Oval|Natural|GIA

1.51ct H SI1 Oval Natural Diamond

EX • H/SI1 • GIA 3555666374

Certificate GIA 3555666374

Diamond specifications and retailer prices

From $6,688 CAD

$4,788 USD

As of October 19, 2026

13 retailers carry this diamond

Most expensive: $15,898 CAD at NZ Jewellers · As of October 17, 2026

View at NZ Jewellers

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded H 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 3555666374. Listed at 13 retailers as of October 17, 2026. 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

Crown angle37.2°

Pavilion angle37.6°

OriginNatural

Grading LabGIA

CertificateGIA 3555666374

Dimensions9.04 × 6.54 × 4.11 mm

L/W Ratio1.38

Girdle conditionFaceted

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateGIA 3555666374

Side View

Caratlytics Score

No score right now

No retailer has confirmed this stone recently, so we are not scoring it. Prices below are as of the date shown.

Price History

Last verified: Oct 19

Current: $15,898 CAD|Low: $6,688 CAD|High: $16,238 CAD|Avg: $9,603 CAD|-2.1%

NZ Jewellers

Retailer 2

Retailer 3

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Retailer 5

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Retailer 9

Retailer 10

Retailer 11

Retailer 12

Retailer 13

Retailer 14

Retailer 15

Retailer 16

Retailer 17

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Retailer 19

Retailer 20

October 21, 2026

Retailer 20$6,688 CAD

Retailer 13$6,848 CAD

Retailer 18$7,292 CAD

Retailer 9$7,655 CAD

Retailer 19$7,719 CAD

Retailer 17$7,795 CAD

Retailer 15$8,362 CAD

Retailer 7$8,612 CAD

Retailer 10$8,612 CAD

Retailer 2$8,897 CAD

Retailer 16$9,317 CAD

Retailer 12$9,521 CAD

Retailer 8$9,583 CAD

Retailer 4$9,648 CAD

Retailer 11$9,904 CAD

Retailer 5$10,310 CAD

Retailer 14$10,568 CAD

Retailer 6$11,538 CAD

Retailer 3$13,673 CAD

NZ Jewellers$15,898 CAD

30 data points across 20 retailers

13 retailers$6,688 CAD to $15,898 CAD

Retailer 1

$6,688 CAD

$4,788 USD

Price last confirmed 12 days ago

Retailer 2

$6,848 CAD

HK$38,300 HKD

View

Price last confirmed 11 days ago

Retailer 3

$7,292 CAD

$5,220 USD

View

Price last confirmed 12 days ago

Retailer 4

$8,362 CAD

$5,986 USD

View

Price last confirmed 11 days ago

Retailer 5

$8,612 CAD

$6,165 USD

View

Price last confirmed 15 days ago

Retailer 6

$8,612 CAD

$6,165 USD

View

Price last confirmed 15 days ago

Retailer 7

$8,897 CAD

£5,015 GBP

View

Price last confirmed 10 days ago

Retailer 8

$9,521 CAD

A$10,486 AUD

View

Price last confirmed 27 days ago

Retailer 9

$9,648 CAD

$6,907 USD

View

Price last confirmed 12 days ago

Retailer 10

$9,904 CAD

$7,090 USD

View

Price last confirmed 12 days ago

Retailer 11

$11,538 CAD

ZAR 133,442 ZAR

View

Price last confirmed 14 days ago

Retailer 12

$13,673 CAD

£7,707 GBP

View

Price last confirmed 12 days ago

Most Expensive

NZ Jewellers

1733883e-14a1-40c5-b683-c2c469e4271f · Oct 17

$15,898 CAD

$11,381 USD

View

Price last confirmed 14 days ago

12 more retailers have this diamond

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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1.51ct Oval

$6,688 CAD