Round|Natural|GIA

6.57ct D FL Round Natural Diamond

EX • D/FL • GIA 5231913143

Certificate GIA 5231913143

Diamond specifications and retailer prices

From $553,705 CAD

£312,111 GBP

As of October 31, 2026

Save $357,007 CAD (39%) vs most expensive(unlock to see where)

16 retailers carry this diamond

Most expensive: $910,712 CAD at MOH London · As of November 1, 2026

View at MOH London

About this 6.57ct natural round diamond

This 6.57ct natural round sits in the over five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by GIA 5231913143. Listed at 16 retailers as of October 31, 2026, with prices from $553,705 to $910,712, a $357,007 spread on the same certified stone. MOH London lists it at $910,712. At this carat range, natural pricing varies dramatically across retailers, so the cross-retailer spread on this exact stone is your single best indicator of fair price.

The 4Cs

6.57

Carat

Color

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle35.5°

Pavilion angle41°

OriginNatural

Grading LabGIA

CertificateGIA 5231913143

Dimensions11.90 × 11.93 × 7.42 mm

L/W Ratio1.00

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateGIA 5231913143

Side View

Caratlytics Score

How it works →

Excellent

Excellent quality and great value

Unlock full score analysis

See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31

Current: $910,712 CAD|Low: $536,335 CAD|High: $921,684 CAD|Avg: $657,298 CAD|-1.1%

MOH London

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

Retailer 13

Retailer 14

Retailer 15

Retailer 16

Retailer 17

November 2, 2026

Retailer 16$542,753 CAD

Retailer 12$553,705 CAD

Retailer 3$569,456 CAD

Retailer 15$579,299 CAD

Retailer 14$603,768 CAD

Retailer 9$607,428 CAD

Retailer 6$607,588 CAD

Retailer 2$615,374 CAD

Retailer 7$643,665 CAD

Retailer 17$670,484 CAD

Retailer 4$697,305 CAD

Retailer 10$704,407 CAD

Retailer 13$704,447 CAD

Retailer 11$705,566 CAD

Retailer 8$717,701 CAD

Retailer 5$724,124 CAD

MOH London$910,712 CAD

37 data points across 17 retailers

16 retailers$553,705 CAD to $910,712 CAD

Retailer 1

$542,753 CAD

A$597,755 AUD

Price last confirmed 29 days ago

Retailer 2

$553,705 CAD

£312,111 GBP

View

Retailer 3

$579,299 CAD

$414,703 USD

View

Final sale: no returns

Retailer 4

$603,768 CAD

$432,220 USD

View

Retailer 5

$607,428 CAD

$434,840 USD

View

Retailer 6

$607,588 CAD

$434,954 USD

View

Retailer 7

$615,374 CAD

£346,873 GBP

View

Retailer 8

$643,665 CAD

$460,781 USD

View

Price last confirmed 8 days ago

B+

Retailer 9

$670,484 CAD

$479,980 USD

View

B+

Retailer 10

$697,305 CAD

$499,180 USD

View

B+

Retailer 11

$704,407 CAD

€480,252 EUR

View

B+

Retailer 12

$704,447 CAD

$504,293 USD

View

B+

Retailer 13

$705,566 CAD

ZAR 8,159,840 ZAR

View

B+

Retailer 14

$717,701 CAD

$513,781 USD

View

B+

Retailer 15

$724,124 CAD

$518,379 USD

View

Most Expensive

B+

MOH London

58B1E8B80 · Nov 1

$910,712 CAD

£513,348 GBP

View

15 more retailers have this diamond

Prices start from $553,705 CADSave up to $357,007 CAD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

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6.57ct Round

$553,705 CAD