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Natural Coloured Diamonds
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Special Cut Diamonds
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White Diamonds
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Bespoke Concierge Program
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24/7 Customer Support
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Shipping Diamonds Globally
Tokyo Natural Diamond & Loose Diamonds Supplier
Source Natural Diamonds That Perform Beyond The Certificate
Why serious jewellers find diamond sourcing frustrating
A GIA certificate tells you what a diamond grades. It doesn’t tell you how it performs. Most sourcing problems happen in the gap between the two.
Stones that disappoint visually
Fluorescence haze, bow-tie effect in ovals and pears, uneven colour distribution none of these appear on a certificate. You only discover them when it arrives.
Matched pairs that don't match
Sourcing truly matched stones for earrings or layouts same tone, saturation, proportions requires expertise most suppliers either don’t have or won’t invest in.
Short inflated margins.
Multiple intermediaries between mine and jeweller mean markups at every step and no real transparency on what you’re actually paying for or where the stone came from.
Delayed custom execution.
Unusual ratios, calibrated sizes, recut requirements, specific colour intensities standard suppliers can’t accommodate custom specifications without long delays.
Three collections.
One standard of eye.
Natural coloured, white, and special-cut diamonds – Explore each collection, or tell us exactly what you need.
- ラウンド・ブリリアント — 0.18ct to 20ct+
品質は「トリプルエクセレント(3EX)」から「Good」まで、クラリティは「IF」から「I」まで取り揃えています。GIA、IGI、HRDの鑑定書付き、および鑑定書なしのオプションをご用意しています。
- ハート&アロー・ダイヤモンド
拡大検査により、極めて精密な光学的対称性が確認されています。ラウンド・ブリリアント・カットにおける、最高水準の精緻さを誇ります。
- ファンシーシェイプ
オーバル、ペア、マーキース、クッション、プリンセス、エメラルド、ラディアント、アッシャー、ハート。比率、シンメトリー、および「ボウタイ(蝶ネクタイ状の影)」の回避に関するアドバイス。
- GIA産地証明
鉱山から市場に至るまでのトレーサビリティ。ロシア産ではないことの証明済み。制裁遵守が求められるEUおよび米国のバイヤー向け。
- 製造用未認証小包
オーバル、ペア、マーキース、クッション、プリンセス、エメラルド、ラディアント、アッシャー、ハート。比率、シンメトリー、および「ボウタイ(蝶ネクタイ状の影)」の回避に関するアドバイス。
GIAの測定基準を超える、目視による確認
単なる鑑定書の評価だけでなく、ルーペや顕微鏡を用いて、蛍光性の影響、光の漏れ、そして実際の見た目の美しさを一つひとつ確認します。たとえ「Dカラー・IF(インターナリー・フローレス)」という最高ランクの石であっても、強い「ボウタイ(中央に現れる黒い影)」が見られるものは推奨しません。一方で、Gカラー・VS2であっても、正面から見た際に素晴らしい輝きを放つ石であれば、私たちはそれをお勧めします。
- フルカラー・スペクトル
イエロー、ピンク、ブルー、グリーン、バイオレット、オレンジ、アーガイル。市場で入手可能なものから、極めて希少な色調のものまで。
- 全強度範囲
ファンシーライトからファンシービビッド、ファンシーディープまで。輝度、トーン、彩度がどのように相互作用するか、そして形状が色の見え方にどのように影響するかを評価する専門知識。
- 精密にマッチングされたペアとレイアウト
イヤリング、ブレスレット、ハイジュエリーセット向けに、色味の揃った宝石を組み合わせます。すべての石において、色調、彩度、プロポーションの均一性を確保しています。
- アーガイル&超希少なストーン
アーガイル産のピンク、バイオレット、そしてブルー。ラボグロウン(人工)市場の影響を受けない希少性を誇る宝石です。天然の出自が証明・文書化されています。
価格表からは読み取れない専門知識
カラーダイヤモンドの価格には、ラパポート(Rapaport)のような固定された指標が存在しません。その評価には、ブラウンやグレーの色味が好ましさにどう影響するか、形状の選択が色を濃く見せるか薄く見せるか、そして境界線上の色の強さ(インテンシティ・グレード)がどう価格に反映されるかといった点を理解する必要があります。これこそが、パース・シャー(Parth Shah)が15年にわたり専門的に取り組んできた領域です。
- ヘリテージ・カット
オールドマインカット、オールドヨーロピアンカット、ローズカット。現代のプロポーション基準ではなく、その独特の個性や時代特有の風合いが評価されています。
- 幾何学的・デザイナーズカット
ハーフムーン、トラペゾイド、バゲット、シールド、ヘキサゴン、キャデラック、カイト、エポレット、トリリアント、ブリオレットなど。
- デザイナーズジュエリー用キャリブレート・セット
ビスポークやハイジュエリーのデザインにシームレスに組み込めるよう、左右対称性と寸法を精密に揃えています。
多くのサプライヤーが挑もうとしないレベルの複雑さへの対応
「スペシャルカット」は、標準的なプロポーションの基準表には当てはまりません。ハーフムーン(半月形)のペアを揃えたり、台形(トラペゾイド)を正確な寸法に合わせたりするには、鑑定書には記載されないような判断力が求められます。多くのサプライヤーが匙を投げてしまうこうした難易度の高い作業こそ、私たちが専門とする領域です。
Our Milestones
Certified by Leading Labs
Recognised by major diamond laboratories.
40+
Years of expertise in
diamond trading.
1:1
Personal guidance by
Parth Shah.
Free
Global insured shipping,
door-to-door.
About Raremonds
About Raremonds
Every middleman adds a percentage, inflating your final cost. By the time a stone reaches your bench, you’ve paid premium margins that eat into your profits.
Finding a single stone is easy; sourcing 20 perfectly matched parcels or unique accent layouts for custom high-jewelry takes weeks of frustrating back-and-forth. Many online listings don’t actually own the stones they list. You pitch a diamond to a client, only to find out it was sold days ago by someone else.
What separates us
from every other supplier
Not marketing claims. Specific, verifiable things that matter to a trade buyer who has been let down before.
Expert Guidance
From sourcing the finest stones to bringing them unscathed to the client, we are trusted guides in every facet of the industry, ensuring our clients receive tailored service with every transaction.
Exclusive Collection
Explore and choose from curated collections that feature gems that are a testament to luxury. Our limited-edition collections showcase exquisite diamonds that are the epitome of sophistication.
Ethically sourced. Fully traceable.
GIA Origin Certification available. Non-Russian provenance confirmed. For buyers in the EU and USA navigating diamond sanctions compliance, we provide the traceability documentation your clients and regulators require.
Direct access to Parth Shah
Your requirement is handled personally by Parth Shah — 15+ years specialising in natural fancy coloured diamonds, present at every major trade show from Hong Kong to Las Vegas. You’re not dealing with a listing algorithm.
Grading what certificates miss.
Every stone is inspected under loupe and microscope before dispatch. We assess fluorescence haze, bow-tie effect, uneven colour distribution, and saturation consistency details beyond a GIA report ensuring every diamond performs beautifully, not just qualifies on paper.
Precision matching for layouts.
Matching stones in coloured diamonds is one of the hardest things in the trade. Our recut-to-match capability means we can refine stones to achieve symmetry, uniformity, and consistent saturation creating pairs that most suppliers simply cannot deliver.
Ethical,Traceable,verified assets
GIA Origin Certification available. Non-Russian provenance confirmed. For buyers in the EU and USA navigating diamond sanctions compliance, we provide complete traceability documentation, ensuring every diamond meets regulatory requirements .
Direct access to Parth Shah.
Your requirements are handled personally by Parth Shah, with 15+ years of expertise in natural fancy coloured diamonds and participation at major global trade shows. Every recommendation is backed by experience your clients can trust, not algorithms.
Verifiable standing in the trade
Listed on Rapnet and Nivoda — the two primary B2B diamond platforms. Partnerships with GIA, IGI, HRD Antwerp, and Young Diamantaires. Our credentials are not claims on a website. They are verifiable industry relationships.
No minimum.No bureaucracy.
We work with single stones and large programmes alike. One specific stone for a commission. A calibrated parcel for a production run. A matched set for a suite. Tell us the requirement — we work with it, whatever the scale.
Seen a diamond online?
Check the price here
Paste a GIA certificate number or a diamond listing URL. We’ll tell you if you’re getting a fair market price no obligation, no sales call unless you want one.
Our Products
White Diamonds
Our Process
From your first message to delivery, here is exactly what happens and what you can expect at every stage.
01
Submit Your Requirements
Send us your stone specifications, budgets, millimeter ranges, or custom jewelry CAD files via our trade portal.
02
Precise Sourcing & Matching
Our master graders comb through our physical holdings to compile exact layouts or select specific standalone stones matching your criteria.
03
HD Media Verification
You receive unedited 360° videos, macro photography, and full grading certificates. What you see is exactly what you get no surprises.
04
Client ApprovalProcess
We implement rigorous quality assurance protocols. This involves client approvals at key stages, ensuring transparency and satisfaction. We establish clear payment terms from the start.
05
Insured Priority Shipping
Once finalized, your order is securely packed and dispatched via fully insured global couriers directly to your workshop.
06
Follow-up
We conduct post-delivery follow-ups to gauge client satisfaction, address any concerns, and maintain long-term relationships.
01
Submit Your
Requirements
Requirements
Shape, size, quality parameters, quantity, intended use. Single stones to large parcels. No minimum order. The more detail you provide, the faster we can respond.
02
Precise Sourcing & Matching
Our master graders comb through our physical holdings to compile exact layouts or select specific standalone stones matching your criteria
03
HD Media Verification
You receive unedited 360° videos, macro photography, and full grading certificates. What you see is exactly what you get—no surprises.
04
Client Approval
Process
Process
We implement rigorous quality assurance protocols. This involves client approvals at key stages, ensuring transparency and satisfaction. We establish clear payment terms from the start.
05
Insured Priority Shipping
Once finalized, your order is securely packed and dispatched via fully insured global couriers directly to your workshop.
06
Follow-up
We conduct post-delivery follow-ups to gauge client satisfaction, address any concerns, and maintain long-term relationships.
Bespoke Services
Diamond
Our diamond expertise offers GIA loose diamonds through matching, custom-cut, and made-to-spec programs engineered to meet your exact design tolerances and millimeter ranges.
Jewelery
We turn vision into heirloom-quality reality, providing custom jewelry manufacturing for private collectors and boutique trade professionals seeking premium white-label production execution.
Diamonds as Investments
Discover the timeless allure and enduring value of diamonds as investments with Raremonds. Beyond their exquisite beauty, diamonds stand as a steadfast symbol of wealth preservation and long-term financial security.
What the trade says about working with us.
From jewellers and designers who have sourced through Raremonds across multiple markets.
Parth’s ability to source and match coloured diamonds at the right prices with full transparency at every stage is unlike any other supplier I’ve worked with. He’s not selling diamonds, he’s solving problems.
— Fine Jeweller, New York, USA
Raremonds custom layout was precise to the last stone, with consistent tone and matching saturation delivered right on schedule. They are now our absolute go-to for anything that is technically complex.
— Jewellery Designer, Sydney, Australia
What sets Raremonds apart is that Parth looks at every stone himself. I’ve received diamonds from other suppliers that matched the cert but not my expectations. That doesn’t happen here.
— Independent Jeweller, London, UK
I come to Raremonds for coloured diamonds specifically. The depth of knowledge on colour behaviour, pricing, and matching is something I haven’t found anywhere else at this price level.
— Diamond Trader, USA
Learning Center
Common questions
from trade buyers
Can’t find what you’re looking for? WhatsApp Parth directly at +91 98193 47999.
Do you have a minimum order quantity?
No minimum. We work with everything from a single stone for a bespoke commission to large calibrated parcels for jewellery manufacturing. Tell us your requirement and we'll work with it, whatever the scale.
How long does sourcing typically take?
For standard requirements we respond with options within 24–48 hours. Complex matching, bespoke recut specifications, or hard-to-find colour intensities may take 3–5 business days depending on availability in our global network. We'll always give you a timeline upfront.
Can you supply non-certified parcels for manufacturing?
Yes. We supply calibrated, non-certified melee and parcel lots for jewellery manufacturing — with consistent colour, clarity, and size grading applied to your specified tolerances. Each parcel goes through our in-house QC process before dispatch.
Can you confirm non-Russian origin for EU/US compliance?
Yes. GIA Origin Certification is available for stones where EU and US diamond sanction compliance documentation is required. We can provide origin traceability documentation for your compliance needs. Speak to us about your specific requirements and jurisdiction.
How do I verify Raremonds before placing a first order?
We're listed on Rapnet and Nivoda — the diamond trade's two principal sourcing platforms — where our standing is independently verifiable. We hold partnerships with GIA, IGI, and HRD Antwerp. We're also happy to provide references from existing clients in your market on request.
Do you work with private clients or only trade buyers?
Both. Our work is overwhelmingly with the trade — jewellers, designers, manufacturers. But we also work directly with private clients on bespoke jewellery commissions, offering direct access to rare diamonds at trade pricing without retail intermediaries. If you're a private client, mention this in your enquiry and we'll route you to our bespoke jewellery service.
How is Raremonds different from RapNet?
A listing platform shows you what's available. We tell you what's actually worth buying. Every stone we recommend has been visually evaluated — beyond the certificate — for fluorescence impact, colour behaviour, light performance, and make quality. We also handle matching, bespoke cutting, and complex specifications that no platform can provide.
What is the Cut of a Diamond?
A diamond cut is a style or design guide used when shaping a diamond for polishing such as the brilliant cut. Cut does not refer to shape (pear, oval), but the symmetry, proportioning and polish of a diamond. The cut of a diamond greatly affects a diamond's brilliance; this means if it is cut poorly, it will be less luminous.
What is a GIA certificate?
When it comes to diamond grading laboratories, there is only one in the jewelry business that truly matters. That laboratory is the GIA (Gemological Institute of America) or more commonly known as GIA. GIA invented most of the systems in use today to grade the 4 C’s of diamonds, and they are completely unbiased in their grading process. This is why they are the most widely respected and only trusted source when one wants to know exactly the quality of a diamond. Those in the diamond or jewelry business submit their product to GIA in order to obtain a certificate that outlines all of the important attributes pertaining to a particular diamond.
How to buy a coloured diamond?
Only one in every 10,000 diamonds possesses natural colour and is referred to as a coloured diamond. For this reason, coloured diamonds are purchased almost exclusively for the intensity and distribution of the diamond's colour. When buying a coloured diamond, it is imperative that you look out for the 4 C's of the Diamond namely - Cut, Colour, Clarity & Carat. Also, verify that the seller has the Diamonds which are approved by GIA.
Tell us what
you need.
We'll handle
the rest.
No minimum order. Single stones to large programmes. Share your requirement shape, size, quality, quantity, intended use and we’ll respond within 24 hours with options and indicative pricing.
The thinking behind
how we judge a stone
Written for buyers who want to understand what sits beneath a grade not just read one. A few pieces worth your time.
Diamonds 101
The grade tells you what a diamond is on paper. It says nothing about how it faces up. Where the gap lies and why it matters to your client.
For Trade Buyers
A heavy bow-tie does not cost you a diamond. It costs you a remake, a returned piece, a client who quietly stops reordering.
The Natural Case
Where value holds, where it doesn’t, and why rarity still belongs to the earth. This is a clear-eyed, essential comparison built explicitly for trade buyers and their private diamond clients.
The art of the diamond has forever changed.
RAREMONDS is an elite natural diamond trader redefining rarity for modern luxury, fashion, and lifestyle brands. We specialise in sourcing exceptional natural stones, bespoke diamond cutting, and providing loose diamonds of unparalleled color, clarity, and provenance.
Read More
Color Diamonds Collections:
Natural Yellow Diamonds | Natural Pink Diamonds | Natural Blue Diamonds | Natural Green Diamonds | Natural Brown Diamonds | Natural Chameleon Diamonds | Natural Purple Diamonds | Natural Orange Diamonds | Natural Gray Diamonds
Diamond Shaped Collections:
Natural Round Brilliant Diamonds | Natural Pear Shaped Diamonds | Natural Oval Diamonds | Natural Marquise Diamonds | Natural Radiant Cut Diamonds | Natural Emerald Cut Diamonds | Natural Cushion Cut Diamonds
Natural Diamond & Loose Diamonds Supplier in Tokyo | GIA Certified & B2B
Raremonds is a trusted natural diamond and loose diamond supplier in Tokyo, serving jewellers, jewellery designers, wholesalers, manufacturers, and luxury retailers with premium natural diamonds since 1985. From our headquarters in Mumbai’s renowned Bharat Diamond Bourse, we source and supply certified white diamonds, natural fancy coloured diamonds, special-cut diamonds, calibrated parcels, and bespoke diamond solutions to businesses across Tokyo.
Every diamond is carefully evaluated beyond its certificate for brilliance, cut quality, colour performance, and overall beauty. Whether you’re sourcing a GIA-certified centre stone, wholesale loose diamond parcels, matched pairs, or custom-cut diamonds, Raremonds delivers expert sourcing, transparent pricing, and fully insured international shipping to Tokyo.
Why Tokyo Jewellers Choose Raremonds
Tokyo is one of Asia’s most prestigious luxury jewellery markets, renowned for its exceptional craftsmanship, high-quality standards, and discerning clientele. From luxury boutiques in Ginza to independent jewellery designers and manufacturers, businesses require trusted diamond suppliers who consistently deliver premium quality, precision, and reliability.
Since 1985, Raremonds has partnered with jewellery professionals worldwide, supplying carefully selected natural diamonds that exceed grading report expectations. Every diamond is individually inspected for brilliance, symmetry, proportions, and overall face-up beauty while also being machine screened for CVD and HPHT growth. With personalised sourcing, competitive wholesale pricing, and no minimum order requirements, we help Tokyo jewellers confidently source premium diamonds for luxury collections, engagement rings, and bespoke jewellery.
Wholesale Natural Loose Diamonds in Tokyo
Raremonds supplies a comprehensive range of natural loose diamonds for jewellers, manufacturers, and jewellery designers throughout Tokyo. Our inventory includes Round Brilliant, Oval, Pear, Cushion, Emerald, Radiant, Marquise, Princess, Asscher, Heart, and other fancy-cut diamonds.
Our collection includes:
- GIA, IGI, and HRD certified diamonds
- Certified and non-certified loose diamonds
- Round diamonds from 0.18 ct to 20 ct+
- Colours from D–Z
- Clarities from FL–I1
- Hearts & Arrows diamonds
- Calibrated melee and wholesale loose parcels
- TTLB shade goods offering exceptional value
Every diamond is selected for superior brilliance, light performance, proportions, fluorescence, and consistency, ensuring the exceptional quality standards expected by Tokyo’s jewellery industry.
Natural Fancy Coloured Diamonds & Bespoke Services
Raremonds is internationally recognised for its expertise in natural fancy coloured diamonds, supplying natural yellow, pink, blue, green, champagne, cognac, orange, purple, violet, red, grey, black, Fancy White, and chameleon diamonds. We also source certified Argyle pink diamonds and provide precision-matched coloured pairs, calibrated layouts, and bespoke sourcing for exclusive jewellery collections.
Beyond loose diamonds, we offer specialist services including diamond recutting, cut-to-match projects, custom-cut diamonds, and our Made-to-Spec Programme, where natural rough diamonds are cut precisely to your specifications. We also provide confidential white-label jewellery manufacturing for Tokyo jewellery brands, luxury retailers, and independent designers.
Why Partner with Raremonds?
For more than four decades, Raremonds has earned the trust of jewellers through exceptional quality, transparent pricing, and dependable sourcing. Every diamond undergoes comprehensive quality evaluation, certification verification, and advanced screening before shipment. Whether you’re purchasing a single investment-grade diamond or wholesale production parcels, Raremonds provides personalised service, expert guidance, and secure insured delivery for every order.
FAQs
Do you supply natural loose diamonds wholesale in Tokyo?
Yes. We supply certified and non-certified natural loose diamonds, wholesale parcels, coloured diamonds, and special-cut diamonds to jewellers, manufacturers, and designers throughout Tokyo and across Japan.
Are your diamonds GIA certified?
Yes. We supply GIA-certified diamonds alongside IGI and HRD certified stones, with every diamond verified and screened to ensure authenticity before shipment.
Can you source rare coloured diamonds?
Yes. We specialise in natural fancy coloured diamonds, including yellow, pink, blue, green, champagne, cognac, black, grey, Fancy White, chameleon, and Argyle-certified diamonds.
Do you offer custom diamond cutting?
Yes. We provide recutting, custom-cut diamonds, cut-to-match services, and natural rough diamonds cut to your exact specifications for bespoke jewellery projects.
Do you ship diamonds to Tokyo?
Yes. Raremonds provides secure, fully insured international shipping to Tokyo and throughout Japan, ensuring safe and reliable delivery for every order.
- Get Started -
Ready to source diamonds
you can actually trust?
Tell us your requirement. We’ll respond within 24 hours with options, availability, and indicative pricing. No obligation.