Lot 0311

Cantamessa 18k Gold Diamond Gemstone Ring

Similar Sale History

View More Items in Rings

Sold

Bulgari Bvlgari Allegra 18K Gold Diamond Gemstone Ring: METAL: 18K white gold. GEMSTONE: diamonds-approx. 1.50ctw, blue topaz, pink tourmaline, peridot cabochon, citrine cabochon. MEASUREMENTS: ring size 6.75. Ring is 14.6mm at widest point. MARKED: Bvlgar

2018Bulgari Bvlgari Allegra 18K Gold Diamond Gemstone RingSee Sold Price

Sold

Bellarri 18k Gold Diamond Gemstone Ring: 18k gold Bellarri ring, with approx. 0.10ctw in diamonds, and multi color gemstones - citrine, topaz, amethyst, tourmaline. Ring size - 7.25, ring top - 15mm x 24mm. Marked: B hallmarks, 18k, USA. Wei

2021Bellarri 18k Gold Diamond Gemstone RingSee Sold Price

Sold

Roberto Coin 18k Gold Diamond Gemstone Ring: METAL: 18k gold. MEASUREMENTS: ring size - 7 3/4, ring top is 33mm x 23mm. GEMSTONES: olive green gemstone, diamonds approx. 1.00ctw. MARKED: Italy, 18kt, Roberto Coin, signature Ruby. WEIGHT: 28.3 gr

2017Roberto Coin 18k Gold Diamond Gemstone RingSee Sold Price

Sold

Bellarri 18k Gold Diamond Gemstone Ring: Metal Content: 18k Gold.Weight of Item: 11.4 grams.Size: Ring size - 7, top - 26mm x 21mm. Gemstone: Diamonds, Citrine, Amethyst, Tourmaline. Carat Weight: approx. 0.50ctw. Stamp: Bellari, 18k.

2019Bellarri 18k Gold Diamond Gemstone RingSee Sold Price

Sold

Art Deco 18k Gold Diamond Gemstone Ring Lot of 2: Ring sizes are 5 3/4 and 6 1/2. Decorated with blue gemstone , sapphire and diamonds. Marked 18k. Weight - 7.2 grams.Gemstones have not been graded for color and clarity ,and tested for clarity and co

2015Art Deco 18k Gold Diamond Gemstone Ring Lot of 2See Sold Price

Sold

Bibigi 18k Gold Diamond Gemstone Ring: METAL: 18k Gold. MEASUREMENTS: Ring size - 6.25, ring top - 21mm x 20mm. GEMSTONES: Ball shaped gemstones - peridot, aquamarine, citrine, tourmaline. Diamonds. MARKED: 750, Bibigi. WEIGHT: 12.2 grams.

2020Bibigi 18k Gold Diamond Gemstone RingSee Sold Price

Sold

Antique 18k Gold Diamond Gemstone Ring: Antique 18k gold ring, with light blue center gemstone (approx. 5mm in diameter) and diamonds. Ring size - 6.5, ring top is 15mm wide. Marked: 750. Weight - 2.4 grams.

2021Antique 18k Gold Diamond Gemstone RingSee Sold Price

Sold

Dior 18K Gold Diamond Multi Gemstone Ring: METAL: 18k Gold. GEMSTONES: Diamonds approx. 1.02ctw (one stone is missing), Tourmaline (small chip) , Peridot, Citrine, Amethyst and Topaz. MEASUREMENTS: Ring size 9 3/4, ring top is 23mm wide. MARKE

2021Dior 18K Gold Diamond Multi Gemstone RingSee Sold Price

Sold

18K Gold Diamond Gemstone Crown Ring: 18k yellow gold crown ring. Set with diamonds approx. 0.12ctw, emeralds and red gems. Measures - 9 1/2, ring band is 14.6mm wide. Weight 13.6 grams. Marked 750 Gu.

202018K Gold Diamond Gemstone Crown RingSee Sold Price

Sold

Bellarri 18K Gold Diamond Multi Gemstone Ring: METAL: 18k Gold. GEMSTONES: Diamonds approx. 0.12ctw. Multi color gemstones. MEASUREMENTS: Ring size 6 3/4, ring top is 20mm wide. MARKED: Bellarri 18k. WEIGHT: 14.4 grams.Gemstones have not been grad

2019Bellarri 18K Gold Diamond Multi Gemstone RingSee Sold Price

Sold

Lalaounis 18K Gold Diamond Gemstone Chimera Ring: METAL: 18K gold. GEMSTONES: diamonds, red gemstones. MEASUREMENTS: ring size 7.5. Ring top is 16.5mm at widest point. MARKED: Greece A21 750,maker's hallmark. WEIGHT: 9.1 grams.Gemstones have not

2017Lalaounis 18K Gold Diamond Gemstone Chimera RingSee Sold Price

Sold

18K Gold Diamond Gemstone Snake Ring: METAL: 18K gold. GEMSTONES: diamonds-approx. 1.50ctw, red gemstones. MEASUREMENTS: ring size 7. Ring top is 28mm at widest point. MARKED: 18K CJ. WEIGHT: 12.1 grams.Gemstones have not been graded for

201818K Gold Diamond Gemstone Snake RingSee Sold Price

Sold

Piaget Possession 18k Gold Diamond Gemstone Band Ring: METAL: 18k Gold. GEMSTONES: Diamonds, Emerald, Ruby and Sapphires (multiple stones are abraded). MEASUREMENTS: Ring size 4 1/2, ring band is 10.8mm wide. MARKED: Piaget 1991, 750 A49474 48, Eagle Hall

2021Piaget Possession 18k Gold Diamond Gemstone Band RingSee Sold Price

Sold

Antique 18k Gold Silver Diamond Gemstone Ring: Antique 18k gold and silver ring, with center dark green gemstone (minor nicks and abrasions are present) and rose cut diamonds. Ring size - 6.25 ring top is 25mm x 16mm. Marked 750. Weight - 12.7 gra

2021Antique 18k Gold Silver Diamond Gemstone RingSee Sold Price

Sold

Artisanal 18k Gold Diamond Gemstone Band Ring: Metal : 18k Gold Designer : Artisanal/ Unknown Designer Signed Gemstone : Diamond, Ruby, Sapphire, Emerald Measurements : Ring size 6.25, ring is 8mm wide Marked: : Maker's mark, AU, 750

2023Artisanal 18k Gold Diamond Gemstone Band RingSee Sold Price

Sold

Modern 18k Gold Sapphire Diamond Gemstone Ring: METAL: 18k Gold. MEASUREMENTS: Ring size - 7.25, ring top is 14mm x 14mm. GEMSTONES: Diamonds approx. 0.36ctw, Sapphires, Yellow faceted gemstone - 9mm x 9mm. MARKED: 750, S GL. WEIGHT: 7.3 grams.Gems

2020Modern 18k Gold Sapphire Diamond Gemstone RingSee Sold Price

Related Rings

TUTTI FRUTTI 18K GOLD DIAMOND AND GEMSTONE COCKTAIL RING, CIRCA 1950: Art Deco inspired Tutti Frutti iconic style 18k yellow gold cocktail ring set with 6 sapphire, 3 ruby and 9 emerald carved leaves having a combined gemstone weight of approx. 45.1 carats. The ring is

May 23, 2024TUTTI FRUTTI 18K GOLD DIAMOND AND GEMSTONE COCKTAIL RING, CIRCA 1950

$1,000

Plum Rhodolite Garnet Diamond Gemstone Cocktail Ring 18K White Gold, 6.35 CTW: Plum Rhodolite Garnet Diamond Gemstone Cocktail Ring 18K White Gold, 6.35 CTW This is a stunning and unique ring! Please let us know if you have any questions. Gemstone: 1 cushion purple rhodolite gar

6 days LeftPlum Rhodolite Garnet Diamond Gemstone Cocktail Ring 18K White Gold, 6.35 CTW

$1,000

David Webb Platinum & 18K Yellow Gold Multi Color Gemstone And Diamond Ring: David Webb Platinum & 18K Yellow Gold Multi Color Gemstone And Diamond Ring Type: Estate Rings Metal: Platinum & 18K Yellow Gold Grams: 22.5 Ring Size: 6 Measurements: Size 6 Condition: Excellent. Sig

2 days LeftDavid Webb Platinum & 18K Yellow Gold Multi Color Gemstone And Diamond Ring

$10

Natural tsavorite ring for women 18K gold diamond emerald colorful gemstone bracelet: Natural tsavorite ring for women 18K gold diamond emerald colorful gemstone braceletCargo weight: 12.16g, net gold weight: 11.69g/1.11ct, side stone: 1.252ct

Jun 02, 2024Natural tsavorite ring for women 18K gold diamond emerald colorful gemstone bracelet

$5,000

Buccellati 18k Gold Diamond Band Ring: Metal : 18k Gold Designer : Buccellati Gemstone : Diamonds approx. 1.00ctw, H/VS-Si1. Measurements : Ring size 4.75, ring is 10mm wide. Marked: : Buccellati, Italy, 18k. Weight:

May 23, 2024Buccellati 18k Gold Diamond Band Ring

$2,500

HIdalgo 18k Gold Enamel Diamond Band Ring: Metal : 18k Gold Designer : Hidalgo Gemstone : Diamonds approx. 0.12ctw. Measurements : Ring size 6.25, ring is 5.5mm wide. Marked: : Hidalgo 750. Weight: : 7.1 grams

May 23, 2024HIdalgo 18k Gold Enamel Diamond Band Ring

$400

Hidalgo 18k Gold Diamond Enamel Band Ring: Metal : 18k Gold Designer : Hidalgo Gemstone : Diamonds approx. 0.03ctw. Measurements : Ring size 6.5, ring is 4mm wide. Marked: : 750, Hidalgo mark is polished off. Weight:

May 23, 2024Hidalgo 18k Gold Diamond Enamel Band Ring

$300

Fred Paris 18k Gold Diamond Band Ring: Metal : 18k Gold Designer : Fred Gemstone : Diamonds approx. 0.40ctw. Measurements : Ring size 5.5, top is 11.5mm wide. Marked: : Fred, Au750, 50, 1008998. Weight: : 9.6 g

May 23, 2024Fred Paris 18k Gold Diamond Band Ring

$1,100

18k Gold Diamond Ruby Sapphire Emerald Wide Band Ring: Metal : 18k Gold Designer : Not Signed Gemstone : Diamonds approx. 0.27ctw, Ruby, Sapphire, Emerald (multiple chipped stones, 1 missing). Measurements : Ring size 9, top is 17mm wide. Marked:

May 23, 202418k Gold Diamond Ruby Sapphire Emerald Wide Band Ring

$750

18k Gold Diamond Sapphire Wide Band Ring: Metal : 18k Gold Designer : Not Signed Gemstone : Diamonds approx. 2.00ctw, Sapphires. Measurements : Ring size 7, top is 18mm wide. Marked: : 750. Weight: : 12.3 grams

May 23, 202418k Gold Diamond Sapphire Wide Band Ring

$1,200

18k Gold 12mm South Sea Pearl Diamond Ring: Metal : 18k Gold Designer : Not Signed Gemstone : Diamonds 1.41ctw GH/VS-SI , South Sea pearl 12mm. Measurements : Ring size 5.25. Marked: : k18, 0.26, 1.15. Weight: : 9 gra

May 23, 202418k Gold 12mm South Sea Pearl Diamond Ring

$1,200

Vintage Turquoise Ring 18k Gold Diamond French Estate Jewelry Signed SC: Gorgeous cocktail ring featuring a beautiful oval cabochon turquoise set in 18 karat yellow gold and accented with single cut diamonds (I-J color, VS2 clarity, approximately 0.70 carat total weight).

6 days LeftVintage Turquoise Ring 18k Gold Diamond French Estate Jewelry Signed SC

$2,800

1960s 18k Gold Diamond Turquoise Cocktail Ring: Metal : 18k Gold Designer : Not Signed Gemstone : Turquoise 15mm x 11mm. Diamonds approx. 1.10ctw. Measurements : Ring size 7, top is 28mm x 25mm. Marked: : 18k. Weight: :

May 23, 20241960s 18k Gold Diamond Turquoise Cocktail Ring

$900

18k Gold Diamond Engagement Ring: Metal : 18k Gold Designer : Not Signed Gemstone : Center diamond approx. 0.35ct. Measurements : Ring size 7.5, top is 6.5mm wide. Marked: : 8CT. Weight: : 2.5 grams

May 23, 202418k Gold Diamond Engagement Ring

$375

Multi Gemstone and Diamond Tremble Flower Garland Ring, Italian: View a video of this lot: Click HereSummary of Key Characteristics • Metal: 18K yellow gold • Gemstone(s): round faceted emeralds approx. 0.15 carat

8 hrs LeftMulti Gemstone and Diamond Tremble Flower Garland Ring, Italian

$2,400

GIA Ceylon Blue Sapphire Diamond 18K Gold Pave Cluster Cocktail Ring: This beautiful, exquisite vivid & bright blue Sapphire & Diamond ring is covered in fine sapphire gemstones & centered by a genuine Sri Lankan sapphire. An alluring Cushion Cut, GIA certified Blue Sap

May 31, 2024GIA Ceylon Blue Sapphire Diamond 18K Gold Pave Cluster Cocktail Ring

$8,100

More Items in Rings

14k Art Deco Diamond Engagement Ring: An early 20th century Art Deco Period 14k White Gold and Diamond engagement ring. Domed filigree setting with milgrain detail and three round cut diamond approx. 0.31 cttw. Marked "14k". 2.3 grams tot

2 days Left14k Art Deco Diamond Engagement Ring

$325

18K Sapphire & Diamond Ring: 18K Sapphire & Diamond Ring. Natural stone square faceted sapphire 6.5 cts. est.; diamond total est. 1.6cts.; ring size 5.5; weight 5.92 dwts.

5 days Left18K Sapphire & Diamond Ring

$2,150

14K Diamond & Emerald Ring: 14K White Gold & Emerald 7 cts. est Ring. Size 7; weight 6.51 dwts.

5 days Left14K Diamond & Emerald Ring

$1,400

Early Diamond Engagement Ring: 18K heavy band with center buttercup setting holding an Old Mine cut diamond, inner band inscribed "W.H.E. and M.L.B.", "1844", Old Mine cut diamond is approx. 0.60+ ct, chip on girdle, ring size 6-3/

3 days LeftEarly Diamond Engagement Ring

$520

14k White Gold Heart Shaped Diamond Solitaire Ring size 8: Natural diamond, SI-2 HI color. 1.26 carats. Total weight 1.9 grams.

3 days Left14k White Gold Heart Shaped Diamond Solitaire Ring size 8

$775

3 days LeftTIFFANY & CO. JEAN SCHLUMBERGER 18K YELLOW GOLD PLATINUM RING

$1,300

Blue Sapphire 6cts. with Diamonds Ring, Size 7 Ca. 1960: Blue Sapphire 6cts. with Diamonds Ring, Size 7 Ca. 1960 | Platinum and 18K yellow gold. Approx. 6 carats sapphire. Openwork shank with diamond melee.

8 hrs LeftBlue Sapphire 6cts. with Diamonds Ring, Size 7 Ca. 1960

$1,700

FINE MODERN 14KT WH GOLD/DIAM. ENGAGEMENT RING, C. 1960: FINE MODERN 14KT WHITE GOLD/DIAMOND ENGAGEMENT RING, C. 1960, W. 4.2 DWT, SIZE 7

2 days LeftFINE MODERN 14KT WH GOLD/DIAM. ENGAGEMENT RING, C. 1960

$350

Platinum Diamond Solitaire Ring: Platinum Diamond Solitaire Ring. Approx. 1.3 cts I-J color SI2-SI3; ring size 5.5; 2.26 dwts.

5 days LeftPlatinum Diamond Solitaire Ring

$350

14K Yellow Gold Carnelian Intaglio Signet Ring: 14K Yellow Gold Carnelian Intaglio Signet Ring, featuring one carved carnelian intaglio oval with griffin head and motto "FOLLOW ME", marked: "14K" with maker's mark. Measuring approx. US size 7 1/4,

Jun 09, 202414K Yellow Gold Carnelian Intaglio Signet Ring

$500

Round Brilliant 6.55 ct VS1 Clarity, G Color Diamond Platinum Solitaire Ring: Round Brilliant 6.55 ct VS1 Clarity, G Color Diamond Platinum Solitaire Ring Features: Only One Available GIA Included Jewelry Grading/Gemological Report Included Product Details To inquire about this

3 days LeftRound Brilliant 6.55 ct VS1 Clarity, G Color Diamond Platinum Solitaire Ring

$50,000

PLATINUM NATURAL DIAMOND HALO STYLE ENGAGEMENT RING: Center is round natural diamond weight is 72 pt. Color H. Clarity S I 2. In the halo around center stone holds 12 3/12 points of round natural diamonds equaling 42pt. Color G. Clarity S I 3. To each s

May 23, 2024PLATINUM NATURAL DIAMOND HALO STYLE ENGAGEMENT RING

$500

Radiant Cut 1.54 ct Center VVS1 Clarity, Fancy Pink Diamond Platinum Halo Ring: Radiant Cut 1.54 ct Center VVS1 Clarity, Fancy Pink Diamond Platinum Halo Ring Features: 2.24 ctw Only One Available GIA Included Jewelry Grading/Gemological Report Included Product Details To inquire

3 days LeftRadiant Cut 1.54 ct Center VVS1 Clarity, Fancy Pink Diamond Platinum Halo Ring

$5,000

c1950 Deco Style 14k White Gold Bulova Diamond Cocktail Wristwatch: c1950s white gold bulova wrist watch, 23 jewel mechanical. 1.25 carat natural diamonds. Original band and box. Running strong and keeping time.

3 days Leftc1950 Deco Style 14k White Gold Bulova Diamond Cocktail Wristwatch

$170

Estate Lot of 5 14k/18k White Gold Diamond Rings: Estate Lot of 5 14k/18k White Gold Diamond Rings. (1) 14K Diamond three stone ring, size 6. 3.24 mm center diamond set in illusion head. SI2 Clarity, I Color .14 Ct (side stones) 1.75 mm, single cut d

Jul 07, 2024Estate Lot of 5 14k/18k White Gold Diamond Rings

$350

Bibi Hilton's 4.70ctw Diamond and Ruby 18K Engagement Ring: Bibi Hilton's 2.50ct Oval Cut Diamond, 1.70ctw Ruby, 0.50ctw Round Cut Diamond and 18K Yellow Gold Custom Designed Engagement Ring From Eric Hilton (From the Estate of Mrs. Bibi Hilton) - This lovely

May 25, 2024Bibi Hilton's 4.70ctw Diamond and Ruby 18K Engagement Ring

$4,250

Recommended Jewelry

2 days Left14k Art Deco Diamond Engagement Ring

$325

PATEK-PHILIPPE GENEVE 18KT GOLD OPEN FACE POCKET WATCH: PATEK-PHILIPPE GENEVE 18KT YELLOW GOLD OPEN FACE POCKET WATCH, SERIAL #196374, 19/20TH C., DIAM. 43.18 MM, W. 51.6 DWT

2 days LeftPATEK-PHILIPPE GENEVE 18KT GOLD OPEN FACE POCKET WATCH

$2,500

5 days Left18K Sapphire & Diamond Ring

$2,150

1.42ctw Diamond Earrings in 14K Gold: Estimated Retail Replacement Value: $25,200.00Ref: WAG14400Item no.: EJZ003Specification:Gold Content: Solid 14K White GoldWeight of Item: 1.20 gramsCountry Made: U.S.A Main Gemstone: Natural Diamond

Live Now1.42ctw Diamond Earrings in 14K Gold

See Sold Price

14k Yellow Gold Chanel Set Diamond Bangle Bracelet: 14k yellow gold bangle with chanel set diamonds, approx 1/2+ carat total weight (25 diamonds). Measure Inside circumference 6.5". Total weight 15.2 grams.

3 days Left14k Yellow Gold Chanel Set Diamond Bangle Bracelet

$575

5 days Left14K Diamond & Emerald Ring

$1,400

3 days LeftEarly Diamond Engagement Ring

$520

3 days Left14k White Gold Heart Shaped Diamond Solitaire Ring size 8

$775

A LOT OF TWO VINTAGE SOUTHWESTERN NECKLACE GREEN KINGMAN TURQUOISE: THE NECKLACES MEASURE 19" EACH, WITH STERLING BENCH BEADS AND CONE TIPS. GREEN KINGSMAN TURQUOISE, LAPIS LAZULI AND CORAL. WE PROVIDE IN-HOUSE COMBINED SHIPPING FOR A SMOOTH AND EASY CHECKOUT.

4 days LeftA LOT OF TWO VINTAGE SOUTHWESTERN NECKLACE GREEN KINGMAN TURQUOISE

$80

A VINTAGE NECKLACE MODERNIST STERLING SILVER SIGNED GUMUS7: THE STUNNING NECKLACE IS 17" AROUND. IT WEIGHS 62 GRAMS. IT IS BEAUTIFULLY CRAFTED IN HIGH GRADE STERLING SILVER, MARKED GUMUS7 925. WE PROVIDE IN-HOUSE COMBINED SHIPPING FOR A SMOOTH AND EASY CHECKOU

4 days LeftA VINTAGE NECKLACE MODERNIST STERLING SILVER SIGNED GUMUS7

$130

A STUNNING SIGNED DESIGNER NECKLACE ORIGINAL BY STEFAN DINU: THE EXQUISITE NECKLACE IS SIGNED BY LISTED ARTIST STEFAN LUCIAN DINU, IN TWO PLACES. IT INCLUDES BAROQUE PEARLS, CRYSTALS, A NATURAL SHELL AND RHINESTONES. THE NECKLACE MEASURES 36" IN TOTAL WEARABLE

4 days LeftA STUNNING SIGNED DESIGNER NECKLACE ORIGINAL BY STEFAN DINU

$100

FAB SIGNED DESIGNER NECKLACE AND EARRINGS ORIGINAL BY STEFAN DINU: THE EXQUISITE RHINESTONE NECKLACE AND EARRINGS SET IN SHADES OF PURPLE IS SIGNED BY LISTED ARTIST STEFAN LUCIAN DINU, IN TWO PLACES. THE NECKLACE MEASURES 20" IN TOTAL WEARABLE LENGTH.THE PENDANT IS 5

4 days LeftFAB SIGNED DESIGNER NECKLACE AND EARRINGS ORIGINAL BY STEFAN DINU

$350

Cartier PANTHERE CLASSIQUE 18K Gold Estate Watch: Artist/Designer; Manufacturer: Cartier (France)Marking(s); notes: Cartier imprints, 18K, 750, 887968C, 005593, marking(s)Materials: 18K gold, sapphireDimensions (H, W, D)

2 days LeftCartier PANTHERE CLASSIQUE 18K Gold Estate Watch

$3,500

NW COAST "RAVEN" ENGRAVED/TOOLED STERLING CUFF BRACELET: RARE NORTHWEST COAST "RAVEN" ENGRAVED/TOOLED STERLING CUFF BRACELET SIGNED DANIEL, C. 1960, SIZE 5 3/4", 1.5 OZ.

2 days LeftNW COAST "RAVEN" ENGRAVED/TOOLED STERLING CUFF BRACELET

$160

2023 Rolex GMT-Master II "Batman" 40mm with Original Box and COA: 2023 Rolex GMT-Master II "Batman" 40mm. Original Box and COA. Model: 126710BLNR - Serial 8R7244J2 - Date of Purchase 8/10/2023 - Description Silver, runstyle is dark blue on top with a blue at the bot

2 days Left2023 Rolex GMT-Master II "Batman" 40mm with Original Box and COA

$6,500

3 days LeftTIFFANY & CO. JEAN SCHLUMBERGER 18K YELLOW GOLD PLATINUM RING

$1,300

Cantamessa 18k Gold Diamond Gemstone Ring

Item Details

Description

METAL: 18k Gold. MEASUREMENTS: Ring size - 7.25, ring top - 26mm wide. GEMSTONES: Green gemstones , diamonds approx. 2.38ctw, green gemstone ( scratches) - 17.3mm x 14.2mm. MARKED: Cantamessa, 750, Italian marks. WEIGHT: 14.5 grams.Gemstones have not been graded for color and clarity ,and tested for clarity and color enhancement, unless stated otherwise.

Condition

Preowned. Green gemstone is scratched. kb

Buyer's Premium

22% up to $50,000.00
20% up to $250,000.00
18% above $250,000.00

Cantamessa 18k Gold Diamond Gemstone Ring

Name: Cantamessa 18k Gold Diamond Gemstone Ring
SKU: 83554545
Price: 1400 USD
Availability: InStock

Estimate $1,800 - $3,500

See Sold Price

Starting Price $1,200

Sell a Similar Item

5 bidders are watching this item.

Shipping & Pickup Options

Item located in Lahaska, PA, us

See Policy for Shipping

Payment

Hampton Estate Auction

TOP RATED

Lambertville, NJ, United States

306 Reviews

5,210 Followers