Gemma Solitaire Engagement Ring

$1 Lifetime Warranty


The Gemma is a sophisticated eco-conscious engagement ring, enhanced by an infinity-inspired design and one intertwined row of glittering lab-grown diamonds. Your ethical lab-grown center stone will be elevated and supported by four prongs to ensure maximum light exposure for unparalleled brilliance. 

As 10th generation jewelers, we make shopping for an engagement ring an enjoyable experience. For just $1.00, add on a lifetime of service coverage, and see below on how we hand select the perfect diamond for you.  

Diamond Selection Process

Trust our expertise to hand-select your diamond based on your desired 4Cs category in order to make shopping easy and enjoyable. See which category best describes your goals:

  • Select: With a color grade of I and a clarity grade of SI1, Select is a wonderful choice for those looking for a respectable diamond at a great value in order to maximize your budget.
  • Signature: With a color grade of either G or H and a clarity grade of either VS1 or VS2, Signature is a fabulous choice for those seeking a finer diamond.
  • Black Label: With a color grade of F+ and VVS2+, Black Label is an exquisite choice for those looking for a diamond without compromise.

See the chart below for our Select, Signature, and Black Label diamond quality categories. We hand select each and every diamond only after it passes our complete and meticulous inspection by our GIA gemologists.




Black Label


No less than the minimum carat weight you selected

No less than the minimum carat weight you selected

No less than the minimum carat weight you select


Near-Colorless = I

Near-Colorless = G-H

Colorless = D, E, F


Slightly Included


Very Slightly Included 


Very Very Slightly Included



Excellent to Very Good 

Excellent to Very Good 

Excellent to Very Good 

All lab-grown diamonds come certified with a Grading Report. 

Looking for a diamond outside of these parameters? Contact us here.

Tech Specs 

  • Designed & Handcrafted in USA
    • 3.21g (18k)
    • 4.34g (Plat)
    • APPROX. BAND WIDTH: 1.4mm - 2.5mm
    • Approximations based on a size 6 ring. Product renders pictured with 1.00 CT center stone.  

      What's Included With My Purchase?

      • Keepsake Luxury Box & Soha Diamond Co. ring box
      • Diamond Grading Report
      • Diamond Dazzle Stik (to clean your diamond)
      • Polishing Cloth (to polish the metal)

      If you choose to select the $1.00 Lifetime Service Plan, you'll also receive full coverage for:

      • Damage from wear and tear
      • Damage from manufacturing defects
      • Bent, broken, or worn prongs
      • Cracked, broken or missing accent stones
      • Ring Resizing
      • Cracked or broken shank
      • No shipping costs

      If you do not select the $1.00 Lifetime Service Plan, we can still provide service on an a la carte basis for repair or maintenance issues. Please inquire for these fees.

      What's my ring size?

      If the original ring sizing is a little off, don't worry! With our Lifetime Service Plan, you are covered for a resizing. 

      If you are unsure of your or your partner's ring size, you can request a free plastic ring sizer by emailing us your address, and we will mail one to you. Alternatively, visit our Printable Ring Sizer page to download and print a ring sizer instantly.  
      If you'd like to see what a certain diamond shape or carat size will look like on your hand, please check out our Virtual Ring Try-On here

      Why Choose Soha Diamond Co.?

      Soha Diamond Co. was founded by a 10th Generation Jeweler and Graduate Gemologist, whose last name means "Family of Jewelers." We take the business of family very seriously, and take great care in listing only the best jewelry and diamonds fit for our loved ones. Some other things you can expect from us:

      • The only diamonds we sell are grown above-ground, right down to the tiny side stones. This is important to us, as we believe the only truly conflict-free, blood-free diamond is a lab-grown one. It is also much more friendly to the environment, human rights and wildlife. 
      • We only sell diamonds that are colorless to near-colorless (D-I) and a clarity at SI1 or above. Please click here for more information on the 4 C's of Diamonds. 
      • All of our precious metals (gold, silver and platinum) are 100% recycled. This is important to us, because mining for new gold causes great strain to the environment.
      • Why Lab-Grown Diamonds?
        • Chemically, physically, and optically identical to mined diamonds
        • Lab-grown diamonds are absolutely, 100% conflict and blood free.
        • Lab-grown diamonds are typically more cost-effective than a comparable mined diamond, which means you can get a bigger, better diamond, or opt to save money.
        • Lastly, lab-grown diamonds are among the purest diamond on earth; type IIa. Only 2% of mined diamonds are of this quality. Click here to learn more about our lab-grown diamonds!

      Looking for something Custom?

      While we have our collections to browse and buy online, we are a fully-fledged custom design jeweler. Contact us to get started on your piece, whether it's completely from scratch, or making a small change to one of our existing pieces.

      Timeline, Shipping & Returns

      • Our jewelry is hand-crafted upon order, and it begins once an order is placed and processed. Your ring will take up to 4 weeks to make, and once completed, will ship via insured, adult-signature required 2-Day Air. For more information on shipping and rates, please click here.
      • All of our engagement rings and wedding bands are handcrafted here in the USA with the highest standards to each individual’s specifications and guaranteed against manufacturing defects. We want you to absolutely love your custom ring! However, if you need to return or exchange it, you may do so within 30 days of purchase for store credit. Please see here for our full return policy.
      • Because of their personalized nature, engraved items are not eligible for returns. 

      How to Care for your jewelry

      Fine jewelry is not indestructible (even diamonds!) and your handcrafted Soha Diamond Co. jewelry should be treated with care. Over time, wear and tear of normal daily activities can cause scratches to the metal, loosening of the prongs, potential dings on the ring, etc. This is to be expected over time and are not due to poor workmanship. 
      Following the tips below should help to reduce the amount you'll need to clean your jewelry, and will also help to keep your jewelry looking as sparkling and radiant as possible:

      • Remove your jewelry before any contact sports as it could cause harm to the jewelry and potentially to others, as well. 
      • Remove jewelry before bathing or swimming. Chlorinated water can potentially cause color changes and/or structural changes to the jewelry. Soap can also cause a film on the diamond or jewelry which will make it appear dull. As a precaution, remove jewelry before entering any bodies of fresh water as well. It may cause the ring or jewelry to become loose, and potentially, lost. 
      • Put on any makeup and/or perfume after you put on your jewelry. Otherwise, these items, whether airborne or on your fingers, could cause buildup or damage. The same goes for lotion, so take care when applying. 
      • Remove jewelry when doing household tasks such as washing dishes, gardening or washing the car. This will help to prevent the jewelry to come in contact with chemicals.
      • While we do provide a Diamond Dazzle Stik to clean your diamond, you can also keep it clean by soaking your ring in warm water and a mild dish soap. Do not use any household items like toothpaste or bleach, as these are abrasive to jewelry.

      We offer a $1.00 Lifetime Service Plan on select diamond engagement rings, which covers damage due to wear and tear, defects and more! Click to learn more. 

        A different way to diamond


        Contact us and we'll help find what you're looking for.