12ct. Two-Tone Lab Diamond & Gemstone Tennis Necklace | Celeste

from $12,500.00

A masterpiece of balanced brilliance, the Celeste Two-Tone Lab Diamond & Gemstone Tennis Necklace is meticulously handcrafted in your choice of solid gold or platinum. Precision-cut lab-grown diamonds are artfully paired with vibrant lab-grown gemstones, each stone expertly matched for fire, clarity, and colour. Hand set by master jewellers, they form a seamless ribbon of light and colour, refined and endlessly elegant.

Expertly graded and certified by IGI, complete with certificate
Complimentary insured express shipping & gift wrapping included

Finer details:

Lead Time
Made to order — please allow 4 weeks for our master jewellers to handcraft this piece to perfection

Stones
• Alternating round brilliant lab-grown diamonds and lab-grown gemstones
• Diamond size: 0.1ct. (3mm)
• Total carat weight: 12ct.
• Available with lab sapphires, lab rubies, or other custom gemstone selections

Metal
14K White Gold · 14K Yellow Gold · 14K Rose Gold
18K White Gold · 18K Yellow Gold · 18K Rose Gold
Platinum

Certification
The completed piece is sent to the IGI laboratory for independent assessment and certification

Setting
• Each diamond is expertly hand-set in a classic four-claw setting
• Secured with a box clasp and double safety latch for maximum security

Diamond Specifications
• Cut: Excellent
• Colour: D–E
• Clarity: VVS–VS
• Certification: IGI

Length
43cm — bespoke sizing available upon request

Not sure on your size? contact us for personalised guidance.

Packaging
Comes beautifully presented in our signature black gift box, hand-tied with a satin ribbon for an exquisite unboxing experience

Why you will love it
Celeste is a refined expression of colour and light — a modern heirloom that blends the brilliance of lab-grown diamonds with the depth and allure of fine gemstones. Striking yet timeless, it elevates every look with effortless sophistication.

Our Commitment to You
Every Harper Jewellery piece is crafted with exceptional care and precision, designed to be worn, loved, and treasured for years to come.

Size Guide

Material:

A masterpiece of balanced brilliance, the Celeste Two-Tone Lab Diamond & Gemstone Tennis Necklace is meticulously handcrafted in your choice of solid gold or platinum. Precision-cut lab-grown diamonds are artfully paired with vibrant lab-grown gemstones, each stone expertly matched for fire, clarity, and colour. Hand set by master jewellers, they form a seamless ribbon of light and colour, refined and endlessly elegant.

Expertly graded and certified by IGI, complete with certificate
Complimentary insured express shipping & gift wrapping included

Finer details:

Lead Time
Made to order — please allow 4 weeks for our master jewellers to handcraft this piece to perfection

Stones
• Alternating round brilliant lab-grown diamonds and lab-grown gemstones
• Diamond size: 0.1ct. (3mm)
• Total carat weight: 12ct.
• Available with lab sapphires, lab rubies, or other custom gemstone selections

Metal
14K White Gold · 14K Yellow Gold · 14K Rose Gold
18K White Gold · 18K Yellow Gold · 18K Rose Gold
Platinum

Certification
The completed piece is sent to the IGI laboratory for independent assessment and certification

Setting
• Each diamond is expertly hand-set in a classic four-claw setting
• Secured with a box clasp and double safety latch for maximum security

Diamond Specifications
• Cut: Excellent
• Colour: D–E
• Clarity: VVS–VS
• Certification: IGI

Length
43cm — bespoke sizing available upon request

Not sure on your size? contact us for personalised guidance.

Packaging
Comes beautifully presented in our signature black gift box, hand-tied with a satin ribbon for an exquisite unboxing experience

Why you will love it
Celeste is a refined expression of colour and light — a modern heirloom that blends the brilliance of lab-grown diamonds with the depth and allure of fine gemstones. Striking yet timeless, it elevates every look with effortless sophistication.

Our Commitment to You
Every Harper Jewellery piece is crafted with exceptional care and precision, designed to be worn, loved, and treasured for years to come.

Size Guide