Oval|Natural|GIA

1.51ct H SI1 Oval Natural Diamond

EX • H/SI1 • GIA 2427623450

Certificate GIA 2427623450

Diamond specifications and retailer prices

From $8,802 SGD

$6,885 USD

As of October 28, 2026

Save $10,263 SGD (54%) vs most expensive(unlock to see where)

19 retailers carry this diamond

Most expensive: $19,065 SGD at NZ Jewellers · As of October 27, 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 2427623450. Listed at 19 retailers as of October 27, 2026, with prices from $8,802 to $19,065, a $10,263 spread on the same certified stone. NZ Jewellers lists it at $19,065. 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

Colour

SI1

Clarity

Excellent

Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent

PolishExcellent

SymmetryVery Good

FluorescenceNone

OriginNatural

Grading LabGIA

CertificateGIA 2427623450

Dimensions9.06 × 6.55 × 4.13 mm

L/W Ratio1.38

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryVery Good

FluorescenceNone

CertificateGIA 2427623450

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 28

Current: $10,627 SGD|Low: $8,802 SGD|High: $16,078 SGD|Avg: $11,093 SGD|-1.1%

Retailer 1

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

October 29, 2026

Retailer 9$8,802 SGD

Retailer 2$8,926 SGD

Retailer 11$9,511 SGD

Retailer 10$9,612 SGD

Retailer 3$10,485 SGD

Retailer 1$10,627 SGD

Retailer 4$10,803 SGD

Retailer 7$10,808 SGD

Retailer 6$11,804 SGD

Retailer 8$13,756 SGD

Retailer 5$15,971 SGD

35 data points across 11 retailers

19 retailers$8,802 SGD to $19,065 SGD

B+

Cheapest Retailer

$8,802 SGD

$6,885 USD

B+

Retailer 2

$8,926 SGD

$6,982 USD

View

Retailer 3

$9,511 SGD

$7,440 USD

View

Price last confirmed 5 days ago

Retailer 4

$9,533 SGD

$7,457 USD

View

Price last confirmed 8 days ago

Retailer 5

$9,612 SGD

$7,519 USD

View

Retailer 6

$10,327 SGD

$8,078 USD

View

Price last confirmed 7 days ago

Retailer 7

$10,485 SGD

$8,202 USD

View

Price last confirmed 7 days ago

B+

Retailer 8

$10,627 SGD

£6,546 GBP

View

Retailer 9

$10,658 SGD

$8,337 USD

View

B+

Retailer 10

$10,803 SGD

£6,654 GBP

View

Retailer 11

$10,808 SGD

A$13,007 AUD

View

Price last confirmed 9 days ago

Retailer 12

$11,352 SGD

$8,880 USD

View

Retailer 13

$11,352 SGD

$8,880 USD

View

Retailer 14

$11,723 SGD

$9,170 USD

View

Retailer 15

$11,804 SGD

€8,794 EUR

View

Retailer 16

$11,916 SGD

$9,321 USD

View

Retailer 17

$13,756 SGD

ZAR 173,840 ZAR

View

Price last confirmed 10 days ago

Retailer 18

$15,971 SGD

£9,837 GBP

View

Most Expensive

NZ Jewellers

6af18481-3122-4a53-afef-cf2890653e4f · Oct 27

$19,065 SGD

$14,913 USD

View

18 more retailers have this diamond

Prices start from $8,802 SGDSave up to $10,263 SGD

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 Oval

$8,802 SGD