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Home Alfa Mirage® AMC DIAMOND GAUGE
Alfa Mirage AMC diamond gauge card with millimeter and carat scales on a black background.
Close-up of a diamond being measured for carat weight using the Alfa Mirage precision gauge.
Handheld view of the slim Alfa Mirage diamond gauge being pulled from a leather wallet.
Flat front view of the stainless steel AMC Diamond Gauge showing various gem cut shapes.
Alfa Mirage AMC Diamond Gauge displayed with loose round and princess cut diamonds.
Angled view of the durable stainless steel Alfa Mirage diamond size estimator and ruler.
Alfa Mirage AMC diamond gauge card with millimeter and carat scales on a black background.
Close-up of a diamond being measured for carat weight using the Alfa Mirage precision gauge.
Handheld view of the slim Alfa Mirage diamond gauge being pulled from a leather wallet.
Flat front view of the stainless steel AMC Diamond Gauge showing various gem cut shapes.
Alfa Mirage AMC Diamond Gauge displayed with loose round and princess cut diamonds.
Angled view of the durable stainless steel Alfa Mirage diamond size estimator and ruler.
Alfa MirageSKU: MCEB00281

Alfa Mirage® AMC DIAMOND GAUGE

$21.67 /
Shipping calculated at checkout.
Alfa Mirage AMC diamond gauge card with millimeter and carat scales on a black background.
Alfa Mirage® AMC DIAMOND GAUGE
$21.67 /
Low Stock (5)

Brand: Alfa Mirage

Place of origin: Made in Japan

Product name: Diamond Gauge

Item code: 203-090

Model: DG-03

Measuring Range: Round Brilliant 0.01 – 3.0 ct (19 types). Pear Shaped, Oval, Emerald and Square 0.25 – 1.0 ct (4 types)

Ruler: 0-80mm

Material: Stainless Steel

Size: 85 x 54 x 0.3mm

Accessory: Plastic card case

 
 
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Related categories
Jewelry measuring tools: ring sizers, calipers, micrometers, and assorted diamond jewelry.Calipers & Gauges jeweler-desk-flatlay-digital-caliper-presidium-gem-tester-magnifying-loupe-diamond-ring-and-earrings-for-appraisalTools & Supplies
AMC DIAMOND GAUGE
This handy gauge enables you to estimate the carat of various shapes of
diamonds from its diameter and shape. It works for Round Brilliant 0.01-3.0ct
(19 types) stones as well as Pear Shaped, Oval, Emerald and Square 0.25-1.0ct
(4 types). Card sized gauge fifits in every wallet, card holder and easy to carry
out. Very useful for carat estimation, business and buying diamonds.
Item Code
203-090
Model
DG-03
Measuring Range
Round Brilliant 0.01 - 3.0 ct (19 types)
Pear Shaped, Oval, Emerald and Square 0.25 - 1.0 ct (4 types)
Ruler
0 - 80 mm
Material
Stainless Steel
Dimensions
85 x 54 x 0.3 mm (card size)
Accessory
Plastic card case
Made in Japan

Your secret weapon for buying diamonds on the go. Ever found a stunning vintage ring at an estate sale and wondered if the seller is exaggerating the carat size? Bring your own appraiser right in your pocket. The Alfa Mirage® AMC Diamond Gauge is a brilliant, credit-card-sized stainless steel template that lets you instantly estimate the carat weight of a mounted diamond just by laying it over the stone. Made in Japan, this indestructible little tool is the ultimate "cheat sheet" for jewelry lovers, bargain hunters, and soon-to-be-engaged couples.

Why You’ll Love It

  • Fits in Your Wallet: Measuring exactly the size of a standard credit card (and only 0.3mm thick), it slips perfectly into any wallet or cardholder. You will never be caught without a measuring tool again.

  • Instant Visual Estimation: No math, no un-setting stones, and no batteries. Simply hold the cutouts over a mounted diamond to instantly match its diameter to its exact carat weight and millimeter size.

  • Not Just for Round Diamonds: Unlike basic gauges, this premium tool covers 19 sizes of Round Brilliant cuts (from a tiny 0.01ct up to a massive 3.0ct), PLUS four fancy shapes: Pear, Oval, Emerald, and Square (0.25 to 1.0ct).

  • Indestructible Japanese Steel: Crafted from strong, corrosion-resistant stainless steel. It will never bend, snap, or wear out like cheap plastic measuring templates.

  • Bonus Built-in Ruler: Features a highly precise 0-80mm ruler along the top edge for quick measurements of ring bands, chains, and other small items.


Estate Sale & Flea Market Hunters: The ultimate stealth tool. Verify a seller's carat claims quickly and discreetly before you negotiate a price.

Couples Ring Shopping: Trying to decide between a 1-carat and a 1.5-carat diamond? Use this gauge at home to perfectly visualize exactly how big different carat weights will look on your finger before buying online.

Jewelry Hobbyists & Thrifters: A low-cost, high-value tool for sorting through unlabelled vintage jewelry to identify the rough value of gemstone finds.

Free Global Shipping
We process orders within 1-3 business days. Estimated standard international delivery is 6-12 business days.

14-Day Returns
We have a 14-day return policy. Items must be unused, with all original accessories, and in original packaging.

For full details, please refer to our Shipping and Refund policies at the bottom of the page.


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Your long-term partner in jewelry making. We test and source the best global tools, so you can focus on creating.

Email: sales@luxgoldtools.com

Head Office: Room 1101, 11/F, Yuntong Commercial Building, 46-48 Hillwood Road, Tsim Sha Tsui, Hong Kong

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