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Creator: ITSIT
IGI Certified Untreated Bi Colour Sapphire & Diamond Three Stone Platinum Ring
IGI Certified Untreated Bi Colour Sapphire & Diamond Three Stone Platinum Ring

IGI Certified Untreated Bi Colour Sapphire & Diamond Three Stone Platinum Ring

By ITSIT

Located in Birmingham, GB

IGI Certified Natural Bi Colour Untreated Australian Sapphire Platinum Three Stone Ring. Rare IGI Certified 1.11 carat Australian sapphire with a stunning greenish blue - yellow bi ...

Category

21st Century and Contemporary ITSIT Engagement Rings

Materials

Sapphire, Blue Sapphire, Yellow Sapphire, Green Sapphire, Diamond, Platinum

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.76 Carat Radiant Cut Diamond Sapphire Platinum Three-Stone Engagement Ring
.76 Carat Radiant Cut Diamond Sapphire Platinum Three-Stone Engagement Ring

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Located in Stamford, CT

This sophisticated three-stone engagement ring features a sparkling .76 carat rectangular cut diamond at its center, beautifully flanked by two rich triangular sapphires on each side...

Category

21st Century and Contemporary ITSIT Engagement Rings

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Diamond, Sapphire, Blue Sapphire, Platinum

Spectacular Vivid Pink Sapphire Diamond Platinum Three-Stone Ring
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1990s American Contemporary ITSIT Engagement Rings

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Pink Sapphire, White Diamond, Diamond, Platinum

3.90 Carat Sapphire Diamond Platinum Three-Stone Engagement Ring
3.90 Carat Sapphire Diamond Platinum Three-Stone Engagement Ring

3.90 Carat Sapphire Diamond Platinum Three-Stone Engagement Ring

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3.90ct sapphire oval center stone with two trilliant cut side diamonds in a platinum three-stone setting. GIA certified sapphire, with simple heat only. 1 oval sapphire 3.90ct. to...

Category

1930s Unknown Vintage ITSIT Engagement Rings

Materials

Diamond, Sapphire, Platinum

3.18 Carat Blue Sapphire Diamond Platinum Three-Stone Engagement Ring
3.18 Carat Blue Sapphire Diamond Platinum Three-Stone Engagement Ring

3.18 Carat Blue Sapphire Diamond Platinum Three-Stone Engagement Ring

Located in Stamford, CT

Royal blue sapphire and diamond engagement ring. GIA certified oval center sapphire accented with two trilliant cut diamonds, in a three-stone platinum setting designed and created i...

Category

1980s Vintage ITSIT Engagement Rings

Materials

Blue Sapphire, Diamond, Sapphire, Platinum

1.70 Carat Purple Sapphire Diamond Platinum Three-Stone Engagement Ring
1.70 Carat Purple Sapphire Diamond Platinum Three-Stone Engagement Ring

1.70 Carat Purple Sapphire Diamond Platinum Three-Stone Engagement Ring

Located in Stamford, CT

GIA certified pear shape natural purple no heat no enhancement Sapphire and diamond engagement ring, with two side diamonds in a Platinum three-stone setting. 1950s. Purple Sapph...

Category

Mid-20th Century ITSIT Engagement Rings

Materials

Diamond, Sapphire, Purple Sapphire, Platinum

Sapphire Diamond Platinum Three Stone Ring
Sapphire Diamond Platinum Three Stone Ring

Sapphire Diamond Platinum Three Stone Ring

Located in New York, NY

This amazing platinum ring is centered with a natural oval cut sapphire that weighs approximately 1.50ct. The sapphire is flanked by two old mine cut diamonds weighing approximately ...

Category

20th Century Art Deco ITSIT Engagement Rings

Materials

Diamond, Sapphire, Platinum

1.61 Carat Padparadscha Sapphire Diamond Platinum Three-Stone Engagement Ring
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1.61 Carat Padparadscha Sapphire Diamond Platinum Three-Stone Engagement Ring

Located in Stamford, CT

Pink Padparadscha Sapphire and diamond engagement ring. Cushion cut GIA certified center sapphire in a platinum three-stone setting with 2 round side diamonds. Small interior inclusi...

Category

21st Century and Contemporary ITSIT Engagement Rings

Materials

Diamond, Pink Sapphire, Sapphire, Padparadscha Sapphire , Platinum

GIA Certified 1.28 Carat Diamond Platinum Three Stone Engagement Ring
GIA Certified 1.28 Carat Diamond Platinum Three Stone Engagement Ring

GIA Certified 1.28 Carat Diamond Platinum Three Stone Engagement Ring

Located in Stamford, CT

Three-Stone Diamond engagement ring. GIA certified round center stone in a platinum setting with 2 round accent diamonds. 1 GIA certified #15612228 round diamond approx. total weig...

Category

21st Century and Contemporary ITSIT Engagement Rings

Materials

Diamond, Platinum

GIA Certified 0.90 Carat H VS2 Diamond Three Stone Platinum Ring
GIA Certified 0.90 Carat H VS2 Diamond Three Stone Platinum Ring

GIA Certified 0.90 Carat H VS2 Diamond Three Stone Platinum Ring

By Diamond Stars Jewelry, Inc.

Located in New York, NY

The ring is Platinum 950 The center stone is a Round Brilliant Diamond The Center stone is GIA Certified 0.90 Carats H VS2 The 2 Side stones Princess Cut Diamonds 0.50 Carats Total W...

Category

21st Century and Contemporary American Contemporary ITSIT Engagement Rings

Materials

Diamond, White Diamond, Platinum

GIA Certified .93 Carat Yellow Diamond Three Stone Platinum Engagement Ring
GIA Certified .93 Carat Yellow Diamond Three Stone Platinum Engagement Ring

GIA Certified .93 Carat Yellow Diamond Three Stone Platinum Engagement Ring

Located in Stamford, CT

This 1920's Art Deco GIA Certified .93ct diamond three stone platinum engagement ring is a testament to timeless elegance and precision craftsmanship. Mounted with a vibrant yellow old European cut center diamond that is nestled by two round cut side diamonds. Being carefully set in a luxurious platinum band not only enhances the yellow diamond's brilliant hue but also ensures a secure hold. 1 GIA certified #2125984880 diamond, approx. total weight .93cts. O to P color...

Category

Early 20th Century ITSIT Engagement Rings

Materials

Diamond, Yellow Diamond, Platinum

Natural Brown Pink Sapphire Diamond Platinum Three-Stone Engagement Ring
Natural Brown Pink Sapphire Diamond Platinum Three-Stone Engagement Ring

Natural Brown Pink Sapphire Diamond Platinum Three-Stone Engagement Ring

Located in Stamford, CT

Sapphire and diamond engagement ring. GIA certified center brown and red center sapphire with 2 ideal cut side diamonds in a three-stone platinum setting. Color natural no heat, no e...

Category

Late 20th Century ITSIT Engagement Rings

Materials

Diamond, Sapphire, Brown Diamond, Pink Sapphire, Platinum

GIA Certified 4 Carat Oval Three-Stone Platinum Ring
GIA Certified 4 Carat Oval Three-Stone Platinum Ring

GIA Certified 4 Carat Oval Three-Stone Platinum Ring

By Antinori Fine Jewels

Located in Chicago, IL

This ring is positively stunning, showcasing a dazzling and impressively large 4 carat GIA certified diamond flanked by two additional certified oval cut diamonds. The glamorously la...

Category

2010s Italian Modern ITSIT Engagement Rings

Materials

Diamond, White Diamond, Platinum

Diamond Sapphire Ring. 2ct Old Euro Diamond Three Stone Engagement Ring Platinum
Diamond Sapphire Ring. 2ct Old Euro Diamond Three Stone Engagement Ring Platinum

Diamond Sapphire Ring. 2ct Old Euro Diamond Three Stone Engagement Ring Platinum

Located in New York, NY

Other Details: Primary Stone: Diamond Center Diamond Weight: 2.00 carats Center Diamond Cut: Old European Cut Center Diamond Color: J Center Diamond Clarity: VS2 Center Diamond Sett...

Category

21st Century and Contemporary Art Deco ITSIT Engagement Rings

Materials

Diamond, Sapphire, Platinum

GIA Certified .90 Carat Diamond Baguette Three-Stone Gold Platinum Ring
GIA Certified .90 Carat Diamond Baguette Three-Stone Gold Platinum Ring

GIA Certified .90 Carat Diamond Baguette Three-Stone Gold Platinum Ring

Located in Stamford, CT

Diamond engagement ring. Platinum and 18k yellow gold three-stone setting with a GIA certified round center diamond and two tapered baguette side diamonds. Ideal cut diamond, appro...

Category

Late 20th Century ITSIT Engagement Rings

Materials

Diamond, 18k Gold, Platinum, Yellow Gold, Gold

Itsit engagement rings for sale on 1stDibs.

Find a range of ITSIT engagement rings available on 1stDibs. Each of these unique items was designed with extraordinary care, often using platinum. While looking for the most stylish antique or vintage ITSIT jewelry to pair with your ensemble, you’ll find that ITSIT blue sapphire engagement rings, from our inventory of 1, can add a particularly distinctive touch to your look. We have 1 pieces in this collection as well as a number of other designs by this jeweler.