Name: LEGO Harry Potter Philosopher's Stone Hogwarts Wizard's Chess
Brand: LEGO
SKU: 76392-1
Availability: InStock
Rating: 4.80 (30 reviews)

LEGO 76392 Hogwarts Wizard's Chess is a Harry Potter set valued at $120 for new and sealed sets, up 100% from an original retail price of $59.99. The set retired in December 2022 with annual appreciation averaging 21.65% since. On the used market, values range from $52 to $88 based on condition. Secondary market prices for new and sealed sets typically fall between $120 and $139.

Set Value (New/Sealed)

This chart represents the current new/sealed value of the set Hogwarts Wizard's Chess since December 2022. Very high accuracy

LEGO 76392 Hogwarts Wizard’s Chess is a Harry Potter set released in 2021, containing 876 pieces and four minifigures. The set recreates the enchanted chessboard scene from Harry Potter and the Sorcerer’s Stone, featuring a buildable chess set with fully playable black and white pieces. It includes minifigures of Harry Potter, Hermione Granger, Ron Weasley, and a collectible golden Professor Severus Snape, along with three printed wizard card tiles.

A new and sealed Hogwarts Wizard's Chess is currently valued at around $120, with annual growth of about 14.5% that is expected to level off to around 11.1% in the coming year. The average used price is $73 for those in good overall condition. Based on current trends, this set could be valued near $127 within the next year. The 4 included minifigs account for approximately 50% of the set's total value. The set was available for 18 months, from June 2021 to December 2022.

For Sale (New/Sealed)

	(US) Premium listing for Hogwarts Wizard's Chess	BrickEconomy Choice $70.00
	(US) Harry Potter Hogwarts Wizards Chess 76392 Set 20th Anniversary Sealed New	$104.99 -12.5%
	(US) New LEGO 76392 Harry Potter Hogwarts Wizards Chess - Factory Sealed	$109.95 -8.4%
	(US) NEW LEGO Harry Potter: Hogwarts Wizard's Chess set (76392)	$109.99 -8.3%
	(US) Harry Potter: Hogwarts Wizard's Chess (76392)	$110.00 -8.3%
	(US) HARRY POTTER HOGWARTS WIZARD'S CHESS 876 PCS 76392 NEW IN BOX 2021 RETIRED	$113.60 -5.3%
	(US) Nice condition	$114.00 -5.0%
	(CA) MISB	$114.38 -4.7%
	(US) HARRY POTTER 76392 Hogwarts Wizards Chess NISB New, Sealed, Retired Set	$115.00 -4.2%
	(US) Hogwarts Wizards Chess NEW Sealed Retired Harry Potter 76392	$115.00 -4.2%
	(US) Harry Potter: Hogwarts Wizard's Chess (76392) New Sealed	$115.00 -4.2%
	(US) New/ Sealed Ask for photos	$115.00 -4.2%
	(US) Harry Potter Hogwarts Wizard's Chess Set 76392 - 100% Verified Authentic and New	$119.00 -0.8%
	(AU) BrickLink store Steves Brick Yard	$119.60 -0.3%
	(US) Harry Potter: Hogwarts Wizard's Chess (76392) NEW	$119.88 -0.1%
	(US) Harry Potter: Hogwarts Wizard's Chess (76392) New in Box	$119.95 0.0%
	(US) NEW, sealed	$119.95 0.0%
	(US) BrickLink store Billy Brick	$119.95 0.0%
	(US) Harry Potter Hogwarts Wizard's Chess 76392 Box 876 Pieces Wizard Cards	$119.98 0.0%
	(US) Harry Potter Hogwarts Wizard's Chess Sealed 76392 Set 876 Pieces Ages 10+	$119.99 0.0%
	(US) Harry Potter: Hogwarts Wizard's Chess (76392) 20 Years Gold Figure	$119.99 0.0%
Show 64 more listings
	(US) Harry Potter: Hogwarts Wizard's Chess (76392) 876 pcs Complete Set 10+	$119.99 0.0%
	(US) Harry Potter Hogwarts Wizard's Chess Set 76392, 876 Pieces, Ages 10+, Boxed	$119.99 0.0%
	(US) Harry Potter Hogwarts Wizard's Chess 76392 Brand New Sealed in Box Retired	$120.00
	(US) Harry Potter: Hogwarts Wizard's Chess (76392)	$120.00
	(US) 76392 Hogwarts Wizard's Chess HARRY POTTER Brand Retired Sealed	$120.00
	(US) Harry Potter: Hogwarts Wizard's Chess (76392)	$120.00
	(US) 76392 - Hogwarts Wizards Chess - Harry Potter - New and Sealed	$120.00
	(US) BrickLink store White Funk's Bricks	$120.00
	(KR) BrickLink store brickstoreKR	$120.00
	(UK) BrickLink store the_master_builder92	$121.10 +0.9%
	(US) 76392 Hogwarts Wizard's Chess HARRY POTTER Brand Retired Sealed	$124.95 +4.1%
	(US) Harry Potter Hogwarts Wizard's Chess 876 Pieces 20 YEARS 76392 NEW	$124.99 +4.2%
	(US) Hogwarts Wizard's Chess Lego 76392 Harry Potter The Magic Returns Building Set	$124.99 +4.2%
	(US) Harry Potter: Hogwarts Wizard's Chess (76392)	$124.99 +4.2%
	(US) HARRY POTTER: Hogwarts Wizard's Chess (76392) -- UNOPENED BOX, RETIRED SET	$125.00 +4.2%
	(US) Harry Potter: Hogwarts Wizard's Chess (76392)	$125.00 +4.2%
	(US) Harry Potter Hogwarts Wizard's Chess 76392 Anniversary Professor Snape NEW	$125.00 +4.2%
	(US) Harry Potter: Hogwarts Wizard's Chess (76392)	$125.00 +4.2%
	(US) BrickLink store The Building Block Shop	$125.00 +4.2%
	(AU) BrickLink store BricksConnectAU	$125.22 +4.4%
	(US) Amazon listing for Hogwarts Wizard's Chess	$126.00 +5.0%
	(NL) BrickLink store Bulk	$126.08 +5.1%
	(US) 76392 Hogwarts Wizards Chess Brand New Sealed Box	$129.00 +7.5%
	(US) Harry Potter: Hogwarts Wizard's Chess (76392)	$129.00 +7.5%
	(US) Boxes have shelf ware and creasing.	$129.97 +8.3%
	(US) Harry Potter Hogwarts Wizards Chess Retired Lego Set 76392 New Sealed	$129.99 +8.3%
	(US) 76392 Hogwarts Wizards Chess NEW Sealed Retired Harry Potter 876pc	$129.99 +8.3%
	(US) Harry Potter: Hogwarts Wizard's Chess (76392) New & Sealed	$129.99 +8.3%
	(US) 76392 Harry Potter Hogwarts Wizard Chess Ron Hermione Professor Snape NEW	$129.99 +8.3%
	(US) Harry Potter Hogwarts Wizard's Chess 76392	$129.99 +8.3%
	(US) Harry Potter: Hogwarts Wizard's Chess (76392) Brand New	$129.99 +8.3%
	(US) Harry Potter Hogwarts Wizards Chess 76392 Set 876pcs Age 10+	$129.99 +8.3%
	(US) Harry Potter Hogwarts Wizard's Chess 76392 Complete Set 876 Pieces	$130.00 +8.3%
	(US) Harry Potter Hogwarts Wizard's Chess Set 76392, 876pcs, Sealed	$130.00 +8.3%
	(US) BrickLink store Milwaukee Bricks	$130.00 +8.3%
	(US) Harry Potter 76392 Hogwarts Wizards Chess. BRAND NEW/SEALED/IN HANDS	$130.00 +8.3%
	(US) BrickLink store Doug's Brick Emporium	$135.00 +12.5%
	(US) BrickLink store Great Plains Bricks	$135.00 +12.5%
	(NZ) Great price at the current (1st quarter 2026) market value of: $136.42 US dollars (so...	$136.42 +13.7%
	(CZ) Box quality 9/10 shelf wear - ask for pictures if important for you.	$136.95 +14.1%
	(IT) BrickLink store Milano_brick	$137.65 +14.7%
	(US) Harry Potter Hogwarts Wizards Chess 76392 NEW SEALED BOX NSB	$138.00 +15.0%
	(US) Harry Potter Hogwarts Wizards Chess 76392 NEW SEALED BOX NSB	$138.00 +15.0%
	(NL) MISB. Excellent box.	$138.61 +15.5%
	(FR) BrickLink store Riva Bella Store	$138.80 +15.7%
	(US) Factory sealed. In excellent condition	$139.15 +16.0%
	(FR) BrickLink store Feeling	$139.27 +16.1%
	(US) Factory Sealed - Lego 76392 Hogwarts Wizards Chess Harry Potter [New / Retired]	$140.00 +16.7%
	(NZ) Collectors Quality LEGO	$141.70 +18.1%
	(US) 76392 - Harry Potter - Hogwarts Wizard's Chess - 2021 - NEW & Sealed	$144.44 +20.4%
	(US) Harry Potter: Hogwarts Wizard's Chess (76392)	$145.00 +20.8%
	(US) Harry Potter Hogwarts Wizards Chess 76392 New Sealed	$145.00 +20.8%
	(US) New Retired LEGO Harry Potter #76392 Hogwarts Wizard's Chess 876pcs Knights	$149.99 +25.0%
	(US) LEGO Hogwarts Wizard's Chess 76392 Harry Potter The Magic Returns Set NEW	$149.99 +25.0%
	(US) Harry Potter Hogwarts Wizard's Chess 76392 Complete Set 876 Pieces	$150.00 +25.0%
	(US) Harry Potter: Hogwarts Wizard's Chess (76392) Free Shipping	$150.00 +25.0%
	(US) Harry Potter: Hogwarts Wizards Chess (76392)	$155.00 +29.2%
	(US) HARRY POTTER 76392 Hogwarts Wizards Chess Target Exclusive New Retired Set	$160.50 +33.8%
	(US) 76392 Harry Potter: Hogwarts Wizards Chess New & Sealed	$169.95 +41.6%
	(US) - Harry Potter - 76392 - Hogwarts Wizard's Chess - Factory Sealed - Retired	$169.99 +41.7%
	(US) Harry Potter: Hogwarts Wizard's Chess (76392) New Sealed	$170.00 +41.7%
	(US) NIB & SEALED~LEGO 76392~HARRY POTTER: HOGWARTS WIZARD'S CHESS~EXCLUSIVE FIGURE	$189.95 +58.3%
	(US) Harry Potter: Hogwarts Wizard's Chess (76392)	$195.00 +62.5%
	(US) RETIRED LEGO 20th HARRY POTTER 76392 HOGWARTS WIZARDS CHESS SEALED 36 MINIFIGS	$197.98 +65.0%
	(KR) 76392 Harry Potter Hogwarts Wizard's Chess 876pcs Factory-Sealed	$210.99 +75.8%

Sales Distribution (Last 90 Days)

This chart shows the distribution of sales for the past three months of new/sealed 76392 Hogwarts Wizard's Chess.

Sale Trends

This chart shows the sales trends (number sold) of new/sealed 76392 Hogwarts Wizard's Chess.

Minifigs

Hogwarts Wizard's Chess contains 4 minifigs. All 4 minifigs are exclusive to this set.

hp277

Professor Severus Snape

My Collection

I own this set

I want this set

Set Details

Set number

76392-1

Name

Hogwarts Wizard's Chess

Theme

Harry Potter

Subtheme

Philosopher's Stone

Year

2021

Released

June 2021

Retired

December 2022

Availability

Retired

Pieces

876 (PPP $0.07)

Minifigs

4 (Value $60.14)

(All exclusive)

Set Pricing

Retail price

$59.99

New/Sealed

Value

$120.00

Growth

+100.03%

Annual growth

+21.65%

2025 growth

+3.70%

Future growth

+11.12% (2-3 year outlook)

90-day change

-4.13%

Used

Value

$73.42

Range

$51.57 - $88.11

Quick Buy

eBay

Buy

Lowest price

$104.99

Highest price

$210.99

Amazon

Buy

Price

$126.00

StockX

Buy

Buy/bid price

$116.00

Bricklink

Buy

Lowest price

$103.38 (HK)

Highest price

$139.27

*Listings are for new/sealed sets.

Set Predictions

New/Sealed

Today's value

$120.00

1 year forecast

$127.34+6.12%

5 year forecast

$174.37+45.31%

$169

$179

76392 Hogwarts Wizard's Chess is projected to be valued between $169 - $179 within five years.

Insights

A retail-limited 2021 Harry Potter anniversary release, Hogwarts Wizard's Chess pairs a playable display format with exclusive anniversary minifigure and the named trio, and its short 2021–2022 shelf run has tightened supply while ongoing franchise demand and remake risk both influence long-term prospects.

Set Facts

Harry Potter Hogwarts Wizard’s Chess (76392) set includes Harry Potter, Hermione Granger, Ron Weasley, and a golden Professor Severus Snape minifigure.
The chess set is an authentic recreation of the chess scene from Harry Potter and the Sorcerer's Stone.
The set features 3 random wizard card.
The set was released as part of the LEGO Group’s celebratory range of 20 years of Harry Potter movies.
It was available for pre-order on the LEGO.com site on April 18th, 2021.
The set measures over 3 in. (8 cm) high, 10.5 in. (27 cm) wide and 10.5 in. (27 cm) deep.
Hogwarts Wizard's Chess was designed by LEGO designer Freddy Charters.

Regional Retail Prices (LEGO.com/Store)

United States

$59.99

United Kingdom

£64.99

Canada

$79.99

Europe

€69.99

Australia

$109.99

Barcodes

UPC

673419344869

EAN

5702016971620

Hogwarts Wizard's Chess Reviews

30 reviews

4.8

Collectors

Investors

BrickFanatics

“76392 Hogwarts Wizard’s Chess is based on the memorable scene from Harry Potter and the Philosopher’s Stone, where Ron proves himself to be just as brave as Harry for the very first time, sacrificing himself during a game of life-sized wizard’s chess. With all of the chess... More pieces and the three minifigures, dressed as they were in the films, you can recreate the same scene, or play a perfectly normal game of chess yourself.”

Full review at www.brickfanatics.com

Bleeding Cool

“Harry, Hermione, and Ron are almost at the end of their quest when they must take on a real-life game of Wizard's Chess. The set is 876 pieces and comes with the iconic duo and 32 buildable chess pieces. On top of that, Harry Potter builders will be able to acquire the... More Golden Severus Snap LEGO mini-figure as well as 3 random wizard card tiles.”

Full review at bleedingcool.com

Subtheme Analysis

Harry Potter / Philosopher's Stone

Sets

Years

2001 - 2025

Lifespan

21 mos (this set 18 mos)

Annual growth

+5.58% (this set +21.65%)

This set's annual growth (CAGR) vs. subtheme

Community Stats

Hogwarts Wizard's Chess currently ranks #2 out of the top most owned sets in Harry Potter Philosopher's Stone.

#1Hogwarts Great Hall

#2Hogwarts Wizard's Chess

#3Hogwarts Fluffy Encounter

#4Quidditch Match

#5Hogwarts First Flying Lesson

#6Draco in the Forbidden Forest

#7Hagrid's Hut An Unexpected Visit

#8Hogwarts Express & Hogsmeade Station

About Harry Potter Philosopher's Stone

Harry Potter and the Philosopher's was the first LEGO theme based on Harry Potter and the first of the novels. The sets are based on the movie version rather than the book version. There were 15 set released in all 2001 to 2002

Philosopher's Stone currently consists of 28 sets that as of now has run from 2001 to 2025. As of today, 4709 Hogwarts Castle is the most valuable Philosopher's Stone set with an estimated new/factory sealed value of $399.

Summary

Harry Potter Philosopher's Stone Hogwarts Wizard's Chess set 76392 was released in June 2021, retailing for $60, but has since been retired. New, unopened Hogwarts Wizard's Chess sets are valued at $120, while used sets can be found for $73.

LEGO® Harry Potter™ Hogwarts™ Wizard’s Chess (76392) combines an endlessly enjoyable board game with magical role play for fans of the popular movies.

Authentic chess set from the wizarding world
This fascinating chess set provides young witches and wizards with 2 ways to play and stretch their imaginations. It’s an enchanting introduction to the wonderful game of chess, and it’s an authentic recreation of one of the most memorable scenes in Harry Potter and the Sorcerer's Stone™. Kids are sure to be captivated for hours on end – whether they are enjoying a game of chess or role-playing endless adventures with characters from the magical movies. The set includes Harry Potter, Hermione Granger™ and Ron Weasley™ minifigures to inspire kids’ creative enjoyment. To celebrate 20 years of magic with LEGO Harry Potter, the set also includes an exclusive, golden Professor Severus Snape™ minifigure and 3 random wizard card tiles for kids to collect.

LEGO® Harry Potter™ toys contain...


	76435 Hogwarts Castle The Great Hall Theme / Subtheme Harry Potter / Philosopher's Stone Year 2024 Pieces / Minifigs 1,732 / 11 Availability Retail (Retiring soon) Buy this set at LEGO Amazon eBay StockX	Retail $199.99 Available at retail Retiring soon I own this set I want this set

	76423 Hogwarts Express & Hogsmeade Station Theme / Subtheme Harry Potter / Philosopher's Stone Year 2023 Pieces / Minifigs 1,074 / 8 Availability Retired Buy this set at Amazon eBay StockX	Retail $129.99 Value $119.98 I own this set I want this set

	76428 Hagrid's Hut An Unexpected Visit Theme / Subtheme Harry Potter / Philosopher's Stone Year 2024 Pieces / Minifigs 896 / 7 Availability Retired Buy this set at Amazon eBay StockX	Retail $74.99 Value $75.00 Growth +0.0% I own this set I want this set

	75954 Hogwarts Great Hall Theme / Subtheme Harry Potter / Philosopher's Stone Year 2018 Pieces / Minifigs 878 / 10 Availability Retired Buy this set at Amazon eBay StockX Bricklink	Retail $99.99 Value $114.21 Growth +14.2% Annual growth 5.1% I own this set I want this set

	4709 Hogwarts Castle Theme / Subtheme Harry Potter / Philosopher's Stone Year 2001 Pieces / Minifigs 682 / 9 Availability Retired Buy this set at Amazon eBay	Retail $89.99 Value $399.46 Growth +343.9% Annual growth 5.6% I own this set I want this set

	76447 Hogwarts Castle Flying Lessons Theme / Subtheme Harry Potter / Philosopher's Stone Year 2025 Pieces / Minifigs 651 / 7 Availability Retail (Retiring soon) Buy this set at LEGO Amazon eBay StockX	Retail $79.99 Available at retail Retiring soon I own this set I want this set

	75956 Quidditch Match Theme / Subtheme Harry Potter / Philosopher's Stone Year 2018 Pieces / Minifigs 500 / 6 Availability Retired Buy this set at Amazon eBay StockX Bricklink	Retail $39.99 Value $75.00 Growth +87.5% Annual growth 12.1% I own this set I want this set

	4708 Hogwarts Express Theme / Subtheme Harry Potter / Philosopher's Stone Year 2001 Pieces / Minifigs 410 / 3 Availability Retired Buy this set at Amazon eBay	Retail $49.99 Value $190.33 Growth +280.7% Annual growth 7.1% I own this set I want this set

	76387 Hogwarts Fluffy Encounter Theme / Subtheme Harry Potter / Philosopher's Stone Year 2021 Pieces / Minifigs 397 / 4 Availability Retired Buy this set at Amazon eBay Bricklink	Retail $39.99 Value $75.28 Growth +88.2% Annual growth 19.6% I own this set I want this set

	76426 Hogwarts Castle Boathouse Theme / Subtheme Harry Potter / Philosopher's Stone Year 2024 Pieces / Minifigs 350 / 5 Availability Retired Buy this set at Amazon eBay Bricklink	Retail $37.99 Value $59.52 Growth +56.7% I own this set I want this set

	4707 Hagrid's Hut Theme / Subtheme Harry Potter / Philosopher's Stone Year 2001 Pieces / Minifigs 299 / 2 Availability Retired Buy this set at Amazon eBay Bricklink	Retail $29.99 Value $134.27 Growth +347.7% Annual growth 5.4% I own this set I want this set

	76395 Hogwarts First Flying Lesson Theme / Subtheme Harry Potter / Philosopher's Stone Year 2021 Pieces / Minifigs 263 / 4 Availability Retired Buy this set at Amazon eBay StockX Bricklink	Retail $29.99 Value $34.99 Growth +16.7% Annual growth 6.7% I own this set I want this set

	4714 Gringott's Bank Theme / Subtheme Harry Potter / Philosopher's Stone Year 2002 Pieces / Minifigs 250 / 4 Availability Retired Buy this set at Amazon eBay	Retail $29.99 Value $205.14 Growth +584.0% Annual growth 6.3% I own this set I want this set

	4706 Forbidden Corridor Theme / Subtheme Harry Potter / Philosopher's Stone Year 2001 Pieces / Minifigs 238 / 3 Availability Retired Buy this set at Amazon eBay Bricklink	Retail $29.99 Value $109.44 Growth +264.9% Annual growth 6.2% I own this set I want this set

	76442 Hogwarts Castle Charms Class Theme / Subtheme Harry Potter / Philosopher's Stone Year 2025 Pieces / Minifigs 204 / 3 Availability Retail Buy this set at LEGO Amazon eBay Bricklink	Retail $19.99 Available at retail I own this set I want this set

	4704 The Room of the Winged Keys Theme / Subtheme Harry Potter / Philosopher's Stone Year 2001 Pieces / Minifigs 175 / 3 Availability Retired Buy this set at Amazon eBay	Retail $19.99 Value $100.00 Growth +400.3% Annual growth 6.2% I own this set I want this set

	76432 Forbidden Forest Magical Creatures Theme / Subtheme Harry Potter / Philosopher's Stone Year 2024 Pieces / Minifigs 172 / 2 Availability Retired Buy this set at Amazon eBay Bricklink	Retail $29.99 Value $32.57 Growth +8.6% Annual growth 5.2% I own this set I want this set

	4705 Snape's Class Theme / Subtheme Harry Potter / Philosopher's Stone Year 2001 Pieces / Minifigs 163 / 3 Availability Retired Buy this set at Amazon eBay	Retail $19.99 Value $75.00 Growth +275.2% Annual growth 5.6% I own this set I want this set

	4723 Diagon Alley Shops Theme / Subtheme Harry Potter / Philosopher's Stone Year 2001 Pieces / Minifigs 80 / 1 Availability Retired Buy this set at Amazon eBay	Retail $9.99 Value $106.68 Growth +967.9% Annual growth 7.2% I own this set I want this set

	4721 Hogwarts Classrooms Theme / Subtheme Harry Potter / Philosopher's Stone Year 2001 Pieces / Minifigs 73 / 1 Availability Retired Buy this set at Amazon eBay StockX Bricklink	Retail $9.99 Value $91.96 Growth +820.5% Annual growth 6.6% I own this set I want this set

	4712 Troll on the Loose Theme / Subtheme Harry Potter / Philosopher's Stone Year 2002 Pieces / Minifigs 71 / 2 Availability Retired Buy this set at eBay	Retail $9.99 Value $101.07 Growth +911.7% Annual growth 5.8% I own this set I want this set

	4722 Gryffindor House Theme / Subtheme Harry Potter / Philosopher's Stone Year 2001 Pieces / Minifigs 68 / 1 Availability Retired Buy this set at Amazon eBay	Retail $9.99 Value $70.00 Growth +600.7% Annual growth 6.5% I own this set I want this set

	4702 The Final Challenge Theme / Subtheme Harry Potter / Philosopher's Stone Year 2001 Pieces / Minifigs 60 / 2 Availability Retired Buy this set at Amazon eBay	Retail $9.99 Value $87.63 Growth +777.2% Annual growth 6.9% I own this set I want this set

	4701 Sorting Hat Theme / Subtheme Harry Potter / Philosopher's Stone Year 2001 Pieces / Minifigs 48 / 1 Availability Retired Buy this set at Amazon eBay	Retail $6.99 Value $74.97 Growth +972.5% Annual growth 6.3% I own this set I want this set

	30407 Harry's Journey to Hogwarts Theme / Subtheme Harry Potter / Philosopher's Stone Year 2018 Pieces / Minifigs 40 / 1 Availability Retired Buy this set at Amazon eBay Bricklink	Retail $3.99 Value $8.00 Growth +100.5% Annual growth 12.2% I own this set I want this set

76392 LEGO Harry Potter Philosopher's Stone Hogwarts Wizard's Chess

Set Value (New/Sealed)

For Sale (New/Sealed)

Sales Distribution (Last 90 Days)

Sale Trends

Minifigs

Sets in Harry Potter / Philosopher's Stone

My Collection

Set Details

Set Pricing

Quick Buy

Set Predictions

Set Facts

Hogwarts Wizard's Chess Reviews

Subtheme Analysis

About Harry Potter Philosopher's Stone