,130).
  • Cartier offered a tiny Emerald Cut Solitaire Pavé diamond ring for $3,100. I found an alternative for $1,505.
  • Catbird offered a 3-stone pavé white gold engagement ring for $4,700. I found a better, less expensive alternative for $3,012.
  • White Gold Diamond Engagement Rings I Love (And how to get better diamonds for up to 65% off.)
  • Helzberg’s “Radiant Star” Diamond Review: Is it worth it? Head to head price and specs comparison.
  • “Should I buy a lab-created engagement diamond ring?” Sure, but not if it’s this overpriced $14,999 Oval cut “on sale” at Helzberg. Get a certified, much better one for $11,127 ($3,772 less!)
  • Do NOT buy this beautiful Helzberg 3-carat diamond engagement ring “on sale” for $14,999. Instead get this BETTER one for $12,427. (Saving $2,572.)
  • Zales offers an engagement ring in the style of Princess Diana’s / Kate Middleton’s. It’s not bad and here’s why.
  • Helzberg offered a 1-carat Pear-shaped diamond engagement ring “on sale” for $3,299. Blogger finds brilliant way to get better one for $1,660
  • Helzberg offers a 1/2-carat diamond necklace “on sale” for $1,000. Blogger reveals a brilliant way to get a certified, MUCH better one for $310 less.
  • Is this 2-TOTAL-carat weight Pear shaped diamond engagement ring from Kay a smart buy at $3,300? No! When shoppers look more closely, they’re glad they passed. Here’s a much better, certified-diamond option for as low as $2,810
  • Is this 1-carat Marquise diamond engagement ring in a Black Friday “sale” at Zales a true deal at $3,000? No. How to get a certified, better diamond ring for $2,335.
  • Is this 1-carat princess cut diamond ring on sale at Zales for $3,000 (25% off) a good deal? No. You can get a certified, better diamond ring for as low as $1,845. No coupon needed. Here’s how.
  • Is this 2-carat diamond on sale for $9,000 at Zales a good buy? Is it too much? Hint: You can get a certified, objectively better diamond for around $5,000. I show you how.
  • Is this 1-carat oval diamond at Zales worth the “on sale” price of $3,000? No. Still overpriced. Get a certified, objectively better diamond for $1,565 instead.
  • Is this Neil Lane Premiere 2-total carat weight Pear-shaped Diamond Engagement Ring worth it, even on sale at $12,750? No. You can get a certified, better, bigger diamond ring for $4,960.
  • How much is this 2-1/8 diamond ring at Kay? An overpriced $11,250, even on sale. You can get a certified, objectively better diamond ring for $5,305. Screenshots are here.
  • Is this 3-carat diamond at Kay worth it “marked down” for $18,000? No way. Here’s how to get an objectively (certified) MUCH better 3-carat diamond ring for $13,000.
  • Looking for a coupon for Jared’s 1-3/4 total carat weight $16,000 Royal Asscher Tatiana Diamond Engagement Ring? This is better than a coupon: Certified better quality diamond for thousands less.
  • Is this 3/4-carat Princess Cut diamond solitaire engagement ring from Jared a good deal for $2,200? No. Instead get a certified, better diamond ring in this style for as low as $1,525.
  • Should you buy this 2-1/2-carat Princess cut diamond solitaire engagement ring from Jared for $15,000? No. You should buy a GIA- or IGI-certified BETTER diamond ring for as low as $7,215 (Yes, really.) Here’s how.
  • Is this 3/4-carat oval diamond solitaire engagement ring from Jared a good deal for $2,200? Sorry, no. You can get a certified better diamond ring for as low as $1,265. Here’s how.
  • Is this 1-1/2-tcw “Princess Cut” Diamond Engagement Ring from Jared for $2,800 a good buy? No. Did you notice it has no center diamond? Get a much better, similar ring for $2,655.
  • Are these 1-tcw Lab-Created Diamond Solitaire Earrings in 14K White Gold at Jared a good deal on sale at $999? A surprise twist.
  • Is this 3/4-carat oval diamond solitaire engagement ring from Jared a smart buy for $5,000? Not at all. You can get a certified better diamond ring for as low as $1,040. Here’s how.
  • Is this $1,605 IGI-Certified 1-Carat diamond engagement ring actually better than a Jared 1-Carat ring costing $3,499.99? You bet. I prove it here.
  • Is this 1-carat diamond solitaire engagement ring from Jared a smart buy at $7,000? No. You can get the same quality or better ring for MUCH less.
  • Is this 2-carat diamond solitaire engagement ring from Jared a good deal at $20,000? No! Here’s how to get the same quality or better ring for FAR less.
  • Is this 1-1/2-carat diamond solitaire engagement ring from Jared a good deal at $12,000? No. Here’s how to get the same quality or better ring for much less.
  • Is this Diamond Solitaire 1/2 carat Princess-cut 14K White Gold Engagement Ring from Jared for $1,300 a good deal? No. Here’s how to get a better diamond ring for less.
  • Is this 1-carat oval cut solitaire diamond engagement ring at Kay a good deal on sale at $4,770?
  • Is this 1-1/8 ct tw 14K White Gold Diamond Engagement Ring from Kay Jewelers a good deal at $4,875? I think not. You can get very similar for MUCH less. Here’s how.
  • Is this 1-3/8 ct tw 14K White Gold Emerald-Cut Diamond Engagement Ring from Kay a good deal on sale at $4,875? No way! You can get one for $3,122 (earth-mined) or an even better one for $2,353 (lab-created).
  • Is this Neil Lane Premiere Oval Diamond Engagement Ring (1-3/8 ctw 14K White Gold) at Kay Jewelers a good deal at $4,875? I think not. Here are two alternative, better rings for less.
  • Is this 1 ctw Diamond Engagement Ring at Kay Jewelers worth it at $2,475? Sorry but nope. You can get one for $2,200 (save $275). Here’s how.
  • Is this Kay Jewelers pear-shaped 1 ctw diamond pave ring a good deal “on sale” for $2,625? Get one for $1,990 (earth-mined) or $1,850 (lab-created).
  • Is this “Certified” Diamond Solitaire 1-Carat Cushion-cut 14K White Gold engagement ring at Kay Jewelers a good buy on “Clearance” at $3,539? Nope. Get one for $1,720 (earth-mined) or $1,560 (lab-created).
  • Is this Jared offer on a 1-carat princess cut diamond engagement ring for $3,400 worth it? No. Buy this better ring for less.
  • Is this classic, GIA-certified 2-carat diamond 6-prong solitaire ring a smart buy at Costco for $18,000? Here’s how to get one for $13,100.
  • Is this massive 3.57 carat total weight platinum ring from Costco worth the price of $58,000? Hint: you can get one for less.
  • Should you buy this Costco Round Brilliant 3-Stone 1.20 ctw Diamond Engagement Ring for $2,400? Or is there a huge risk?
  • Is this 1.7 total carat weight halo diamond ring worth buying at Costco for $7,000? You can get one for less.

Copyright © 2025 We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. Also of course any link here could be an affiliate link. It's how web publishers large and small stay in business. It only means that should you happen to buy something at a site we link to, we might be rewarded by a payment from the retailer, at no cost to you.

Note that we make every effort to make all content as accurate as possible. And mostly succeed. But every human makes mistakes, so be sure to confirm all specifications and all information about any diamond you buy, and about any competitors' offers, directly with the sellers, before you buy.

  • Contact Me
Facebook
Facebook
fb-share-icon
Twitter
Post on X