Cushion|Natural|GIA

1.30ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 6555373299

Certificate GIA 6555373299

Diamond specifications and retailer prices

From £3,177 GBP

A$6,558 AUD

As of October 31, 2026

Save £3,330 GBP (51%) vs most expensive(unlock to see where)

24 retailers carry this diamond

Most expensive: £6,506 GBP at MOH London · As of October 26, 2026

View at MOH London

About this 1.3ct natural cushion diamond

This 1.3ct natural cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555373299. Listed at 24 retailers as of October 26, 2026, with prices from £3,177 to £6,506, a £3,330 spread on the same certified stone. MOH London lists it at £6,506. 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

1.30

Carat

Colour

SI1

Clarity

Excellent

Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent

PolishExcellent

SymmetryVery Good

FluorescenceFaint

OriginNatural

Grading LabGIA

CertificateGIA 6555373299

Dimensions7.39 × 5.62 × 3.88 mm

L/W Ratio1.31

Girdle conditionFaceted

Culet sizeNone

Key to symbols

Cloud, Crystal, Feather, Indented Natural, Needle, Natural

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryVery Good

FluorescenceFaint

CertificateGIA 6555373299

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: £6,506 GBP|Low: £2,547 GBP|High: £6,576 GBP|Avg: £3,946 GBP|-1.1%

MOH London

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October 28, 2026

Retailer 20£2,547 GBP

Retailer 17£2,572 GBP

Retailer 19£3,104 GBP

Retailer 16£3,177 GBP

Retailer 9£3,223 GBP

Retailer 11£3,271 GBP

Retailer 25£3,275 GBP

Retailer 12£3,441 GBP

Retailer 8£3,480 GBP

Retailer 14£3,663 GBP

Retailer 23£3,696 GBP

Retailer 26£3,710 GBP

Retailer 3£3,882 GBP

Retailer 5£3,890 GBP

Retailer 2£3,956 GBP

Retailer 13£3,992 GBP

Retailer 10£4,113 GBP

Retailer 4£4,143 GBP

Retailer 27£4,143 GBP

Retailer 24£4,277 GBP

Retailer 6£4,313 GBP

Retailer 15£4,502 GBP

Retailer 22£4,592 GBP

Retailer 21£4,968 GBP

Retailer 18£5,376 GBP

Retailer 7£5,967 GBP

MOH London£6,506 GBP

15 data points across 27 retailers

24 retailers£3,177 GBP to £6,506 GBP

Retailer 1

£2,547 GBP

HK$26,700 HKD

Price last confirmed 52 days ago

B+

Retailer 2

£3,177 GBP

A$6,558 AUD

View

B+

Retailer 3

£3,223 GBP

$4,325 USD

View

B+

Retailer 4

£3,271 GBP

$4,390 USD

View

Retailer 5

£3,275 GBP

$4,395 USD

View

Price last confirmed 14 days ago

B+

Retailer 6

£3,441 GBP

$4,617 USD

View

B+

Retailer 7

£3,480 GBP

$4,670 USD

View

Retailer 8

£3,663 GBP

$4,915 USD

View

Price last confirmed 8 days ago

Retailer 9

£3,696 GBP

$4,960 USD

View

Price last confirmed 8 days ago

Retailer 10

£3,710 GBP

CA$6,915 CAD

View

Retailer 11

£3,882 GBP

$5,209 USD

View

Retailer 12

£3,890 GBP

$5,220 USD

View

B+

Retailer 13

£3,956 GBP

View

B+

Retailer 14

£3,992 GBP

View

Retailer 15

£4,113 GBP

A$8,491 AUD

View

Price last confirmed 24 days ago

Retailer 16

£4,143 GBP

$5,560 USD

View

Retailer 17

£4,143 GBP

$5,560 USD

View

Retailer 18

£4,277 GBP

$5,740 USD

View

Retailer 19

£4,313 GBP

$5,788 USD

View

Retailer 20

£4,502 GBP

$6,042 USD

View

Price last confirmed 19 days ago

Retailer 21

£4,592 GBP

€5,869 EUR

View

Retailer 22

£4,968 GBP

ZAR 107,704 ZAR

View

Retailer 23

£5,967 GBP

$8,008 USD

View

Most Expensive

MOH London

94BD62CEC · Oct 26

£6,506 GBP

View

23 more retailers have this diamond

Prices start from £3,177 GBPSave up to £3,330 GBP

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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