1930s Platinum 0.50 CTW VS1 Transitional Cut Diamond Trilogy Engagement Ring
1930s Platinum 0.50 CTW VS1 Transitional Cut Diamond Trilogy Engagement Ring
1930s Platinum 0.50 CTW VS1 Transitional Cut Diamond Trilogy Engagement Ring
1930s Platinum 0.50 CTW VS1 Transitional Cut Diamond Trilogy Engagement Ring
1930s Platinum 0.50 CTW VS1 Transitional Cut Diamond Trilogy Engagement Ring
1930s Platinum 0.50 CTW VS1 Transitional Cut Diamond Trilogy Engagement Ring
1930s Platinum 0.50 CTW VS1 Transitional Cut Diamond Trilogy Engagement Ring
1930s Platinum 0.50 CTW VS1 Transitional Cut Diamond Trilogy Engagement Ring
1930s Platinum 0.50 CTW VS1 Transitional Cut Diamond Trilogy Engagement Ring
1930s Platinum 0.50 CTW VS1 Transitional Cut Diamond Trilogy Engagement Ring
1930s Platinum 0.50 CTW VS1 Transitional Cut Diamond Trilogy Engagement Ring
1930s Platinum 0.50 CTW VS1 Transitional Cut Diamond Trilogy Engagement Ring


1930s Platinum 0.50 CTW VS1 Transitional Cut Diamond Trilogy Engagement Ring

Valued at$0.00
Shipping calculated at checkout.
  • Unique find! Only 1 available.

  • Shopping pre-owned is choosing sustainable luxury
  • One-of-a-kind item exclusively curated for you
  • Ships with full insurance + signature confirmation

General Information:

  • US Size: 6.25-6.375 and sizable by your jeweler post-purchase if so needed
  • Total Carat Weight: 0.50 ctw
  • Total Precious Metal Weight: 2.12 dwt
  • Precious Metal Material: Platinum throughout
  • Dimensions: The center stone mounting measures 5.70 mm north to south x ~11.10 mm east to west (from the outer perimeter of one side diamond setting to the other) with a 5.35 mm rise from the finger at the center; the shoulders taper from 3.90 mm north to south (width) at the side diamond settings to 1.35 mm at the base of the shank.
  • Weight: 3.29 grams
  • Markings: The interior of the shank is marked "10% IRID PLAT"
  • Era: This ring dates to the late 1930s, at the height of the Art Moderne movement as it evolved into the Pre-World War II and Pre-Mid Century period. This ring's platinum fabrication assists in dating it to the years preceding WWII, as platinum was reserved strictly for the war effort by the onset of the Second World War. Likewise, its stylistic characteristics, including its squared primary mounting and ultra refined sensibility are exemplary design tenets of the Art Moderne movement.
  • Valuation: Upon procurement by the shop, comparable market research concludes an average market value for this ring of $5,018.81. This is not a formal, written appraisal, but may be helpful for prospective buyers considering their purchase.


  • Center Stone Type: Diamond
  • Center Stone Count: One (1)
  • Center Stone Carat Weight:  0.244 ct
  • Center Stone Dimension:  4.90-4.92 mm, as measured within the setting as the mounting permits
  • Center Stone Shape: Transitional Cut (the GIA classifies this cut as a Circular Brilliant cut. Please read more about this unique faceting type below)
  • Center Stone Color:  I-J
  • Center Stone Clarity: VS1-VS2
  • Side Stone Type: Diamond
  • Side Stone Count: Two (2)
  • Side Stone Carat Weight: 0.06 ctw; 0.03 ct each
  • Side Stone Dimension: Approx. 1.90-2.00 mm
  • Side Stone Shape: Antique Single Cut
  • Side Stone Color:  H-I
  • Side Stone Clarity: VS1-VS2

The Story:

Quintessentially classic in every way, this engagement ring hails from the end of the 1930s. Though its design is simple, every element is perfectly representative of the period in which it was made, embodying tenets of both the Art Deco and Art Moderne movements. Both movements celebrated angularity and the basic geometries, two pillars that can be clearly appreciated in this ring. As was true of fashion, architecture, furnishings and décor of these movements, this ring's ornamentation is intentional and delicately thoughtful. 

The central diamond is mounted within four corner prongs shaped like rounded letter "v's" that are reminiscent of stylized hearts. This mounting style surged in popularity by the late 30s and into the 40s, with variations continuing to be in demand well into the Mid Century designs of the 1950s. The effect is something of an illusion, adding complementary grandeur and visual heft to the central diamond without overpowering its show-stopping beauty. When viewed in profile, one can see that these corner prongs carefully incline inwards to, together, create the petal-like basket that houses the diamond's depth.

Flanking the 0.44 ct Transitional diamond are a pair of dainty accent diamonds that are simpler in cut but equally clear and sparkly. They are bead-prong set within almond mountings which are oriented portrait-style and designed to give the sleek impression of bezel settings. Well worth a closer look, these settings actually harken to the simplicity of a tulip's silhouette when turned ninety degrees: three tiny triangular forms dot the small settings and point toward the center stone, the middle of these forms acting as buttresses of the center mounting. These details offer a quiet nod to the springtime bloom, which often symbolizes humility and grace. According to one 19th century edition of the Language of Flowers, tulips represent a declaration of hopeless love, poetically noting that tulip petals are extraordinary in that no two are exactly alike, and it is this precise nature of uniqueness that speaks to every couple's love story.

The featured diamond is of superior quality, and its color and clarity are intensely desirable to collectors and make this ring an ideal investment piece. Both Old European and Transitional cuts are becoming more and more difficult to find, as many are either being purchased by collectors and/or repurposed or recut by machine into other, contemporary jewelries. This diamond is classified as a Transitional Cut (classified by the GIA as an early Circular Brilliant Cut), and to find an old cut that is this lovely is incredibly rare, and highly sought after.

This diamond's cut represents a very, very brief window of time between the late 1920s and the early 1930s (please be aware that this time range is sometimes debated) when diamond cutters began transitioning from the chunky height of Old European Cut diamonds of the 1890s-1910s to the lower-profile/sleeker spread of Modern Round Brilliant Cut diamonds of the 1940s through today. This diamond is one that survived this sliver of time that was so extremely pivotal to jewelry history. It boasts the chunkiness that is coveted of antique hand-faceted diamonds, in which every facet is broad and wide in geometry creating a dazzling flash that modern stone cuts simply do not possess.

On calculating the carat weight: This ring was sold to the shop as being roughly 0.39 ct. However, this estimations are low and incorrect because it was calculated according to the formula for Modern Round Brilliant (MRB) cut diamonds, and using the spread of the diamond (how wide it measures head-on) to determine a corresponding carat weight. The MRB formula is perfectly appropriate for modern diamond cuts, produced from the late 1940s/1950s, on. But, the MRB formula does not take into consideration the substantial heft of the faceting system of historic Transitional/Early Circular Brilliant diamonds-- of which this diamond is one.

Therefore, we calculate this diamond using the historic formula which takes into consideration the proportions and ratios of historic cuts, including the roughly proportionately smaller table, the medium culet at the base of the diamond, the pavilion's length of 65% or smaller and the internal star length of 50% or smaller. Using the historic-- and inherently more appropriate-- formula, we estimate that this center diamond is actually between 0.42 and 0.46 carat weight, for an average weight estimate of 0.44 ct.

Please kindly keep in mind that different jewelers, different dealers and different appraisers vary in the formula they use to determine the carat weight of a diamond. In order to provide our shoppers with the truest carat weight that we can, we use the most appropriate formula according to the exact cut of the stone present.

By placing an order, you accept and agree to uphold all of Revival Fine Jewelry's terms, conditions and policies.

General Information: All additional jewelry boxes, ring boxes, and other jewelry items pictured alongside a featured listing are considered props, are for photographic and display purposes only and are not included in the transaction unless otherwise noted. Items do not come with physical documentation, appraisals, or certifications, unless explicitly stated in the item description and/or title. While jewelry is inspected upon procurement by the shop as well as prior to shipment, Revival Fine Jewelry cannot guarantee a warranty once items leave our inventory, given the delicate and individual nature of secondhand articles and the unaccountability of buyer handling post-purchase.

Shipping: All orders are carefully packed within a branded Revival Fine Jewelry gift box, secured with recycled materials when possible, and shipped within a discreet outer shipping parcel. All orders ship with tracking, insurance and signature confirmation. Shipping options are presented at checkout. Per law and inegrity, international orders are always marked as commodity imports and customers are responsible for any and all customs expenses, VAT taxes and import fees, as well as any clearance costs legally dictated by their respective destination countries. These expenses are not calculated into the pricing structure, and returns based on import costs will not be permitted.

Returns: While Revival Fine Jewelry aims to provide a smooth experience from start to finish, customers are encouraged to reach out regarding any issue or dissatisfaction, so that we may work together toward a resolution. If a return is desired, the shop must be notified of an intention to return within 3 days of confirmed delivery, and item(s) must be shipped back to the shop within 7 days of confirmed delivery. All materials (gift box, inserts, cards) must be returned with the item(s). Returns declared after the 3 day window and/or postmarked after 7 days of receipt will neither be accepted nor refunded. Customers are responsible for generating an insured return shipping label (international customers included) and relaying the tracking information to Revival Fine Jewelry. Returns that do not include full insurance and/or tracking, and are damaged or lost in transit, will not be refunded. If a return is accepted, customers will be refunded less the original cost of shipping, handling and insurance, the expense of any damages incurred, and a 10% restocking fee (of the original purchase price). All sale items, items altered or resized by the buyer post-purchase, and all storage/ boxes are considered final sale and are ineligible for a return or refund.

Sale Terms: Sale prices are only valid within the prescribed sale window, unless otherwise stated by Revival Fine Jewelry or agreed upon between Revival Fine Jewelry and a designated customer. To maintain business sustainability and general fairness, individual customers are not entitled to exclusive notification of, or owed access to, store sales antecedently. Orders processed prior to a promotion or sale, items placed on layaway prior to a sale, and payments paid through layaway prior to a sale will not be retroactively adjusted to reflect sale pricing or terms.

Specially Negotiated Deals: Items purchased at specially negotiated discounts, deals or prices through any platform between Revival Fine Jewelry and a designated customer are considered final sale, including rates arranged and agreed upon via Facebook, Instagram, email or any other method. Closing deals at special rates reflects a desire by both parties to reach an expeditious and absolute sale. The intention of specially negotiated discounts, deals or sale prices through any platform between Revival Fine Jewelry and a designated customer, is to eliminate extra expenses and/or use of time and resources to formally list or re-list items per their specific and inherent value-determining qualities, as well as avoid unseen overhead business costs, stocking obligations, and all other disclosed or undisclosed monetary and nonmonetary expenditures.

Pricing: Revival Fine Jewelry reserves the right to decrease, increase, alter and modify inventory pricing to meet market rarity, demand or value; to offset platform, transaction or seller's fees; to adapt to economic inflation and fluctuation; and to defray specific business expenses. Pricing is the sole discretion of every small business.

Regarding Brooches & Pins: Often significantly and curiously undervalued jewelry items, brooches, pins and stick pins are treasured pieces of history in this shop. Accordingly, their pricing is calculated analogous to other fine jewelry, including their symbolic meaning, rarity and historical prestige. Such pieces are typically converted to other forms of jewelry, and are therefore becoming increasingly rare in their original states. Aside from being perfectly wearable as sophisticated lapel ornaments, brooches and pins of all kinds are prime candidates for many kinds of fine jewelry conversions, including rings, earrings, pendants, and charms, if so desired by the consumer post-purchase. Revival Fine Jewelry does not perform conversion projects for customers.

Regarding Storage & Boxes: All specifications, including but not limited to the measurements, age, origins, and material compositions are supplied in good faith as professional estimations constructed using professional grade tools, years of learned and honed skills, educational resources and academic scholarship, and refined research methods. Regardless of our confidence in our descriptions and the photographs deemed viable extensions of these descriptions, we cannot guarantee the definitiveness, faultlessness, or exactitude beyond our knowledge and expertise. Kindly keep in mind that this and all items are sold as-is vintage, antique and estate secondhand wares, and consequently bear conditional wear in matter and operation commensurate with age and use.

More information on these, and more, topics may be found in the shop policies.

All layaway terms may be found here, and all shop policies may be found here.

Layaway is available for full priced, non-sale items priced $600.00 USD or greater, and items may not be combined to attain price-eligibility. Plans are offered as 3-month/90-day maximum terms.

In exchange for offering interest-free plans, customers agree to abide and uphold the following nonnegotiable terms and conditions:

  • A 30% deposit is due upfront to reserve the item for layaway and pull it from public sale on all of our shopping platforms. Shipping expenses are added to this first payment unless otherwise requested.
  • The remaining 70% balance is divided up into three subsequent monthly payments due on the same day of the following three months. If delinquent, a $20.00 USD late fee is added per day to an overdue payment until paid.
  • In the event that a layaway installment is left unpaid for seven (7) days and no communication is received from the designated customer, the layaway plan will be presumed abandoned. While the item will be returned to public sale, all payments made hitherto are still considered final.

Layaway items are promptly boxed and shipped to the designated customer once the final payment successfully processes. Taxes, import and other legal fees are not calculated into the payments, and are the sole responsibility of the customer, whether a domestic US or international buyer. Revival Fine Jewelry is not responsible for calculating, covering or adding such costs into purchase prices.

All layaway payments as well as all items purchased through layaway plans are considered final sale; neither payments nor items may be refunded, transferred, exchanged or returned. Revival Fine Jewelry does not issue store credit.

Revival Fine Jewelry reserves the right to cancel any layaway plan at any point for any reason if fraudulent activity is suspected. In this event, the designated customer will be notified prior to the intended cancellation of their plan.

Request a layaway plan via email here. Remember to specify your desired item by providing its link, title or SKU/code.