River Stone DiamondsPrivate Consultation

The River Stone collection

A more discerning
standard for diamonds.

We personally review the details that matter: grade, proportions, media, growth method and availability, before a stone enters this collection.

A considered selection of CVD and HPHT lab-grown diamonds, including fancy colors, with final availability and order details confirmed before any order is finalized.

Search a certificate number from any diamond listing. We’ll open the matching River Stone page when it is currently available.

Explore our guides: loose IGI-certified diamonds · IGI certificate lookup · fancy-color diamonds · colored-diamond pricing.

Looking for several stones? Ask the Diamond Concierge for different shapes and carat weights in one request—for example, a 1.5 ct round, a 2 ct pear and a 3 ct emerald. Available matches appear together on one results page.

Shape
Choose one or more shapesEach shape enters the collection only after passing its own screening standard.
All shapes
Antique & specialty shapesExplore distinctive outlines that are currently available in the collection.
25 available shapes

Personally screened selection

Find the one that feels inevitable.

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RSD screened color
D-FEvery stone shown meets this color screen.
RSD screened clarity
VS2 or better for fancy colorColorless stones remain IF / VVS1 / VVS2 / VS1.
Reset search

Screened collection

Explore selected diamonds

Showing all 5,089 matching diamonds.

Refine the viewReturn to RSD SelectionShow considered shortlist

How RSD Selection worksWe begin with a curated shortlist. Every diamond shown passes our IGI, media, availability, growth-method and finish screens. Colorless stones stay within our stricter fluorescence screen; fancy-color stones retain the fluorescence grade reported on the certificate, including when it is not reported. RSD Selection places the strongest screened profiles first; it is a considered starting point—not a claim that one diamond is universally best.

Selected Portugueses

24 shown

1.58 carat Portuguese lab-grown diamond, IGI report LG797616436

RSD Selection Shown first for its screened grade profile

IGI report LG797616436

RSD-B21ECCEE943D

1.58 ct Portuguese

D colorVS1 clarityIGICVD

RSD Selection Score98/100Evidence complete
$549$347/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG797616436
1.37 carat Portuguese lab-grown diamond, IGI report LG801675630

IGI report LG801675630

RSD-98111CFE4D41

1.37 ct Portuguese

D colorVS1 clarityIGICVD

RSD Selection Score98/100Evidence complete
$399$291/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG801675630
4.69 carat Portuguese lab-grown diamond, IGI report LG804614901

IGI report LG804614901

RSD-5390C4C53129

4.69 ct Portuguese

E colorVVS2 clarityIGICVD

RSD Selection Score98/100Evidence complete
$1,299$277/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG804614901
3.06 carat Portuguese lab-grown diamond, IGI report LG795651830

IGI report LG795651830

RSD-0961678C9ED8

3.06 ct Portuguese

E colorVVS2 clarityIGICVD

RSD Selection Score98/100Evidence complete
$1,099$359/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG795651830
2.23 carat Portuguese lab-grown diamond, IGI report LG789609436

IGI report LG789609436

RSD-3DA01DD65C12

2.23 ct Portuguese

E colorVVS2 clarityIGICVD

RSD Selection Score98/100Evidence complete
$749$336/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG789609436
1.78 carat Portuguese lab-grown diamond, IGI report LG758560243

IGI report LG758560243

RSD-1A97CE56F811

1.78 ct Portuguese

E colorVVS2 clarityIGICVD

RSD Selection Score98/100Evidence complete
$499$280/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG758560243
1.2 carat Portuguese lab-grown diamond, IGI report LG803630531

IGI report LG803630531

RSD-E877E187AD65

1.20 ct Portuguese

E colorVVS2 clarityIGICVD

RSD Selection Score98/100Evidence complete
$449$374/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG803630531
2.62 carat Portuguese lab-grown diamond, IGI report LG788640329

IGI report LG788640329

RSD-4E7E64426C12

2.62 ct Portuguese

E colorVS1 clarityIGICVD

RSD Selection Score97/100Evidence complete
$949$362/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG788640329
2.22 carat Portuguese lab-grown diamond, IGI report LG768676601

IGI report LG768676601

RSD-AA2102761226

2.22 ct Portuguese

E colorVS1 clarityIGICVD

RSD Selection Score97/100Evidence complete
$749$337/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG768676601
2.07 carat Portuguese lab-grown diamond, IGI report LG818621002

IGI report LG818621002

RSD-FA1BD5CF584A

2.07 ct Portuguese

E colorVS1 clarityIGICVD

RSD Selection Score91/100Evidence partial
$1,099$531/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG818621002
1.85 carat Portuguese lab-grown diamond, IGI report LG814605056

IGI report LG814605056

RSD-B8D7DC49CBFF

1.85 ct Portuguese

E colorVS1 clarityIGICVD

RSD Selection Score97/100Evidence complete
$549$297/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG814605056
1.1 carat Portuguese lab-grown diamond, IGI report LG696566528

IGI report LG696566528

RSD-8CBA5138C1B8

1.10 ct Portuguese

E colorVS1 clarityIGICVD

RSD Selection Score97/100Evidence complete
$399$363/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG696566528
5.2 carat Portuguese lab-grown diamond, IGI report LG802634927

IGI report LG802634927

RSD-E6C1CD9C894B

5.20 ct Portuguese

F colorVVS2 clarityIGICVD

RSD Selection Score97/100Evidence complete
$3,299$634/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG802634927
5.08 carat Portuguese lab-grown diamond, IGI report LG791646132

IGI report LG791646132

RSD-614BF6D1CAD3

5.08 ct Portuguese

F colorVVS2 clarityIGICVD

RSD Selection Score97/100Evidence complete
$1,699$334/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG791646132
4.16 carat Portuguese lab-grown diamond, IGI report LG802634911

IGI report LG802634911

RSD-44070ADADDC5

4.16 ct Portuguese

F colorVVS2 clarityIGICVD

RSD Selection Score97/100Evidence complete
$2,499$601/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG802634911
3.85 carat Portuguese lab-grown diamond, IGI report LG813641276

IGI report LG813641276

RSD-B4E137D36807

3.85 ct Portuguese

F colorVVS2 clarityIGICVD

RSD Selection Score97/100Evidence complete
$1,799$467/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG813641276
3.09 carat Portuguese lab-grown diamond, IGI report LG817663941

IGI report LG817663941

RSD-FD0BC23B2667

3.09 ct Portuguese

F colorVVS2 clarityIGICVD

RSD Selection Score91/100Evidence partial
$1,699$550/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG817663941
3.08 carat Portuguese lab-grown diamond, IGI report LG808622540

IGI report LG808622540

RSD-8F4E3BCF6616

3.08 ct Portuguese

F colorVVS2 clarityIGICVD

RSD Selection Score91/100Evidence partial
$1,699$552/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG808622540
2.66 carat Portuguese lab-grown diamond, IGI report LG809617807

IGI report LG809617807

RSD-D6A666611606

2.66 ct Portuguese

F colorVVS2 clarityIGICVD

RSD Selection Score97/100Evidence complete
$799$300/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG809617807
2.52 carat Portuguese lab-grown diamond, IGI report LG818620994

IGI report LG818620994

RSD-196DC8E56F9C

2.52 ct Portuguese

F colorVVS2 clarityIGICVD

RSD Selection Score97/100Evidence complete
$1,299$515/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG818620994
2.15 carat Portuguese lab-grown diamond, IGI report LG805694047

IGI report LG805694047

RSD-3BED7775921C

2.15 ct Portuguese

F colorVVS2 clarityIGICVD

RSD Selection Score97/100Evidence complete
$749$348/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG805694047
2.53 carat Portuguese lab-grown diamond, IGI report LG799655351

IGI report LG799655351

RSD-38A67B38CE13

2.53 ct Portuguese

F colorVS1 clarityIGICVD

RSD Selection Score96/100Evidence complete
$799$316/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG799655351
5.58 carat Portuguese lab-grown diamond, IGI report LG794684282

IGI report LG794684282

RSD-7CCAD8AC5599

5.58 ct Portuguese

Fancy Vivid Pink colorVVS2 clarityIGICVD

RSD Selection Score94/100Evidence complete
$3,599$645/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG794684282
1.63 carat Portuguese lab-grown diamond, IGI report LG710552669

IGI report LG710552669

RSD-E9BC5165DA37

1.63 ct Portuguese

Fancy Vivid Pink colorVS1 clarityIGICVD

RSD Selection Score93/100Evidence complete
$1,099$674/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG710552669

Selected Princesss

6 shown

1.61 carat Princess lab-grown diamond, IGI report LG735523483

RSD Selection Shown first for its screened grade profile

IGI report LG735523483

RSD-5577475199B0

1.61 ct Princess

D colorVVS1 clarityIGICVD

RSD Selection Score92/100Evidence complete
$399$248/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG735523483
1.29 carat Princess lab-grown diamond, IGI report LG826650418

IGI report LG826650418

RSD-8042D35B1A5F

1.29 ct Princess

D colorVVS1 clarityIGICVD

RSD Selection Score100/100Evidence complete
$449$348/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG826650418
1.05 carat Princess lab-grown diamond, IGI report LG826695443

IGI report LG826695443

RSD-2C9CAC177404

1.05 ct Princess

D colorVVS1 clarityIGICVD

RSD Selection Score100/100Evidence complete
$349$332/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG826695443
10.09 carat Princess lab-grown diamond, IGI report LG773667308

IGI report LG773667308

RSD-9869D8A24232

10.09 ct Princess

D colorVVS2 clarityIGICVD

RSD Selection Score99/100Evidence complete
$6,199$614/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG773667308
6.08 carat Princess lab-grown diamond, IGI report LG760595418

IGI report LG760595418

RSD-C20315B71B07

6.08 ct Princess

D colorVVS2 clarityIGICVD

RSD Selection Score99/100Evidence complete
$2,299$378/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG760595418
1.8 carat Princess lab-grown diamond, IGI report LG843675178

IGI report LG843675178

RSD-66775F53418B

1.80 ct Princess

D colorVVS2 clarityIGICVD

RSD Selection Score99/100Evidence complete
$399$222/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG843675178

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