{"title":"Ceylon Blue Sapphire Under 1 Carat","description":"\u003ch3 class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eCeylon Blue Sapphire Under 1 Carat\u003c\/h3\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eNatural Ceylon blue sapphires under 1 carat are among the most sought-after entry points into fine sapphire collecting. Mined in Sri Lanka — the island historically known as Ceylon, and still the world's most prestigious sapphire origin — these stones carry the same geological pedigree as the great Kashmir and Burmese sapphires, at a fraction of the price.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eA sub-1-carat Ceylon blue sapphire typically ranges from 5mm to 6.5mm in diameter depending on cut, making it an ideal size for solitaire rings, three-stone settings, and sapphire stud earrings. At this carat weight, colour and clarity matter far more than size: a vivid, well-saturated stone at 0.7ct will outperform a pale, included 0.95ct in both beauty and long-term value.\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003ch4 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\"\u003eWhat to Look for in a Ceylon Blue Sapphire Under 1 Carat\u003c\/h4\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eColour\u003c\/strong\u003e is the primary value driver. Ceylon blue sapphires are prized for their distinctly bright, medium-to-vivid blue — often described as cornflower blue — which holds its colour exceptionally well under both daylight and artificial light. Avoid stones that appear inky or very dark, as they lose colour depth in low light. Browse our full \u003ca class=\"underline underline underline-offset-2 decoration-1 decoration-current\/40 hover:decoration-current focus:decoration-current\" href=\"https:\/\/crescentgems.com\/collections\/blue-sapphire\"\u003eblue sapphire collection\u003c\/a\u003e to compare hues across the range.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eTreatment status\u003c\/strong\u003e has a significant impact on price and collectibility at this size. Many sub-1-carat sapphires on the market have been heat-treated to enhance colour and clarity. We disclose treatment status on every product listing. Every stone in this collection is sourced directly through our Sri Lanka network — see our \u003ca class=\"underline underline underline-offset-2 decoration-1 decoration-current\/40 hover:decoration-current focus:decoration-current\" href=\"https:\/\/crescentgems.com\/collections\/sapphire\"\u003efull sapphire catalog\u003c\/a\u003e for the complete range across all colours and sizes.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eCut quality\u003c\/strong\u003e is often underestimated by first-time buyers. A well-cut stone will appear larger and brighter than its carat weight suggests. We select for stones that are cut to maximise return of light, not to retain carat weight.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eLab reports\u003c\/strong\u003e — for stones at this size, independent certification confirms what you're actually buying. Many of our sub-1-carat Ceylon blue sapphires ship with GIA or recognised laboratory reports. Have a question about a specific stone or its paperwork? Email \u003ca class=\"underline underline underline-offset-2 decoration-1 decoration-current\/40 hover:decoration-current focus:decoration-current\" href=\"mailto:crescentgems@gmail.com\"\u003ecrescentgems@gmail.com\u003c\/a\u003e — we respond personally within one business day.\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003ch4 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\"\u003eCeylon Blue Sapphire vs Other Origins at Under 1 Carat\u003c\/h4\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eSri Lanka produces sapphires with a characteristic bright, slightly violet-leaning blue that is distinct from other origins:\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eMadagascar sapphires\u003c\/strong\u003e are often similar in colour but carry less origin premium — a good value alternative if provenance matters less to you. \u003cstrong\u003eThai sapphires\u003c\/strong\u003e are usually darker and more heavily treated. \u003cstrong\u003eMontana sapphires\u003c\/strong\u003e produce a teal-to-green-blue that is a very different look entirely.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eFor buyers where origin and traceability matter, Ceylon is the benchmark. Our stones are sourced directly through buying offices in Colombo, Beruwala, and Ratnapura — read more about how we source on our \u003ca class=\"underline underline underline-offset-2 decoration-1 decoration-current\/40 hover:decoration-current focus:decoration-current\" href=\"https:\/\/crescentgems.com\/about_us\"\u003eAbout page\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003ch4 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\"\u003eWhy Buy a Sub-1-Carat Sapphire?\u003c\/h4\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe under-1-carat range is the sweet spot for most engagement ring buyers and collectors for three key reasons:\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003ePrice accessibility\u003c\/strong\u003e — fine colour in a 0.5–0.9ct Ceylon sapphire costs significantly less than equivalent quality at 1ct+, where prices jump sharply at the carat threshold. \u003cstrong\u003eSetting versatility\u003c\/strong\u003e — sub-1-carat stones work across solitaire, halo, three-stone, and side-stone settings without overwhelming smaller hands. \u003cstrong\u003eAvailability of unheated stones\u003c\/strong\u003e — unheated Ceylon sapphires are rarer at larger sizes; the sub-1-carat range offers more options for buyers who want natural colour without thermal treatment.\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003ch4 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\"\u003eFrequently Asked Questions\u003c\/h4\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eIs a Ceylon blue sapphire under 1 carat good for an engagement ring?\u003c\/strong\u003e\u003cbr\u003eYes. A well-cut 0.7–0.9ct Ceylon blue sapphire is an excellent engagement stone. Sapphire ranks 9 on the Mohs hardness scale — second only to diamond — making it entirely suitable for everyday wear. For more on choosing a sapphire for an engagement ring, see our \u003ca class=\"underline underline underline-offset-2 decoration-1 decoration-current\/40 hover:decoration-current focus:decoration-current\" href=\"https:\/\/crescentgems.com\/about_us\/all_you_need_to_know\"\u003eall you need to know guide\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eWhat is the price range for Ceylon blue sapphires under 1 carat?\u003c\/strong\u003e\u003cbr\u003ePrices vary significantly based on colour, clarity, and treatment status. Heated stones in good colour typically start from $150–$400 per carat at this size. Unheated stones in fine colour can reach $800–$2,000+ per carat even under 1ct. Every listing on this page shows price per carat alongside the total price.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eHow do I know if a sapphire is really from Ceylon (Sri Lanka)?\u003c\/strong\u003e\u003cbr\u003eOrigin determination requires laboratory testing. GIA and other recognised labs can issue origin reports for sapphires. We source directly through our Sri Lanka network and carry lab reports confirming Ceylon origin on selected pieces. Email \u003ca class=\"underline underline underline-offset-2 decoration-1 decoration-current\/40 hover:decoration-current focus:decoration-current\" href=\"mailto:crescentgems@gmail.com\"\u003ecrescentgems@gmail.com\u003c\/a\u003e with any questions about a specific stone's documentation.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eCan I try a stone before committing?\u003c\/strong\u003e\u003cbr\u003eYes — select stones on this page are available through our Try-On programme, where you can see the stone in hand before making a final decision. All purchases include a 14-day return policy. Email us to ask which stones are currently Try-On eligible.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eWhat other sapphire colours does Crescent Gems carry?\u003c\/strong\u003e\u003cbr\u003eWe carry the full sapphire spectrum — from \u003ca class=\"underline underline underline-offset-2 decoration-1 decoration-current\/40 hover:decoration-current focus:decoration-current\" href=\"https:\/\/crescentgems.com\/collections\/peach-sapphire\"\u003epeach sapphire\u003c\/a\u003e to \u003ca class=\"underline underline underline-offset-2 decoration-1 decoration-current\/40 hover:decoration-current focus:decoration-current\" href=\"https:\/\/crescentgems.com\/collections\/white\"\u003ewhite sapphire\u003c\/a\u003e. Browse the \u003ca class=\"underline underline underline-offset-2 decoration-1 decoration-current\/40 hover:decoration-current focus:decoration-current\" href=\"https:\/\/crescentgems.com\/collections\/sapphire\"\u003ecomplete sapphire collection\u003c\/a\u003e to explore every colour.\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eExplore related collections: \u003ca class=\"underline underline underline-offset-2 decoration-1 decoration-current\/40 hover:decoration-current focus:decoration-current\" href=\"https:\/\/crescentgems.com\/collections\/blue-sapphire\"\u003eAll blue sapphires\u003c\/a\u003e · \u003ca class=\"underline underline underline-offset-2 decoration-1 decoration-current\/40 hover:decoration-current focus:decoration-current\" href=\"https:\/\/crescentgems.com\/collections\/sapphire\"\u003eAll sapphires\u003c\/a\u003e · \u003ca class=\"underline underline underline-offset-2 decoration-1 decoration-current\/40 hover:decoration-current focus:decoration-current\" href=\"https:\/\/crescentgems.com\/collections\/peach-sapphire\"\u003ePeach sapphire\u003c\/a\u003e · \u003ca class=\"underline underline underline-offset-2 decoration-1 decoration-current\/40 hover:decoration-current focus:decoration-current\" href=\"https:\/\/crescentgems.com\/collections\/white\"\u003eWhite sapphire\u003c\/a\u003e · \u003ca class=\"underline underline underline-offset-2 decoration-1 decoration-current\/40 hover:decoration-current focus:decoration-current\" href=\"https:\/\/crescentgems.com\/collections\/ruby\"\u003eNatural rubies\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e","products":[{"product_id":"0-87-ct-round-6mm-blue-sapphire","title":"0.87 ct Round Ceylon Blue Sapphire ~ Heat Treated","description":"\u003cp\u003eA natural 0.87 carat blue sapphire in a round cut, from Sri Lanka (Ceylon), heat treated. At 0.87 carats in a round brilliant, this is a practical accent and smaller center stone — sized for earring applications, three-stone ring center positions, and pendants where a sub-1-carat round sapphire delivers the Ceylon blue character in a compact, versatile format. The round cut maximizes light return and saturation for the carat weight.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhy Choose this 0.87 ct Round Ceylon Blue Sapphire?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\n\u003cp\u003eRound Ceylon blue sapphire at 0.87 carats is a practical size for earring center stones, three-stone ring configurations, and smaller pendant designs where the budget or the design calls for a sub-1-carat sapphire without compromising the Ceylon blue quality. The round brilliant format ensures maximum color display for the weight.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eKey Benefits of this Natural Blue Sapphire\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCeylon Blue Origin\u003c\/strong\u003e\u003cbr\u003eSri Lanka — the benchmark source for vivid, transparent blue sapphire.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRound Brilliant Versatility\u003c\/strong\u003e\u003cbr\u003eThe format that fits the widest range of settings — earrings, pendants, three-stone rings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccessible Sub-1-Carat Weight\u003c\/strong\u003e\u003cbr\u003eThe size that makes Ceylon blue sapphire accessible for earrings and accent applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Light Return\u003c\/strong\u003e\u003cbr\u003eRound brilliant cut returns more light than any other shape for this color.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable for Daily Wear\u003c\/strong\u003e\u003cbr\u003eCorundum at Mohs 9, second only to diamond.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eCarat Weight: 0.87 Carats\u003c\/li\u003e\n\u003cli\u003eGem Type: Natural Blue Sapphire\u003c\/li\u003e\n\u003cli\u003eCut: Round\u003c\/li\u003e\n\u003cli\u003eOrigin: Sri Lanka (Ceylon)\u003c\/li\u003e\n\u003cli\u003eTreatment: Heat Treated\u003c\/li\u003e\n\u003cli\u003eColor: Blue\u003c\/li\u003e\n\u003cli\u003eClarity: Eye-clean — no visible inclusions under normal viewing\u003c\/li\u003e\n\u003cli\u003eHardness: 9 on the Mohs scale\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThis 0.87 ct round Ceylon blue sapphire has been hand-selected for the vividness of its blue and the quality of its round cut — the Ceylon blue character in a compact, versatile format.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhy Customers Love This Gemstone\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCeylon Quality at Sub-1-Carat:\u003c\/strong\u003e The benchmark blue in an accessible weight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRound Compatibility:\u003c\/strong\u003e Fits any earring, pendant, or three-stone setting without custom work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDaily Wear Durability:\u003c\/strong\u003e Mohs 9 — appropriate for any daily jewelry application.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrusted Source:\u003c\/strong\u003e Treatment disclosed honestly, Ceylon origin confirmed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eOwning this 0.87 ct round Ceylon blue sapphire means choosing the most recognized sapphire quality in a practical, versatile format.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003ePerfect Uses for this 0.87 ct Blue Sapphire\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eEarring center stones (pair)\u003c\/li\u003e\n\u003cli\u003eThree-stone ring center stone\u003c\/li\u003e\n\u003cli\u003ePendant solitaire\u003c\/li\u003e\n\u003cli\u003eSeptember birthstone jewelry\u003c\/li\u003e\n\u003cli\u003eAccent stone in custom multi-stone design\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Crescent Gems","offers":[{"title":"Default Title","offer_id":42887343210563,"sku":"CG8315","price":1044.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8982\/8931\/files\/1112023001_1f1108ea-2329-42c2-91a1-c30995baae2f.jpg?v=1778352737"},{"product_id":"0-64-ct-round-ceylon-blue-sapphire","title":"0.64 ct Round Ceylon Blue Sapphire ~ Heat treated","description":"\u003cp\u003eA natural 0.64 carat blue sapphire in a round cut, from Sri Lanka (Ceylon), heat treated. At approximately 5mm in diameter, this round Ceylon blue sapphire is a calibrated format — the 5mm size fits a standard range of round settings in earring, pendant, and ring applications without custom fabrication. Ceylon origin adds the documented quality associated with Sri Lanka's fine sapphire production, and the round brilliant cut delivers the most vivid blue display for this carat weight.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhy Choose this 0.64 ct Round Ceylon Blue Sapphire?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\n\u003cp\u003eCeylon blue sapphire at 0.64 carats in a calibrated round is the most practical format for earring center stones and small pendant solitaires that require a vivid blue sapphire with documented origin. The round cut maximizes color display for the weight, and the ~5mm calibrated diameter eliminates the sizing and fitting steps that uncalibrated stones require in production.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eKey Benefits of this Natural Blue Sapphire\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCeylon Origin\u003c\/strong\u003e\u003cbr\u003eSri Lanka — the benchmark source for vivid blue sapphire at the commercial level.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalibrated ~5mm Format\u003c\/strong\u003e\u003cbr\u003eConsistent diameter for drop-in use in standard round solitaire earring and pendant settings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRound Brilliant Maximum Sparkle\u003c\/strong\u003e\u003cbr\u003eMaximum light return for this carat weight — vivid Ceylon blue face-up.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEarring and Pendant Scale\u003c\/strong\u003e\u003cbr\u003e0.64 carats — the right weight for earring center stones and small pendant solitaires.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable for Daily Wear\u003c\/strong\u003e\u003cbr\u003eCorundum at Mohs 9, second only to diamond.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eCarat Weight: 0.64 Carats\u003c\/li\u003e\n\u003cli\u003eGem Type: Natural Blue Sapphire\u003c\/li\u003e\n\u003cli\u003eCut: Round (approximately 5mm)\u003c\/li\u003e\n\u003cli\u003eOrigin: Sri Lanka (Ceylon)\u003c\/li\u003e\n\u003cli\u003eTreatment: Heat Treated\u003c\/li\u003e\n\u003cli\u003eColor: Blue\u003c\/li\u003e\n\u003cli\u003eClarity: Eye-clean — no visible inclusions under normal viewing\u003c\/li\u003e\n\u003cli\u003eHardness: 9 on the Mohs scale\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThis 0.64 ct round Ceylon blue sapphire has been hand-selected for the vividness of its blue — the quality that delivers consistent Ceylon character in earring and pendant applications.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhy Customers Love This Gemstone\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCeylon Blue Quality:\u003c\/strong\u003e The benchmark blue at an earring-friendly weight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalibrated Round:\u003c\/strong\u003e Fits standard ~5mm settings without adjustment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDaily Wear Durability:\u003c\/strong\u003e Mohs 9 — appropriate for all jewelry types.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrusted Source:\u003c\/strong\u003e Ceylon origin confirmed, treatment disclosed honestly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eOwning this 0.64 ct round Ceylon blue sapphire means choosing the most recognized sapphire quality in a calibrated earring and pendant format.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003ePerfect Uses for this 0.64 ct Blue Sapphire\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eSolitaire stud earrings (pair)\u003c\/li\u003e\n\u003cli\u003eSmall pendant solitaire\u003c\/li\u003e\n\u003cli\u003eThree-stone ring center stone\u003c\/li\u003e\n\u003cli\u003eSeptember birthstone jewelry\u003c\/li\u003e\n\u003cli\u003eAccent stone in custom multi-stone design\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Crescent Gems","offers":[{"title":"Default Title","offer_id":43039028052035,"sku":"CG8421","price":640.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8982\/8931\/files\/1112023001_aae45fce-218e-4d40-9001-3bf15e0a9b3f.jpg?v=1777536708"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8982\/8931\/collections\/8458001.jpg?v=1783153430","url":"https:\/\/crescentgems.com\/collections\/ceylon-blue-sapphire-under-1-carat.oembed","provider":"Crescent Gems","version":"1.0","type":"link"}