how do you calibrate it?

Calibration is not needed as far as I know

Placing on diamonds and having no response, what does that mean?

I have used this unit and had the same response on known diamonds. Sometimes the stone is dirty and needs a cleaning. This can throw off results. Also, my unit is getting returned when I have a suitable replacement. It sometimes takes 3 or more tries to get it to register. Clean the stone and try touching it with a firm but not point grinding pressure a few times and if it doesn't work try another tester. Assuming of course you know the diamond is real.

How can I get a replacement tip?

You can get it replaced from manufacturer, fill out the return form.

プレシジウムマルチテスターii

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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COP 1951967

Duties & taxes included

In stock

Sold byAmazon ColombiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Colombia.

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Description

💎 Unlock the secret life of gems with precision and style!

MULTI GEM VERSATILITY - Accurately tests diamonds, moissanites, cubic zirconia, sapphires, and more
ULTRA THIN 0 6 MM PROBE TIP - Industry’s slimmest for accurate testing on stones as small as 0.02 CT
ERGONOMIC DESIGN WITH NON SLIP GRIP - Comfort meets control for reliable readings every time
PRECISION DIAMOND MOISSANITE DETECTION - World’s first single instrument optimized for both gems
RETRACTABLE PROBE FOR CONSISTENT PRESSURE - Ensures trustworthy, repeatable test results

The プレシジウムマルチテスターII (PMuT III) is a cutting-edge, ergonomic multi-tester designed in Singapore for precise identification of diamonds, moissanites, and other diamond simulants. Featuring the industry’s thinnest 0.6mm retractable probe tip, it delivers reliable results on stones as small as 0.02 CT. Its all-in-one display and non-slip grip make gem testing effortless and accurate, perfect for professionals demanding trusted performance.

Specifications

ASIN	B004QYR8U6
Amazon 売れ筋ランキング	産業・研究開発用品 - 369,844位 ( 産業・研究開発用品の売れ筋ランキングを見る ) テスター - 4,322位
Amazon.co.jp での取り扱い開始日	2010/3/19
おすすめ度	3.7 5つ星のうち3.7 (360) var
ブランド名	PRESIDIUM
原産国	シンガポール共和国
商品重量	97 グラム
型番	PMuT III
梱包サイズ	20 x 12.6 x 6.4 cm
梱包重量	0.17 キログラム
色	ブラック
電池付属	いいえ
電池使用	いいえ
電源	バッテリー

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COP 1951967

Duties & taxes included

In stock

Sold byAmazon ColombiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Colombia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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