Round|Natural|GIA

1.20ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2504814178

Certificate GIA 2504814178

Diamond specifications and retailer prices

From $4,359 AUD

$3,062 USD

As of October 31, 2026

Save $5,474 AUD (56%) vs most expensive(unlock to see where)

22 retailers carry this diamond

Most expensive: $9,833 AUD at NZ Jewellers · As of October 30, 2026

View at NZ Jewellers

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2504814178. Listed at 22 retailers as of October 30, 2026, with prices from $4,359 to $9,833, a $5,474 spread on the same certified stone. NZ Jewellers lists it at $9,833. 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

1.20

Carat

Colour

SI1

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle32°

Pavilion angle41.6°

OriginNatural

Grading LabGIA

CertificateGIA 2504814178

Dimensions6.87 × 6.85 × 4.18 mm

L/W Ratio1.00

Star length55%

Lower girdle75%

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateGIA 2504814178

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 31

Current: $6,200 AUD|Low: $4,079 AUD|High: $9,552 AUD|Avg: $5,998 AUD|+2.4%

Retailer 1

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

November 1, 2026

Retailer 9$4,359 AUD

Retailer 6$4,718 AUD

Retailer 5$4,802 AUD

Retailer 8$5,310 AUD

Retailer 3$5,689 AUD

Retailer 7$6,045 AUD

Retailer 1$6,200 AUD

Retailer 4$6,937 AUD

Retailer 2$9,438 AUD

42 data points across 9 retailers

22 retailers$4,359 AUD to $9,833 AUD

B+

Cheapest Retailer

$4,359 AUD

$3,062 USD

B+

Retailer 2

$4,410 AUD

$3,098 USD

View

B+

Retailer 3

$4,540 AUD

$3,189 USD

View

B+

Retailer 4

$4,694 AUD

View

B+

Retailer 5

$4,718 AUD

$3,314 USD

View

Final sale: no returns

B+

Retailer 6

$4,802 AUD

$3,373 USD

View

B+

Retailer 7

$4,911 AUD

$3,450 USD

View

B+

Retailer 8

$5,112 AUD

$3,591 USD

View

B+

Retailer 9

$5,112 AUD

$3,591 USD

View

B+

Retailer 10

$5,119 AUD

$3,596 USD

View

Retailer 11

$5,310 AUD

$3,730 USD

View

B+

Retailer 12

$5,689 AUD

£3,147 GBP

View

B+

Retailer 13

$5,709 AUD

$4,010 USD

View

B+

Retailer 14

$5,709 AUD

$4,010 USD

View

Retailer 15

$5,894 AUD

$4,140 USD

View

Retailer 16

$5,899 AUD

$4,144 USD

View

Retailer 17

$6,045 AUD

View

Price last confirmed 24 days ago

Retailer 18

$6,200 AUD

€4,148 EUR

View

Retailer 19

$6,389 AUD

$4,488 USD

View

Price last confirmed 9 days ago

Retailer 20

$6,937 AUD

ZAR 78,722 ZAR

View

Retailer 21

$9,438 AUD

£5,220 GBP

View

Most Expensive

NZ Jewellers

08346862-4419-48e2-ab77-6760ed94a92f · Oct 30

$9,833 AUD

$6,907 USD

View

21 more retailers have this diamond

Prices start from $4,359 AUDSave up to $5,474 AUD

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+

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