Yellow gold ring set with a single diamond, designed as a classic solitaire-style diamond ring with a clean, refined, and timeless fine jewelry appearance. The ring is set with 1 diamond with a stated diamond weight of 0.108 ct, giving the piece a subtle but distinct diamond focus while maintaining a practical and wearable format. The combination of yellow gold and a single diamond creates a traditional jewelry look with strong appeal for collectors, vintage jewelry buyers, gold ring collectors, diamond jewelry dealers, and buyers looking for a classic gold diamond ring with understated elegance. The ring has a total weight of 5.37 g and an inner diameter of 18 mm. Based on the inner diameter, the approximate inner circumference is 56.55 mm, calculated as 18 × π = 56.55 mm. This corresponds approximately to EU ring size 56–57, depending on exact fit, ring width, and sizing standard. The 18 mm inner diameter gives the ring a practical medium size, while the 5.37 g total weight gives it a solid and noticeable presence on the hand. The single diamond forms the main visual feature of the ring. A 0.108 ct diamond gives the design a refined and discreet brilliance, suitable for buyers looking for a solitaire diamond ring, gold diamond ring, vintage diamond ring, estate diamond ring, small diamond ring, or classic diamond ring with a single central stone. Single-diamond rings remain popular because of their simplicity, symmetry, and timeless jewelry character, making this piece suitable for everyday wear, formal occasions, collector display, estate jewelry collections, resale inventory, and diamond jewelry assortments. The diamond adds brightness and contrast against the warm yellow gold setting, creating a traditional and elegant appearance. The single-stone layout gives the ring a clean and focused design, offering a more minimal expression than multi-stone diamond rings while still providing the desirable visual appeal of a natural diamond. This makes the piece suitable for buyers seeking a gold diamond ring with balanced proportions, practical size, and classic styling. This ring is especially relevant for buyers searching for a yellow gold diamond ring, one diamond ring, single diamond ring, solitaire diamond ring, 0.108 ct diamond ring, gold ring with diamond, vintage diamond ring, estate diamond ring, classic diamond ring, natural diamond jewelry, diamond accent ring, small diamond solitaire ring, and fine gold ring with diamond. The combination of a 0.108 ct diamond weight, 5.37 g ring weight, and 18 mm inner diameter makes the piece suitable for private buyers, jewelry collectors, dealers, and diamond jewelry enthusiasts. The 5.37 g total weight gives the ring a solid construction compared with many lighter small diamond rings. This makes it attractive for buyers comparing gold rings by gram weight, diamond weight, ring size, and overall build quality. The 18 mm inner diameter and approximate 56.55 mm inner circumference provide useful sizing information for online buyers and bidders comparing gold diamond rings, vintage-style diamond rings, solitaire rings, and fine jewelry with documented measurements. These details make the ring relevant for searches such as 18 mm ring diameter, 56.55 mm ring circumference, EU size 56 ring, EU size 57 ring, diamond ring size 56, diamond ring size 57, 5.37 gram gold ring, and gold ring with documented size. The design is suitable for collectors of diamond jewelry, buyers looking for vintage-style gold rings, dealers seeking wearable resale inventory, and private buyers searching for a classic single-diamond ring with clear measurements. The diamond gives the piece a refined and valuable appearance, while the yellow gold setting provides warmth, durability, and traditional jewelry character. The result is a balanced fine jewelry piece with collector interest, practical wearability, and strong search relevance. A yellow gold diamond ring set with 1 diamond with a stated diamond weight of 0.108 ct, total weight 5.37 g, inner diameter 18 mm, and approximate inner circumference 56.55 mm. A suitable piece for fine jewelry collectors, diamond jewelry buyers, vintage jewelry collectors, gold ring collectors, dealers, and buyers seeking a classic gold ring with a single diamond. Strong SEO keyphrases for this item include yellow gold diamond ring, single diamond ring, one diamond ring, solitaire diamond ring, 0.108 ct diamond ring, 0.108 carat diamond ring, 5.37 gram gold ring, gold ring with diamond, vintage diamond ring, estate diamond ring, classic diamond ring, natural diamond jewelry, diamond accent ring, small diamond ring, small solitaire diamond ring, fine gold jewelry, polished yellow gold ring, collector diamond ring, women’s diamond ring, unisex diamond ring, solid gold diamond ring, ring with 18 mm diameter, 56.55 mm ring circumference, EU size 56 ring, EU size 57 ring, diamond ring size 56, diamond ring size 57, and collectible gold diamond jewelry.