Cat's Eye Sillimanite and Diamond 18-Karat Gold Necklace

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This is Cat's Eye Sillimanite, a rare gem mined in Sri Lanka and India for the most part. The reflection of light off the gem's inner crystal growth gives the impression that there is an eye watching, looking back and forth as the stone is moved in the light. This is a stunning stone, which we have set into the simplest pendant frame. A yellow gold1 bezel is crisp and brilliant next to the gem, and the diamond accents bring a beautiful sparkle and draw the color of out of this unique stone. This unique gem has the most beautiful sage/gray-green coloring, and an amazing translucency that gives this gem the look of a beautiful jellyfish, captured in a frame.

Metal: 18K Yellow Gold
Gem: Cat's Eye Sillimanite 5.21 Carats
Gem Measurements: 12.3 mm, Round
Accents: 3 Diamonds totaling .12 Carats, VS in Clarity, G-H in Color
Width of Chain: 1.9 mm
Length of Chain: 16 1/2 Inches
Marks: “750” Stamped on the clasp


  • We offer sizing on most of our rings.
  • If the ring is an eternity band, has a continuous pattern, or if the ring has to change more than 3 sizes, please contact us so we can be sure it’s possible. 
  • Upon checkout, please make note of the size you need your ring order to be.
  • Sizing typically takes 5-7 days before the item is shipped. 
  • Any rings over $1,000, we size for free.  If the ring is under $1,000, please contact us and we’re happy to quote you for the sizing, or we can invoice you after the purchase.  Sizing a ring down in size is typically $18.00 for items purchased through us.  Sizing up is $18.00 plus the cost of any additional materials.

Returns & Exchanges

  • If you receive an item and decide it’s not what you had in mind, you can return it for a full refund within 10 days.  The 10 day refund period begins the day you sign for the package. 
  • We also offer a 30 day store credit/exchange policy for any item in the store.  
  • Items purchased through our payment or layaway plans are eligible for store credit/exchange returns only.  Refunds will not be given for items purchased through layaway.


  • Most items will be shipped using USPS Express or Priority mail, with tracking, signature and insurance.  
  • Fedex is available upon request and for an additional fee.
  • Please allow us a 3-7 business day processing time after you complete your order.
  • Custom orders, including semi-mounts, take 2-3 weeks production time before shipment.
  • After shipment, packages within the US should arrive within 1-3 business days.
  • International shipments should arrive within 7-14 days.
  • Please contact us directly if you require an order within a specific deadline and we will do our best to accommodate you.


  • Contact us to set up your layaway plan
  • Layaway is available on all of the items we sell online.
  • Typically layaway plans are four payments spread out over the course of four months.

Have a question?  Please send us an inquiry through our contact page or give us a call at 603-343-2705.