Is it very white not off white

hydrostone is mostly very white. it can be off white depending on several factors including batch variation, water impurities when mixing, and others. it is usually very white.

What is the density of the powder?

108 lbs/cu. ft dry, 119 lbs/cu ft wet. The 50lb bag of powder is about 24"x16"x7". So that's approximately 1.5cu ft. 50/1.5 gets you about 33 and a 1/3. Right around there. I don't know the exact dimensions of the bag, yo.

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Hydro-Stone Plaster for Scenery, Dioramas, Dentistry and Mold Casting, Also Great for Model Railroads & Gaming (25 lb)

Product ID: 731422309

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Details

Brand
Laguna
Item dimensions L x W x H
13 x 10 x 3
Item Form
Bag
Grade Rating
Commercial
Number of Items
1

💪40-50% harder than standard plaster

⏱️Quick setting time

⚖️Lightweight yet ultra-dense

Description

🎨 Sculpt your vision with Hydro-Stone — where detail meets durability!

COLOR READY - Accepts liquid and crystal pigments for custom finishes
PRECISION PERFECT - Captures intricate details for flawless dioramas and models
VERSATILE CASTING - Ideal for scenery, dentistry, mold making, and gaming miniatures
SPEED MEETS STRENGTH - Fast-setting formula that doesn’t compromise durability
RESEALABLE RELIABLE - Water-resistant packaging keeps plaster fresh and ready

Hydro-Stone Plaster is a premium, quick-setting gypsum plaster designed for ultra-hard, detailed castings. It is 40-50% harder than typical casting plasters, lightweight, and water-resistant when stored properly. Perfect for professional dioramas, dental molds, model railroads, and gaming miniatures, it accepts pigments for customized finishes but is not suited for outdoor use or mother molds.

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TrustScore 4.5 | 7,300+ reviews

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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Manufacturer	USG
Item part number	Hydrostone
ASIN	B084MB96TN

Hydro-Stone Plaster for Scenery, Dioramas, Dentistry and Mold Casting, Also Great for Model Railroads & Gaming (25 lb)

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