Name: Diamond Tennis Necklace Extender
Brand: gemjewelersco
SKU: TNE101
Price: 904.8 USD
Availability: InStock

Diamond Tennis Necklace Extender - Gem Jewelers Co

Diamond Tennis Necklace Extender with a Tennis Necklace

$1,392.00 $904.80 Save $487.20

★★★★★ (23) Reviews

This diamond necklace extender adds elegance and versatility to your favorite tennis necklaces. Crafted with natural diamonds, it ensures adjustable length and a comfortable, refined fit.

Overnight Shipping

100% Natural Diamonds

Lifetime Warranty

Rated Excellent 4.9/5

Add more style and comfort to your necklace with the Diamond Tennis Necklace Extender, providing a perfect, adjustable fit. Made from durable, premium-grade 14K Solid white Gold, it integrates seamlessly with your current piece, maintaining a consistent sparkle and elegant flow. The extender features natural round-cut diamonds in a secure 4-prong setting, creating a piece that radiates timeless brilliance and added durability. Moreover, the double safety clasp makes attachment and removal effortless.

Specifications

Diamond: Round 100% Natural Earth-Mined Diamonds
Setting: Prong Set
Color Grade: G
Clarity Grade: VS2
Cut: Excellent
Clasp: Box clasp with safety latch

All Our Tennis Necklaces are made in Los Angeles using the Highest Quality Gold and Diamonds.

Diamond Necklace Extender - Providing Comfort and Style

Smooth Connectivity: Easily connects to your tennis necklace with steady sparkle.
Safe and Resilient: Double safety clasp provides enduring trust and comfort.
Elegantly Compatible: Perfectly matches any diamond tennis necklace.
Refined Craftsmanship: Designed for everyday luxury using precision engineering and quality white gold.

Try pairing our diamond tennis necklace extender with the matching 4-Prong Natural Diamond Two-Tone Tennis Necklace in 18K Solid Gold for the perfect combination of functionality and elegance.

Take advantage of our flexible financing option to easily buy your favorite luxury jewelry.

Need assistance? Call us at (213) 436-4365 or book an appointment with our experts to explore your options.

Note: Please specify on your order what Size Carat Tennis Necklace you have, so we can make sure we can match it to the best of our ability.

This item is final sale.

GORGEOUS GIFT BOX

FREE OVERNIGHT SHIPPING

CERTIFICATE OF APPRAISAL

PRICE BEAT GUARANTEE

LIFETIME WARRANTY

Free Diamond Studs

Start Your Layaway Plan Today—Only $100 Down!

[{"id":44321897873663,"title":"3CT \/ 1 Inch \/ 14K White","option1":"3CT","option2":"1 Inch","option3":"14K White","sku":"TNE101","requires_shipping":true,"taxable":true,"featured_image":{"id":40379072807167,"product_id":8211502956799,"position":3,"created_at":"2023-10-04T12:23:29-04:00","updated_at":"2025-11-05T03:48:08-05:00","alt":"Diamond Tennis Necklace Extender - Gem Jewelers Co","width":1440,"height":1440,"src":"\/\/gemjewelersco.com\/cdn\/shop\/files\/Diamond_Tennis_Necklace_Extender_White.jpg?v=1762332488","variant_ids":[44321897873663,44321898070271,44321943978239,44321944011007,44321944043775,44321944076543,44321944109311,44321944142079,44325409882367,44325409915135,44325409947903,44325409980671]},"available":true,"name":"Diamond Tennis Necklace Extender - 3CT \/ 1 Inch \/ 14K White","public_title":"3CT \/ 1 Inch \/ 14K White","options":["3CT","1 Inch","14K White"],"price":90480,"weight":454,"compare_at_price":139200,"inventory_management":null,"barcode":null,"featured_media":{"alt":"Diamond Tennis Necklace Extender - Gem Jewelers Co","id":32994007089407,"position":3,"preview_image":{"aspect_ratio":1.0,"height":1440,"width":1440,"src":"\/\/gemjewelersco.com\/cdn\/shop\/files\/Diamond_Tennis_Necklace_Extender_White.jpg?v=1762332488"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":44321898070271,"title":"3CT \/ 2 Inches \/ 14K White","option1":"3CT","option2":"2 Inches","option3":"14K White","sku":"TNE102","requires_shipping":true,"taxable":true,"featured_image":{"id":40379072807167,"product_id":8211502956799,"position":3,"created_at":"2023-10-04T12:23:29-04:00","updated_at":"2025-11-05T03:48:08-05:00","alt":"Diamond Tennis Necklace Extender - Gem Jewelers Co","width":1440,"height":1440,"src":"\/\/gemjewelersco.com\/cdn\/shop\/files\/Diamond_Tennis_Necklace_Extender_White.jpg?v=1762332488","variant_ids":[44321897873663,44321898070271,44321943978239,44321944011007,44321944043775,44321944076543,44321944109311,44321944142079,44325409882367,44325409915135,44325409947903,44325409980671]},"available":true,"name":"Diamond Tennis Necklace Extender - 3CT \/ 2 Inches \/ 14K White","public_title":"3CT \/ 2 Inches \/ 14K White","options":["3CT","2 Inches","14K White"],"price":169845,"weight":454,"compare_at_price":261300,"inventory_management":null,"barcode":null,"featured_media":{"alt":"Diamond Tennis Necklace Extender - Gem Jewelers Co","id":32994007089407,"position":3,"preview_image":{"aspect_ratio":1.0,"height":1440,"width":1440,"src":"\/\/gemjewelersco.com\/cdn\/shop\/files\/Diamond_Tennis_Necklace_Extender_White.jpg?v=1762332488"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":44321943978239,"title":"4.34CT \/ 1 Inch \/ 14K White","option1":"4.34CT","option2":"1 Inch","option3":"14K White","sku":null,"requires_shipping":true,"taxable":true,"featured_image":{"id":40379072807167,"product_id":8211502956799,"position":3,"created_at":"2023-10-04T12:23:29-04:00","updated_at":"2025-11-05T03:48:08-05:00","alt":"Diamond Tennis Necklace Extender - Gem Jewelers Co","width":1440,"height":1440,"src":"\/\/gemjewelersco.com\/cdn\/shop\/files\/Diamond_Tennis_Necklace_Extender_White.jpg?v=1762332488","variant_ids":[44321897873663,44321898070271,44321943978239,44321944011007,44321944043775,44321944076543,44321944109311,44321944142079,44325409882367,44325409915135,44325409947903,44325409980671]},"available":true,"name":"Diamond Tennis Necklace Extender - 4.34CT \/ 1 Inch \/ 14K White","public_title":"4.34CT \/ 1 Inch \/ 14K White","options":["4.34CT","1 Inch","14K White"],"price":101790,"weight":454,"compare_at_price":156600,"inventory_management":null,"barcode":null,"featured_media":{"alt":"Diamond Tennis Necklace Extender - Gem Jewelers Co","id":32994007089407,"position":3,"preview_image":{"aspect_ratio":1.0,"height":1440,"width":1440,"src":"\/\/gemjewelersco.com\/cdn\/shop\/files\/Diamond_Tennis_Necklace_Extender_White.jpg?v=1762332488"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":44321944076543,"title":"4.34CT \/ 2 Inches \/ 14K White","option1":"4.34CT","option2":"2 Inches","option3":"14K White","sku":null,"requires_shipping":true,"taxable":true,"featured_image":{"id":40379072807167,"product_id":8211502956799,"position":3,"created_at":"2023-10-04T12:23:29-04:00","updated_at":"2025-11-05T03:48:08-05:00","alt":"Diamond Tennis Necklace Extender - Gem Jewelers Co","width":1440,"height":1440,"src":"\/\/gemjewelersco.com\/cdn\/shop\/files\/Diamond_Tennis_Necklace_Extender_White.jpg?v=1762332488","variant_ids":[44321897873663,44321898070271,44321943978239,44321944011007,44321944043775,44321944076543,44321944109311,44321944142079,44325409882367,44325409915135,44325409947903,44325409980671]},"available":true,"name":"Diamond Tennis Necklace Extender - 4.34CT \/ 2 Inches \/ 14K White","public_title":"4.34CT \/ 2 Inches \/ 14K White","options":["4.34CT","2 Inches","14K White"],"price":186745,"weight":454,"compare_at_price":287300,"inventory_management":null,"barcode":null,"featured_media":{"alt":"Diamond Tennis Necklace Extender - Gem Jewelers Co","id":32994007089407,"position":3,"preview_image":{"aspect_ratio":1.0,"height":1440,"width":1440,"src":"\/\/gemjewelersco.com\/cdn\/shop\/files\/Diamond_Tennis_Necklace_Extender_White.jpg?v=1762332488"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":44325409882367,"title":"6.31CT \/ 1 Inch \/ 14K White","option1":"6.31CT","option2":"1 Inch","option3":"14K White","sku":null,"requires_shipping":true,"taxable":true,"featured_image":{"id":40379072807167,"product_id":8211502956799,"position":3,"created_at":"2023-10-04T12:23:29-04:00","updated_at":"2025-11-05T03:48:08-05:00","alt":"Diamond Tennis Necklace Extender - Gem Jewelers Co","width":1440,"height":1440,"src":"\/\/gemjewelersco.com\/cdn\/shop\/files\/Diamond_Tennis_Necklace_Extender_White.jpg?v=1762332488","variant_ids":[44321897873663,44321898070271,44321943978239,44321944011007,44321944043775,44321944076543,44321944109311,44321944142079,44325409882367,44325409915135,44325409947903,44325409980671]},"available":true,"name":"Diamond Tennis Necklace Extender - 6.31CT \/ 1 Inch \/ 14K White","public_title":"6.31CT \/ 1 Inch \/ 14K White","options":["6.31CT","1 Inch","14K White"],"price":113230,"weight":454,"compare_at_price":174200,"inventory_management":null,"barcode":null,"featured_media":{"alt":"Diamond Tennis Necklace Extender - Gem Jewelers Co","id":32994007089407,"position":3,"preview_image":{"aspect_ratio":1.0,"height":1440,"width":1440,"src":"\/\/gemjewelersco.com\/cdn\/shop\/files\/Diamond_Tennis_Necklace_Extender_White.jpg?v=1762332488"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":44325409915135,"title":"6.31CT \/ 2 Inches \/ 14K White","option1":"6.31CT","option2":"2 Inches","option3":"14K White","sku":null,"requires_shipping":true,"taxable":true,"featured_image":{"id":40379072807167,"product_id":8211502956799,"position":3,"created_at":"2023-10-04T12:23:29-04:00","updated_at":"2025-11-05T03:48:08-05:00","alt":"Diamond Tennis Necklace Extender - Gem Jewelers Co","width":1440,"height":1440,"src":"\/\/gemjewelersco.com\/cdn\/shop\/files\/Diamond_Tennis_Necklace_Extender_White.jpg?v=1762332488","variant_ids":[44321897873663,44321898070271,44321943978239,44321944011007,44321944043775,44321944076543,44321944109311,44321944142079,44325409882367,44325409915135,44325409947903,44325409980671]},"available":true,"name":"Diamond Tennis Necklace Extender - 6.31CT \/ 2 Inches \/ 14K White","public_title":"6.31CT \/ 2 Inches \/ 14K White","options":["6.31CT","2 Inches","14K White"],"price":198185,"weight":454,"compare_at_price":304900,"inventory_management":null,"barcode":null,"featured_media":{"alt":"Diamond Tennis Necklace Extender - Gem Jewelers Co","id":32994007089407,"position":3,"preview_image":{"aspect_ratio":1.0,"height":1440,"width":1440,"src":"\/\/gemjewelersco.com\/cdn\/shop\/files\/Diamond_Tennis_Necklace_Extender_White.jpg?v=1762332488"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":44321944011007,"title":"7.34CT \/ 1 Inch \/ 14K White","option1":"7.34CT","option2":"1 Inch","option3":"14K White","sku":null,"requires_shipping":true,"taxable":true,"featured_image":{"id":40379072807167,"product_id":8211502956799,"position":3,"created_at":"2023-10-04T12:23:29-04:00","updated_at":"2025-11-05T03:48:08-05:00","alt":"Diamond Tennis Necklace Extender - Gem Jewelers Co","width":1440,"height":1440,"src":"\/\/gemjewelersco.com\/cdn\/shop\/files\/Diamond_Tennis_Necklace_Extender_White.jpg?v=1762332488","variant_ids":[44321897873663,44321898070271,44321943978239,44321944011007,44321944043775,44321944076543,44321944109311,44321944142079,44325409882367,44325409915135,44325409947903,44325409980671]},"available":true,"name":"Diamond Tennis Necklace Extender - 7.34CT \/ 1 Inch \/ 14K White","public_title":"7.34CT \/ 1 Inch \/ 14K White","options":["7.34CT","1 Inch","14K White"],"price":124410,"weight":454,"compare_at_price":191400,"inventory_management":null,"barcode":null,"featured_media":{"alt":"Diamond Tennis Necklace Extender - Gem Jewelers Co","id":32994007089407,"position":3,"preview_image":{"aspect_ratio":1.0,"height":1440,"width":1440,"src":"\/\/gemjewelersco.com\/cdn\/shop\/files\/Diamond_Tennis_Necklace_Extender_White.jpg?v=1762332488"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":44321944109311,"title":"7.34CT \/ 2 Inches \/ 14K White","option1":"7.34CT","option2":"2 Inches","option3":"14K White","sku":null,"requires_shipping":true,"taxable":true,"featured_image":{"id":40379072807167,"product_id":8211502956799,"position":3,"created_at":"2023-10-04T12:23:29-04:00","updated_at":"2025-11-05T03:48:08-05:00","alt":"Diamond Tennis Necklace Extender - Gem Jewelers Co","width":1440,"height":1440,"src":"\/\/gemjewelersco.com\/cdn\/shop\/files\/Diamond_Tennis_Necklace_Extender_White.jpg?v=1762332488","variant_ids":[44321897873663,44321898070271,44321943978239,44321944011007,44321944043775,44321944076543,44321944109311,44321944142079,44325409882367,44325409915135,44325409947903,44325409980671]},"available":true,"name":"Diamond Tennis Necklace Extender - 7.34CT \/ 2 Inches \/ 14K White","public_title":"7.34CT \/ 2 Inches \/ 14K White","options":["7.34CT","2 Inches","14K White"],"price":220805,"weight":454,"compare_at_price":339700,"inventory_management":null,"barcode":null,"featured_media":{"alt":"Diamond Tennis Necklace Extender - Gem Jewelers Co","id":32994007089407,"position":3,"preview_image":{"aspect_ratio":1.0,"height":1440,"width":1440,"src":"\/\/gemjewelersco.com\/cdn\/shop\/files\/Diamond_Tennis_Necklace_Extender_White.jpg?v=1762332488"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":44325409947903,"title":"9.20CT \/ 1 Inch \/ 14K White","option1":"9.20CT","option2":"1 Inch","option3":"14K White","sku":null,"requires_shipping":true,"taxable":true,"featured_image":{"id":40379072807167,"product_id":8211502956799,"position":3,"created_at":"2023-10-04T12:23:29-04:00","updated_at":"2025-11-05T03:48:08-05:00","alt":"Diamond Tennis Necklace Extender - Gem Jewelers Co","width":1440,"height":1440,"src":"\/\/gemjewelersco.com\/cdn\/shop\/files\/Diamond_Tennis_Necklace_Extender_White.jpg?v=1762332488","variant_ids":[44321897873663,44321898070271,44321943978239,44321944011007,44321944043775,44321944076543,44321944109311,44321944142079,44325409882367,44325409915135,44325409947903,44325409980671]},"available":true,"name":"Diamond Tennis Necklace Extender - 9.20CT \/ 1 Inch \/ 14K White","public_title":"9.20CT \/ 1 Inch \/ 14K White","options":["9.20CT","1 Inch","14K White"],"price":135850,"weight":454,"compare_at_price":209000,"inventory_management":null,"barcode":null,"featured_media":{"alt":"Diamond Tennis Necklace Extender - Gem Jewelers Co","id":32994007089407,"position":3,"preview_image":{"aspect_ratio":1.0,"height":1440,"width":1440,"src":"\/\/gemjewelersco.com\/cdn\/shop\/files\/Diamond_Tennis_Necklace_Extender_White.jpg?v=1762332488"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":44325409980671,"title":"9.20CT \/ 2 Inches \/ 14K White","option1":"9.20CT","option2":"2 Inches","option3":"14K White","sku":null,"requires_shipping":true,"taxable":true,"featured_image":{"id":40379072807167,"product_id":8211502956799,"position":3,"created_at":"2023-10-04T12:23:29-04:00","updated_at":"2025-11-05T03:48:08-05:00","alt":"Diamond Tennis Necklace Extender - Gem Jewelers Co","width":1440,"height":1440,"src":"\/\/gemjewelersco.com\/cdn\/shop\/files\/Diamond_Tennis_Necklace_Extender_White.jpg?v=1762332488","variant_ids":[44321897873663,44321898070271,44321943978239,44321944011007,44321944043775,44321944076543,44321944109311,44321944142079,44325409882367,44325409915135,44325409947903,44325409980671]},"available":true,"name":"Diamond Tennis Necklace Extender - 9.20CT \/ 2 Inches \/ 14K White","public_title":"9.20CT \/ 2 Inches \/ 14K White","options":["9.20CT","2 Inches","14K White"],"price":232115,"weight":454,"compare_at_price":357100,"inventory_management":null,"barcode":null,"featured_media":{"alt":"Diamond Tennis Necklace Extender - Gem Jewelers Co","id":32994007089407,"position":3,"preview_image":{"aspect_ratio":1.0,"height":1440,"width":1440,"src":"\/\/gemjewelersco.com\/cdn\/shop\/files\/Diamond_Tennis_Necklace_Extender_White.jpg?v=1762332488"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":44321944043775,"title":"10.25CT \/ 1 Inch \/ 14K White","option1":"10.25CT","option2":"1 Inch","option3":"14K White","sku":null,"requires_shipping":true,"taxable":true,"featured_image":{"id":40379072807167,"product_id":8211502956799,"position":3,"created_at":"2023-10-04T12:23:29-04:00","updated_at":"2025-11-05T03:48:08-05:00","alt":"Diamond Tennis Necklace Extender - Gem Jewelers Co","width":1440,"height":1440,"src":"\/\/gemjewelersco.com\/cdn\/shop\/files\/Diamond_Tennis_Necklace_Extender_White.jpg?v=1762332488","variant_ids":[44321897873663,44321898070271,44321943978239,44321944011007,44321944043775,44321944076543,44321944109311,44321944142079,44325409882367,44325409915135,44325409947903,44325409980671]},"available":true,"name":"Diamond Tennis Necklace Extender - 10.25CT \/ 1 Inch \/ 14K White","public_title":"10.25CT \/ 1 Inch \/ 14K White","options":["10.25CT","1 Inch","14K White"],"price":147030,"weight":454,"compare_at_price":226200,"inventory_management":null,"barcode":null,"featured_media":{"alt":"Diamond Tennis Necklace Extender - Gem Jewelers Co","id":32994007089407,"position":3,"preview_image":{"aspect_ratio":1.0,"height":1440,"width":1440,"src":"\/\/gemjewelersco.com\/cdn\/shop\/files\/Diamond_Tennis_Necklace_Extender_White.jpg?v=1762332488"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":44321944142079,"title":"10.25CT \/ 2 Inches \/ 14K White","option1":"10.25CT","option2":"2 Inches","option3":"14K White","sku":null,"requires_shipping":true,"taxable":true,"featured_image":{"id":40379072807167,"product_id":8211502956799,"position":3,"created_at":"2023-10-04T12:23:29-04:00","updated_at":"2025-11-05T03:48:08-05:00","alt":"Diamond Tennis Necklace Extender - Gem Jewelers Co","width":1440,"height":1440,"src":"\/\/gemjewelersco.com\/cdn\/shop\/files\/Diamond_Tennis_Necklace_Extender_White.jpg?v=1762332488","variant_ids":[44321897873663,44321898070271,44321943978239,44321944011007,44321944043775,44321944076543,44321944109311,44321944142079,44325409882367,44325409915135,44325409947903,44325409980671]},"available":true,"name":"Diamond Tennis Necklace Extender - 10.25CT \/ 2 Inches \/ 14K White","public_title":"10.25CT \/ 2 Inches \/ 14K White","options":["10.25CT","2 Inches","14K White"],"price":243360,"weight":454,"compare_at_price":374400,"inventory_management":null,"barcode":null,"featured_media":{"alt":"Diamond Tennis Necklace Extender - Gem Jewelers Co","id":32994007089407,"position":3,"preview_image":{"aspect_ratio":1.0,"height":1440,"width":1440,"src":"\/\/gemjewelersco.com\/cdn\/shop\/files\/Diamond_Tennis_Necklace_Extender_White.jpg?v=1762332488"}},"requires_selling_plan":false,"selling_plan_allocations":[]}]

{"id":44321897873663,"title":"3CT \/ 1 Inch \/ 14K White","option1":"3CT","option2":"1 Inch","option3":"14K White","sku":"TNE101","requires_shipping":true,"taxable":true,"featured_image":{"id":40379072807167,"product_id":8211502956799,"position":3,"created_at":"2023-10-04T12:23:29-04:00","updated_at":"2025-11-05T03:48:08-05:00","alt":"Diamond Tennis Necklace Extender - Gem Jewelers Co","width":1440,"height":1440,"src":"\/\/gemjewelersco.com\/cdn\/shop\/files\/Diamond_Tennis_Necklace_Extender_White.jpg?v=1762332488","variant_ids":[44321897873663,44321898070271,44321943978239,44321944011007,44321944043775,44321944076543,44321944109311,44321944142079,44325409882367,44325409915135,44325409947903,44325409980671]},"available":true,"name":"Diamond Tennis Necklace Extender - 3CT \/ 1 Inch \/ 14K White","public_title":"3CT \/ 1 Inch \/ 14K White","options":["3CT","1 Inch","14K White"],"price":90480,"weight":454,"compare_at_price":139200,"inventory_management":null,"barcode":null,"featured_media":{"alt":"Diamond Tennis Necklace Extender - Gem Jewelers Co","id":32994007089407,"position":3,"preview_image":{"aspect_ratio":1.0,"height":1440,"width":1440,"src":"\/\/gemjewelersco.com\/cdn\/shop\/files\/Diamond_Tennis_Necklace_Extender_White.jpg?v=1762332488"}},"requires_selling_plan":false,"selling_plan_allocations":[]}

Lifetime Warranty

All our Jewelry is Covered by Our Lifetime Manufacturing Warranty*

Natural Certified Diamonds

All our Diamonds are 100% Natural and Conflict Free. Not Lab Made of Any Sort.

Free Shipping and Returns

All Orders are Shipped with Free Insured Overnight Shipping with A 14-Day Money Back Guarantee.

Manufactured in The USA

All Our Jewelry is Manufactured in Los Angeles, by The Most Skilled Jewelers Undergoing the Strictest Quality Control.

Gem Jewelers Co.

OUR PROMISE

At Gem Jewelers Co. We want our customers to have the ease of shopping online with us by giving our 100% Satisfaction Guarantee Promise.

Every diamond purchased at Gem Jewelers Comes from an ethically sourced diamond supplier that complies with the Internationally recognized Kimberley Process, and are 100% natural.

All our gold jewelry and diamonds are manufactured here in Los Angeles's Historic Jewelry District, supervised by our strict quality control guidelines making sure we meet your standards.

Lastly, we want to keep our pricing very fair and competitive so if you do see anything similar at a reduced rate elsewhere please contact us, so we can beat the price and make sure you keep saving money.