Radiant Spin Akoya Saltwater Pearl Japanese Pearl Natural Pearl Gem Natural Diamond 18K White Gold Ring 75

Radiant Spin Akoya Saltwater Pearl 18K White Gold Diamond Ring "Radiant Spin" is designed with an elegant spiral as its core axis. The 18K white gold band naturally twists from bottom to top, symbolizing the trajectory of light, enveloping the quietly blooming Akoya pearl. Delicately inlaid natural diamonds adorn the band, shimmering with a subtle, ethereal glow as the light changes, like starlight faintly twinkling in a silver night sky. Simple, classic, and exuding a modern feminine charm, this is a piece of jewelry designed for elegant everyday wear. Sample shown is size 15. For other sizes, please message us for custom orders. As we are a factory that produces pearls and crafts jewelry in-house, all pearl sizes are limited. Because pearls require time for harvesting, and certain sizes may be temporarily out of stock due to harvest impacts from weather or cultivation conditions. Therefore, some styles may experience temporary stock shortages. Please inquire about stock availability before placing an order. Process: We offer a free ring sizer. As there are slight differences in the inner diameter measurements for various international and Hong Kong ring sizes, we have prepared an inner diameter ring sizer (Hong Kong size / unit mm) for customers wishing to purchase rings. You can purchase it for $1. We recommend measuring your ring size with the sizer before purchasing a ring. Alternatively, you can purchase the ring sizer and ring together. Please message us if you wish to have the ring sizer shipped first. Purchase link: https://www.pinkoi.com/product/2PwP3iVW Our pearls, depending on the variety, come from two major production areas: Japan and China. All are processed and crafted in our professional jewelry workshops in China, ensuring stable quality, exquisite craftsmanship, and the perfect display of the pearl's natural luster and charm. 🔹 Japanese Origin | Akoya Saltwater Pearls, Madama Pearls Akoya pearls are the most representative type of saltwater pearls, known as "Agoya" in Chinese. They are primarily cultivated in areas like Mie, Kumamoto, and Ehime in Japan, with the Seto Inland Sea coast being particularly renowned. Akoya pearls are nurtured by the **Pinctada fucata** oyster. Due to the oyster's small size, each shell can only produce one pearl, and it requires approximately 3 years of meticulous cultivation. Consequently, their yield is relatively scarce, and their quality and price are high. Akoya pearls are nucleated pearls, exceptionally round, with a cool, bright luster, earning them the nickname "little light bulbs" in the pearl world and making them highly favored in the high-end jewelry sector. Their surface often exhibits a natural "orange peel" texture. If a special grade is chosen (e.g., with a Japanese certificate), they are nearly flawless with a more translucent luster. Colors include Sakura pink, snow white, blue-pink, cool blue, iridescent gold, and queenly colors. There are also rare Madama colors, a variant of Akoya with a natural purplish-pink overtone, highly sought after by collectors. 🔹 Chinese Origin | Freshwater Cultured Pearls China is the world's largest producer of freshwater pearls, with production concentrated in Zhejiang, Hunan, Jiangsu, and Anhui. Freshwater pearls are mainly cultivated from large mussels like the triangle-sail mussel. A single mussel can produce tens or even 30-50 pearls simultaneously, resulting in a much higher yield than saltwater pearls. In the past decade, with significant advancements in cultivation technology and selection standards, high-quality freshwater pearls have achieved levels comparable to Akoya in roundness, nacre compactness, and luster. Although nucleated cultivation is less common, top-grade freshwater pearls can achieve near-perfect roundness, a warm and translucent luster, and strong surface glow, all at a more accessible price point. They are an excellent value choice for everyday wear and designer jewelry. Regardless of whether you choose Akoya saltwater pearls or Chinese freshwater pearls, all products are completed in our Chinese processing workshop, ensuring that every piece meets jewelry-grade standards from raw materials to craftsmanship details, adding an elegant touch to your daily life. https://live.staticflickr.com/65535/54586131810_8f2fee49cc_b.jpg (In the Pearl Grading Guide: The circled items can serve as reference standards for the pearls in our store) https://live.staticflickr.com/65535/54586035868_cf01f90df0_b.jpg https://live.staticflickr.com/65535/54585793436_ddd2e63e51_b.jpg https://live.staticflickr.com/65535/54585797431_701d282b24_b.jpg Care Recommendations: After wearing, gently wipe the pearl surface with a soft, dry cloth. Avoid direct contact with perfumes and cosmetics. Store in a velvet pouch to prevent scratches or moisture. Unsure whether to choose freshwater or Akoya pearls? Here's a comparison: I. Origin & Cultivation Akoya Pearls Akoya pearls are saltwater cultured pearls, primarily from Japan, but also cultivated in Vietnam and China. The Akoya pearl's host oyster is the Pinctada fucata, which requires a marine environment with high salinity and complex currents. Typically, one oyster yields only one pearl. Akoya cultivation cycles are relatively long, about 3-5 years. Akoya's annual output is lower, accounting for about 10% of the global total pearl production (saltwater pearls combined). Akoya was the world's first commercially produced saltwater cultured pearl, beginning in the early 1900s. Saltwater cultured pearls (including Akoya) are usually nucleated, where a spherical bead core is placed inside the host oyster. Freshwater Pearls Freshwater pearls are cultured in freshwater environments like lakes and rivers, mainly in the lakes and rivers of China's Yangtze River basin, such as Zhejiang, Hunan, and Jiangsu. The primary host oysters for freshwater pearls are species like the triangle-sail mussel, grown in stable, controllable water quality. One mussel can yield 10-40 or 30-50 pearls. Most freshwater pearls form naturally within the oyster without a bead core (primarily non-nucleated cultivation), which often results in irregular shapes. Freshwater pearl cultivation cycles are relatively short, about 1-3 years. Freshwater pearls account for the vast majority of global pearl production, about 95%. Nucleated freshwater cultured pearls are also known as "Edison" pearls. Natural pearls and non-nucleated cultured pearls are almost entirely composed of nacre. II. Appearance - Shape & Size Shape: Due to the insertion of a round bead core during cultivation and a relatively thin nacre layer that helps maintain its roundness, Akoya pearls typically achieve a very round shape with a high roundness rate. Over 90% of high-quality Akoya pearls are nearly perfectly round. The Akoya pearls consumers encounter usually have good roundness. Freshwater cultured pearls (primarily non-nucleated) form naturally without a bead core, making their shapes more prone to being oval or irregular. Over 80% of freshwater pearls on the market are oval, flattened oval, or baroque shapes, with a lower proportion of perfectly round ones. Due to non-nucleated cultivation, perfectly round freshwater pearls are extremely rare; near-round is the highest roundness grade. Nucleated freshwater cultured pearls (Edison pearls) are similar in size to saltwater pearls but have lower roundness. Size: Akoya pearls are smaller, with pearls typically ranging from 6-9mm. Commercial production often falls within the 6-8mm or 5-8mm range. 8mm is considered a good size, with the largest Akoya pearls reaching 10-11mm. Larger Akoya pearl sizes are more valuable. Even a difference of 1mm, such as between 7-8mm and 8-9mm Akoya pearls, can result in a significant price difference. Freshwater cultured pearls typically range from 5-12mm in diameter. Nucleated freshwater pearls (Edison pearls) can reach 12-20mm. South Sea pearls are commonly 10-16mm, with those exceeding 16mm being relatively rare and precious. III. Appearance - Color Akoya pearls are primarily white. Common overtones include pink, light greenish-blue, and light yellowish-green, with pink being the most popular. Akoya also comes in blue tones (like Madama) and yellow tones (like Iridescent Queen, Iridescent Gold). Saltwater pearls (including Akoya) do not have purple. Freshwater cultured pearls mainly come in white, pink, and light purple. Purple is a color unique to freshwater pearls, derived from carotenoids in the triangle-sail mussel. Nucleated freshwater cultured pearls (Edison pearls) can exhibit deep purple or bronze colors. Freshwater pearls do not have pure black or deep gold colors. Some colors may be treated by bleaching or dyeing. IV. Appearance - Luster Pearl luster is a crucial factor in determining quality, even its soul. Luster is related to the thickness and quality of the nacre. The stronger the luster, the more precious the pearl and the higher its price. Luster is the most important value factor for pearls. Akoya pearls are known for their very high and beautiful luster, earning them the nickname "little light bulbs of the human world." Their luster is strong, capable of sharp reflections and clear imaging. In top-quality comparisons, Akoya's mirror-like luster can reach levels higher than South Sea pearls. High-quality specimens can reflect a person's face. Freshwater cultured pearls have a relatively softer luster, primarily diffuse reflection, soft like silk. Some high-quality freshwater pearls can achieve good luster, reaching 70%-80% of saltwater pearls. Some higher-grade freshwater pearls can achieve "extra strong luster." Freshwater pearls have a shallower luster and weaker refractive effect. GUILD classifies pearl luster into four grades: Very good, Good, Fair, and Poor. Luster is one of the factors in judging pearl quality. V. Appearance - Surface Quality Naturally produced pearls usually have some minor blemishes on their surface. The fewer blemishes a pearl has, the better its quality. Absolutely flawless pearls are extremely rare and expensive. Akoya pearls have a higher surface smoothness, with blemishes often being small pinpricks. Freshwater pearls may show growth lines or depressions on their surface. Surface quality is divided into four grades: Very good (near flawless), Good (minor blemishes), Fair (moderate blemishes), and Poor (many blemishes). Blemish level is one of the factors in determining pearl quality. VI. Physical Characteristics - Nacre Thickness & Durability Nacre thickness is an important factor in judging the quality of nucleated cultured pearls. Nacre thickness affects the pearl's beauty and durability. If the nacre is too thin, it can affect the luster, and prolonged friction may cause it to lose luster or even peel. Akoya pearls have relatively thinner nacre compared to other types of saltwater cultured pearls, typically ranging from 0.15mm to 0.55mm. 0.5mm is considered thick nacre for Akoya. According to GUILD standards, Akoya pearls with nacre thickness greater than 0.4mm are of better quality. Akoya is most sensitive to nacre thickness. Akoya's thinner nacre helps maintain its round shape. Freshwater cultured pearls (primarily non-nucleated) usually have nacre thickness ranging from 0.3 to 0.8mm. The internal structure of non-nucleated freshwater pearls is almost entirely composed of nacre. Prolonged wear of freshwater pearls may cause them to gradually lose luster due to friction, resulting in a relatively shorter lifespan. Nucleated freshwater pearls (Edison) have thicker nacre, which can reach 0.8-3mm. Overall, saltwater pearls have thicker nacre and a longer lifespan. Saltwater pearls (like South Sea pearls, Tahitian pearls) typically have nacre ranging from 0.8-3mm. South Sea pearls can have nacre up to 2mm, which is 60 to 100 times that of Akoya. VII. Daily Wear & Suitability Akoya pearls, with their high luster and roundness, as well as classic white tones, are a very popular choice for everyday wear. They are suitable for versatile necklace styles, exuding elegance, nobility, and classic charm. They are also appropriate for formal occasions, weddings, and business gifts. Freshwater cultured pearls, due to their affordable price (thanks to China's large production volume and cultivation methods) and diverse colors (especially baroque shapes), are a popular choice for daily commutes and casual wear. High-quality freshwater pearls (extra strong luster, near-round, very few blemishes) are visually indistinguishable from saltwater pearls to the naked eye and offer high cost-effectiveness, making them very suitable for everyday wear. They are ideal for students, career starters, or baroque pearl enthusiasts. If you have a limited budget and primarily wear pearls daily, high-quality freshwater pearls are an excellent option. From a purely functional perspective, there is very little difference in the wearing experience between high-quality freshwater pearls and saltwater pearls.