5.79 Carat Tanzanite Oval - 12.6x9.3mm - Esko Universe Cut ®
5.79 Carat Tanzanite Oval - 12.6x9.3mm - Esko Universe Cut ®
5.79 Carat Tanzanite Oval - 12.6x9.3mm - Esko Universe Cut ®
5.79 Carat Tanzanite Oval - 12.6x9.3mm - Esko Universe Cut ®
5.79 Carat Tanzanite Oval - 12.6x9.3mm - Esko Universe Cut ®
5.79 Carat Tanzanite Oval - 12.6x9.3mm - Esko Universe Cut ®
5.79 Carat Tanzanite Oval - 12.6x9.3mm - Esko Universe Cut ®
5.79 Carat Tanzanite Oval - 12.6x9.3mm - Esko Universe Cut ®
5.79 Carat Tanzanite Oval - 12.6x9.3mm - Esko Universe Cut ®

5.79 Carat Tanzanite Oval - 12.6x9.3mm - Esko Universe Cut ®

Regular price$8,995.00
/
Shipping calculated at checkout.

This site is protected by hCaptcha and the hCaptcha Privacy Policy and Terms of Service apply.

This listing is for the depicted gemstone. It can be purchased loose or bundled for a custom jewelry project

• 5.79 carats
• 12.64mm in length, 9.3mm in width, and 7.5mm in depth 
• Cut in my bespoke Esko Universe Cut ® pattern, this stone features my oval design
• Uncut gem sourced from Tanzania 
• unheated/untreated
• Eye Clean
• Medium/medium light tone
• Choice Plus Gemstone! 

- Check out my portfolio of settings for ring setting ideas

So what color is this gem? In most lighting, you can expect a blue/purple and yellow gemstone.  With more sunlight or a blue sky you can expect the blue and purple hues to dominate. In more passive lighting or with an overcast, you will see the yellow and green/blue. It's a stunning tanzanite. One-Of-A-Kind. Two inclusions are visible under magnification. The yellow hue is a visible indicator that this gem has not undergone any color enhancements or heat treatment.  Choice Plus Gemstone. Milestone Celebration worthy piece, it's a super sparkler. If your willing to wait for it, a GIA lab report is complimentary with this purchase. 

If you want first pick of any new gems, be sure to sign up for my new gem e-mail list (signup is on the homepage)! 


2.9 carat Sunset Tourmaline Rectangular Octagon - 9.7x7.3mm - Esko Universe Cut ™
2.9 carat Sunset Tourmaline Rectangular Octagon - 9.7x7.3mm - Esko Universe Cut ™
2.9 carat Sunset Tourmaline Rectangular Octagon - 9.7x7.3mm - Esko Universe Cut ™
2.9 carat Sunset Tourmaline Rectangular Octagon - 9.7x7.3mm - Esko Universe Cut ™
2.9 carat Sunset Tourmaline Rectangular Octagon - 9.7x7.3mm - Esko Universe Cut ™
2.9 carat Sunset Tourmaline Rectangular Octagon - 9.7x7.3mm - Esko Universe Cut ™
2.9 carat Sunset Tourmaline Rectangular Octagon - 9.7x7.3mm - Esko Universe Cut ™
2.9 carat Sunset Tourmaline Rectangular Octagon - 9.7x7.3mm - Esko Universe Cut ™
2.9 carat Sunset Tourmaline Rectangular Octagon - 9.7x7.3mm - Esko Universe Cut ™

2.9 carat Sunset Tourmaline Rectangular Octagon - 9.7x7.3mm - Esko Universe Cut ™

Regular price$2,995.00
/
Shipping calculated at checkout.

This listing is for the depicted gemstone. It can be purchased loose or can be reserved or bundled for a custom jewelry project

• 2.9 carats 
• 9.79mm in length, 7.32, and 6.3mm in depth 
• Cut in my bespoke Esko Universe Cut ™ pattern, this stone features my contemporary rectangular octagonal shape
• Uncut gem sourced from Nigeria
• Untreated
• Eye Clean!
• Medium tone
• Choice Plus Gemstone!

- Check out my portfolio of settings for ring setting ideas

An absolute firecracker. A very pretty color gradient from reddish pink to yellow. Open Toned & Eye clean.  Choice Plus! 

If you want first pick of any new gems, be sure to sign up for my new gem e-mail list (signup is on the homepage)! 

This site is protected by hCaptcha and the hCaptcha Privacy Policy and Terms of Service apply.


2 Carat Aqua Sapphire Princess Cut - 5.9x8.3mm - Esko Universe Cut ™
2 Carat Aqua Sapphire Princess Cut - 5.9x8.3mm - Esko Universe Cut ™
2 Carat Aqua Sapphire Princess Cut - 5.9x8.3mm - Esko Universe Cut ™
2 Carat Aqua Sapphire Princess Cut - 5.9x8.3mm - Esko Universe Cut ™
2 Carat Aqua Sapphire Princess Cut - 5.9x8.3mm - Esko Universe Cut ™
2 Carat Aqua Sapphire Princess Cut - 5.9x8.3mm - Esko Universe Cut ™
2 Carat Aqua Sapphire Princess Cut - 5.9x8.3mm - Esko Universe Cut ™
2 Carat Aqua Sapphire Princess Cut - 5.9x8.3mm - Esko Universe Cut ™
2 Carat Aqua Sapphire Princess Cut - 5.9x8.3mm - Esko Universe Cut ™ Indoor Video

2 Carat Aqua Sapphire Princess Cut - 5.9x8.3mm - Esko Universe Cut ™

Regular price$3,495.00
/
Shipping calculated at checkout.

This listing is for the depicted gemstone. It can be purchased loose or reserved for a custom jewelry project

• 2 carats 
• 5.97mm from flat to flat, 8.3mm from corner to corner, and 5.2mm in depth 
• Cut in my bespoke Esko Universe Cut ™ pattern, this stone features my contemporary princess square design
• Uncut gem sourced from Tanzania
• Untreated
• Slight Inclusions Visible
• MediumLight Tone
• Choice Gemstone!

- Check out my portfolio of settings for ring setting ideas

Perfect squares in my line of work almost never happen; this will likely be the only princess cut all year, and a very nice one at that. I would describe this as an aquamarine color, with a very slight visible bicolor in daylight between aqua and teal. Indoors, it assumes a more green appearance. Slight inclusions visible but not dominant. This is a Choice Gemstone! 

If you want first pick of any new gems, be sure to sign up for my new gem e-mail list (signup is on the homepage)! 


6x1mm Branches and Leaves Ring 14kt Yellow Gold Bright Cut Engraved Band
6x1mm Branches and Leaves Ring 14kt Yellow Gold Bright Cut Engraved Band
6x1mm Branches and Leaves Ring 14kt Yellow Gold Bright Cut Engraved Band

6x1mm Branches and Leaves Ring 14kt Yellow Gold Bright Cut Engraved Band

Regular price$1,995.00
/
Shipping calculated at checkout.

This listing is for the depicted gold ring made to order in your size with a matte surface finish and a bright cut engraving

• The ring band is 6 mm in width and 1 mm in thickness

- Its low profile with smooth interior edges and relatively lightweight. I can make this same design in thicker or wider and thicker bands upon request.

• I bright cut the design by hand

• This ring is made to order. Send us an email to inquire about the current wait time or cost of a rush production

• I personally custom make all of my jewelry in my workshop in Great Barrington, Massachusetts

This site is protected by hCaptcha and the hCaptcha Privacy Policy and Terms of Service apply.

Material


HOW TO ORDER

For "One-of-a-Kind" I have a selection of unique and notable gemstones on my Available Gemstones page that I have personally faceted from rare and unusual rough gem materials. I can custom make a setting to fit or you can purchase a gem loose. This selection is frequently changing, I try to add at least two new gems a week. I have a selection of pre-priced settings on my Customizable settings page for your convenience. I can also make a setting to your own specifications. I'm currently expanding my Ready To Ship Jewelry section with pre-made gold and platinum gemstone rings for those on a tighter timeline.

You can also browse my Gem Archive and see all the gems I have faceted over the years for inspiration. I have a large and well documented portfolio of past gem works.

I have a selection of "Made to Order" Gemstone and Diamond Rings as well as Ring Bands. I can make these items identical or near identical to the depicted ring in the listing photos.

How can I be notified when new gems are listed?
I recommend signing up for my Gem Notification E-mail List (above). I don't post every gem to social media anymore so your best bet to have first pick will be to opt in to this list. If you are on Instagram you can set notifications for my reels & posts. You can follow my Facebook and Instagram pages here:
Link to my Instagram here and my Facebook here.

Diamond Rose Gold Hand Made Vintage Engagement Ring Set - Marquise Ring - Leaf Sennin Esko Jewelry Alternative Engag, Bezel ring, Conflict Free Ring, Diamond Alternative, Diamond Bezel Eng, Diamond G FINE RINGS / ENGAGEMENT
Diamond Rose Gold Hand Made Vintage Engagement Ring Set - Marquise Ring - Leaf Sennin Esko Jewelry Alternative Engag, Bezel ring, Conflict Free Ring, Diamond Alternative, Diamond Bezel Eng, Diamond G FINE RINGS / ENGAGEMENT
Diamond Rose Gold Hand Made Vintage Engagement Ring Set - Marquise Ring - Leaf
Diamond Rose Gold Hand Made Vintage Engagement Ring Set - Marquise Ring - Leaf Sennin Esko Jewelry Alternative Engag, Bezel ring, Conflict Free Ring, Diamond Alternative, Diamond Bezel Eng, Diamond G FINE RINGS / ENGAGEMENT
Diamond Rose Gold Hand Made Vintage Engagement Ring Set - Marquise Ring - Leaf
Diamond Rose Gold Hand Made Vintage Engagement Ring Set - Marquise Ring - Leaf Sennin Esko Jewelry Alternative Engag, Bezel ring, Conflict Free Ring, Diamond Alternative, Diamond Bezel Eng, Diamond G FINE RINGS / ENGAGEMENT
Diamond Rose Gold Hand Made Vintage Engagement Ring Set - Marquise Ring - Leaf
Diamond Rose Gold Hand Made Vintage Engagement Ring Set - Marquise Ring - Leaf Sennin Esko Jewelry Alternative Engag, Bezel ring, Conflict Free Ring, Diamond Alternative, Diamond Bezel Eng, Diamond G FINE RINGS / ENGAGEMENT
Diamond Rose Gold Hand Made Vintage Engagement Ring Set - Marquise Ring - Leaf
Diamond Rose Gold Hand Made Vintage Engagement Ring Set - Marquise Ring - Leaf Sennin Esko Jewelry Alternative Engag, Bezel ring, Conflict Free Ring, Diamond Alternative, Diamond Bezel Eng, Diamond G FINE RINGS / ENGAGEMENT
Diamond Rose Gold Hand Made Vintage Engagement Ring Set - Marquise Ring - Leaf Sennin Esko Jewelry Alternative Engag, Bezel ring, Conflict Free Ring, Diamond Alternative, Diamond Bezel Eng, Diamond G FINE RINGS / ENGAGEMENT
Diamond Rose Gold Hand Made Vintage Engagement Ring Set - Marquise Ring - Leaf Sennin Esko Jewelry Alternative Engag, Bezel ring, Conflict Free Ring, Diamond Alternative, Diamond Bezel Eng, Diamond G FINE RINGS / ENGAGEMENT
Diamond Rose Gold Hand Made Vintage Engagement Ring Set - Marquise Ring - Leaf Sennin Esko Jewelry Alternative Engag, Bezel ring, Conflict Free Ring, Diamond Alternative, Diamond Bezel Eng, Diamond G FINE RINGS / ENGAGEMENT
Diamond Rose Gold Hand Made Vintage Engagement Ring Set - Marquise Ring - Leaf Sennin Esko Jewelry Alternative Engag, Bezel ring, Conflict Free Ring, Diamond Alternative, Diamond Bezel Eng, Diamond G FINE RINGS / ENGAGEMENT
Diamond Rose Gold Hand Made Vintage Engagement Ring Set - Marquise Ring - Leaf Sennin Esko Jewelry Alternative Engag, Bezel ring, Conflict Free Ring, Diamond Alternative, Diamond Bezel Eng, Diamond G FINE RINGS / ENGAGEMENT
Diamond Rose Gold Hand Made Vintage Engagement Ring Set - Marquise Ring - Leaf
Diamond Rose Gold Hand Made Vintage Engagement Ring Set - Marquise Ring - Leaf
Diamond Rose Gold Hand Made Vintage Engagement Ring Set - Marquise Ring - Leaf

Diamond Rose Gold Hand Made Vintage Engagement Ring Set - Marquise Ring - Leaf

This site is protected by hCaptcha and the hCaptcha Privacy Policy and Terms of Service apply.

Regular price$9,995.00
/
Shipping calculated at checkout.
Diamond Rose Gold Hand Made Vintage Engagement Ring - Marquise Ring - Leaf Engagement Ring - Diamond Ring - Diamond Bezel Ring

This listing is for both rings, the diamond ring and the fitted wraparound band

• The center setting on the depicted ring is 9x5.5 mm in diameter. I will pick a VS clarity diamond that is closest to the listed dimensions and weight depending on what is currently available from the cutter. I pick to please!

• You will get a conflict-free VS2- VS1 Clarity diamond that is in-between 0.48-0.55 carats in weight. Exact specs will depend on what is currently available from the diamond cutter. The diamond will come with a GIA (Gemological Institute of America) grading report. A GIA serial laser inscription is available upon request, however, it won't be visible once set in the bezel. A laser inscription may add another week or two to the production time of this ring.

- I will contact you with some choices based on what is currently available

- The ring also features 2x 0.04 ct VS brilliant-cut round accent diamonds.

*Please note* I do not deal in laser-drilled, irradiated or fracture-filled diamonds. All are mined & processed in compliance with
United Nations resolutions prohibiting trade in conflict stones.

*This ring is not sizeable! If you are located within the US I will send you a free set of steel ring gauges to verify your ring size upon placing your order. They are free and you do not have to return them and they will not extend your production time. International buyers, please contact me for details on sizing prior to placing your order. Sizing it means remaking it completely and there is a $200 sizing fee for this ring.

• Made in Choice of 14 kt yellow, rose, white or 18kt white gold

• I custom make this item to order

• Ring sizing is free for most rings

• I personally hand make all of my jewelry in my workshop in Great Barrington, Massachusetts

• This ring can be engraved with a personalized message or date.  Engraving is free, simply leave me a note at checkout with your requested text and or dates or feel free to reach out to me directly.
- Only the narrow font will fit on this ring
Material


Customer Reviews

Overall rating: 5 / 5 from 391 reviews.

Customer photo review of 0.75 Carat Peachy Pink Tourmaline Marquise - 7.4x3.9mm - Esko Universe Cut ™

Purchase was smooth as can be, shipped safe and secure. Really appreciate the attention to detail in the packaging and what was included, and of course love love love the gem! As bright and lovely in person as in photos/videos. Really happy to be able to add one of these beauties to my collection!

0.75 Carat Peachy Pink Tourmaline Marquise - 7.4x3.9mm - Esko Universe Cut ™

Customer photo review of 0.71 Carat Canary Yellow Sapphire - 5.8x4.9mm - Esko Universe Cut ™

Beautiful stone, beautifully cut. I got it set in 18 carat yellow gold and it looks stunning. The light breaks in a spectrum from gold-ish yellow to a bright green depending on the light source and angle. Shipping and contact were super smooth. Thanks!

0.71 Carat Canary Yellow Sapphire - 5.8x4.9mm - Esko Universe Cut ™

Customer photo review of Custom Listing - 1.2 Carat Sapphire Inline Channel Ring Set

Stunning! Well worth the wait. Its even more exquisite in the sunlight. The original pictures of the stone did not do it complete justice. Brilliant color. And the setting turned out exactly how I wanted. And fits the stone shape perfectly

Custom Listing - 1.2 Carat Sapphire Inline Channel Ring Set

Customer photo review of Medium/Heavy Weight Platinum Solitaire Prong Ring Setting - Fantasy Cut Gray Spinel Depicted (Setting Only, Center Stone Sold Separately)

Sennin created a beautiful engagement ring which I used I propose to my now-fiancé! The platinum ring is well-sized, comfortable to wear, and meticulously crafted. The sapphire itself is easy to stare at and get lost in with its fantasy cut, and it's color changes between blue and purple depending on the light. Sennin was available and responsive throughout the ring-making process, sending over a bunch of preset ring sizers at the beginning, and sending draft renderings for my input for the design of the setting. Thank you Sennin for this special ring which impressed not just me and my fiancé but also everyone who sees it.

Medium/Heavy Weight Platinum Solitaire Prong Ring Setting - Fantasy Cut Gray Spinel Depicted (Setting Only, Center Stone Sold Separately)

Customer photo review of 1 Carat Icy Blue Umba Sapphire Novelty Octagon - 7.8x6.2mm

It's difficult to catch on camera just how gorgeous this stone is. The dominant color is indeed an icy blue, but the best part is watching the colors shift in different lighting and angles. The faceting perfectly compliments the shape of the stone as well. I couldn't be more happy!

1 Carat Icy Blue Umba Sapphire Novelty Octagon - 7.8x6.2mm

Customer photo review of 5x5 Colorless Moissanite Yellow Gold Bezel Ring - Forever One Moissanite

Stunning ring. Sparkles like crazy in all light. Sturdy construction, which is exactly what I wanted as this is my travel engagement ring. Will not get snagged like my pronged ring. I’m glad I went with moissanite as the rainbow sparkles are fun. Took longer than expected to arrive but I understand it’s a one-person operation, we are all only human and sometimes have hiccups in life. This is my second ring from this shop. Thank you, Sennin, for a beautiful ring.

5x5 Colorless Moissanite Yellow Gold Bezel Ring - Forever One Moissanite

Customer video review of Faceted 14kt Yellow Gold 2mm Band

The ring looked just as great in person as I had hoped. Instead of a simple gold band, I opted to get geometric facets and it makes the ring so much shinier

Faceted 14kt Yellow Gold 2mm Band

Customer photo review of Custom Listing for Jerome - Blue Sapphire Prong Set Ring in Platinum

Amazing ! I chose Sennin Esko Jewelry to create a ring for a very special occasion. Very courteous and very responsive, the experience was really pleasant. The ring is exactly as I requested. The stone is as beautiful in real life as in the photos on the site. I am really satisfied with the work done on the ring and would not hesitate to place another order. Thanks again for your work!

Custom Listing for Jerome - Blue Sapphire Prong Set Ring in Platinum

Customer photo review of Custom Listing - Tanzanite & Platinum Ring var 2

The quality of workmanship is exquisite and the piece compliments my other jewelry beautifully! Sennin walked me through this process with ease and is a top notch designer!

Custom Listing - Tanzanite & Platinum Ring var 2

Customer photo review of 14kt Yellow 6x1mm Flat Band - Matte Finish

We absolutely love our rings! When my fiance proposed I was floored at what he chose for me, it fits my style perfectly and is absolutely stunning. Everyone loves it and comments on the rose gold which is more of a copper look than a rose gold. I got my husband the rose gold band and had "I choose you" engraved on the inside - he how it fits him and his style. We are thrilled with the process and the end result. Thank you Senin!!!!

14kt Yellow 6x1mm Flat Band - Matte Finish

Customer photo review of 1.1 Carat Bluish Gray & Violet Umba Sapphire Octagonal Cushion -  Fantasy Cut - 6.5x5.6mm

I couldn’t be happier with my ring. It far exceeds my expectations; the sapphire is like a chameleon, favoring different colors in different lights, which is made all the more magical by the fantasy cut. And the simple rose gold setting that I chose allows the sapphire to be showcased without competing with it. I highly recommend this very talented gem cutter and gold smith for your next special ring.

1.1 Carat Bluish Gray & Violet Umba Sapphire Octagonal Cushion - Fantasy Cut - 6.5x5.6mm

Customer photo review of Custom Listing for Diamond - Blue Sapphire multi bezel engraved ring in 14kt rose gold

I am completely obsessed with my ring! Purchased as a self-gift for finally completing my long and arduous career training. The stone is gorgeous, like glimpsing into space as it catches and opens up under light. The ring detailing is refined and elegant. The process takes a while (especially if you request GIA certificate, fair warning) BUT 120% worth the wait. :)

Custom Listing for Diamond - Blue Sapphire multi bezel engraved ring in 14kt rose gold

Customer photo review of Comfort Fit 14kt White Gold 5x1.4mm Band - Matte Finish

Love this ring! It's the perfect size and color. Fits very comfortably. And working with Sennin was so great. He's very flexible on requests and is timely with his delivery. Highly recommend!

Comfort Fit 14kt White Gold 5x1.4mm Band - Matte Finish

Customer video review of Custom Listing for Rita - Garnet Solitaire Prong Set Ring

Sennin did such an amazing job creating this ring for me !! He was very attentive and made sure I liked the design. We went back and forth but I appreciated that so much because his number one concern was that the ring was exactly what I wanted. I absolutely love it ! I will most definitely buy from him in the future. In fact, I’m going to. I can’t wait !!

Custom Listing for Rita - Garnet Solitaire Prong Set Ring

Customer photo review of Wide Yellow Gold Band 5x1.4mm, Matte Finish , Comfortable Band - Smooth Band

Sennin did such a great job with the ring and as well as dealing with me as bridezilla. He went above and beyond to make sure it got there in time and eased all my worries. Much better than buying from a big brand company that won’t put as much time and effort into your piece.

Wide Yellow Gold Band 5x1.4mm, Matte Finish , Comfortable Band - Smooth Band

Customer photo review of Custom Listing for Krissia - 5mm Sun Engraved Yellow Gold Ring

The custom ring came out even better than expected! Such amazing service too! We needed it to arrive before a certain date and it even came in early! Cannot recommend it enough. Everyone compliments me on the beautiful ring.

Custom Listing for Krissia - 5mm Sun Engraved Yellow Gold Ring


MY GEM & JEWELRY STUDIO