Heart|Natural|GIA

1.51ct G SI1 Heart Natural Diamond

EX • G/SI1 • GIA 6481518557

Certificate GIA 6481518557

Diamond specifications and retailer prices

From $9,301 CAD

$6,656 USD

As of October 30, 2026

Save $7,193 CAD (44%) vs most expensive(unlock to see where)

19 retailers carry this diamond

Most expensive: $16,494 CAD at MOH London · As of October 29, 2026

View at MOH London

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6481518557. Listed at 19 retailers as of October 29, 2026, with prices from $9,301 to $16,494, a $7,193 spread on the same certified stone. MOH London lists it at $16,494. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51

Carat

Color

SI1

Clarity

Excellent

Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

OriginNatural

Grading LabGIA

CertificateGIA 6481518557

Dimensions7.15 × 6.78 × 4.48 mm

L/W Ratio1.05

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateGIA 6481518557

Side View

Caratlytics Score

How it works →

B+

Very Good

Strong quality and value balance

Unlock full score analysis

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

Price History

Last verified: Oct 30

Current: $16,494 CAD|Low: $9,024 CAD|High: $16,604 CAD|Avg: $11,848 CAD|-0.7%

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

October 31, 2026

Retailer 4$9,301 CAD

Retailer 12$9,843 CAD

Retailer 3$9,845 CAD

Retailer 5$9,845 CAD

Retailer 13$9,927 CAD

Retailer 7$11,114 CAD

Retailer 8$11,126 CAD

Retailer 11$11,288 CAD

Retailer 10$11,292 CAD

Retailer 6$12,864 CAD

Retailer 2$14,463 CAD

Retailer 9$16,256 CAD

MOH London$16,494 CAD

34 data points across 13 retailers

19 retailers$9,301 CAD to $16,494 CAD

B+

Cheapest Retailer

$9,301 CAD

$6,656 USD

B+

Retailer 2

$9,356 CAD

$6,695 USD

View

B+

Retailer 3

$9,843 CAD

$7,044 USD

View

Final sale: no returns

B+

Retailer 4

$9,845 CAD

$7,045 USD

View

Retailer 5

$9,845 CAD

$7,045 USD

View

Price last confirmed 25 days ago

B+

Retailer 6

$9,927 CAD

$7,104 USD

View

B+

Retailer 7

$10,485 CAD

$7,503 USD

View

B+

Retailer 8

$11,114 CAD

£6,263 GBP

View

B+

Retailer 9

$11,126 CAD

£6,269 GBP

View

Retailer 10

$11,288 CAD

$8,078 USD

View

Retailer 11

$11,292 CAD

A$12,432 AUD

View

Price last confirmed 11 days ago

Retailer 12

$11,319 CAD

$8,100 USD

View

Retailer 13

$11,319 CAD

$8,100 USD

View

Retailer 14

$11,696 CAD

$8,370 USD

View

Retailer 15

$11,852 CAD

$8,481 USD

View

Retailer 16

$12,864 CAD

€8,767 EUR

View

Retailer 17

$14,463 CAD

ZAR 167,201 ZAR

View

Retailer 18

$16,256 CAD

£9,160 GBP

View

Most Expensive

MOH London

7918798AC · Oct 29

$16,494 CAD

£9,294 GBP

View

18 more retailers have this diamond

Prices start from $9,301 CADSave up to $7,193 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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B+

1.51ct Heart

$9,301 CAD