Heart|Natural|GIA

0.91ct F SI1 Heart Natural Diamond

EX • F/SI1 • GIA 6551101722

Certificate GIA 6551101722

Diamond specifications and retailer prices

From £1,098 GBP

$1,473 USD

As of November 1, 2026

Save £1,955 GBP (64%) vs most expensive(unlock to see where)

15 retailers carry this diamond

Most expensive: £3,052 GBP at NZ Jewellers · As of November 3, 2026

View at NZ Jewellers

About this 0.91ct natural heart diamond

This 0.91ct natural heart sits in the just-under-one-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 6551101722. Listed at 15 retailers as of November 1, 2026, with prices from £1,098 to £3,052, a £1,955 spread on the same certified stone. NZ Jewellers lists it at £3,052. 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

0.91

Carat

Colour

SI1

Clarity

Excellent

Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle38.61°

Pavilion angle41.52°

OriginNatural

Grading LabGIA

CertificateGIA 6551101722

Dimensions5.68 × 6.62 × 3.94 mm

L/W Ratio1.17

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateGIA 6551101722

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: Nov 1

Current: £3,052 GBP|Low: £1,059 GBP|High: £3,052 GBP|Avg: £1,625 GBP

NZ Jewellers

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

Retailer 13

Retailer 14

Retailer 15

November 3, 2026

Retailer 4£1,098 GBP

Retailer 13£1,140 GBP

Retailer 12£1,154 GBP

Retailer 3£1,251 GBP

Retailer 5£1,251 GBP

Retailer 14£1,304 GBP

Retailer 11£1,309 GBP

Retailer 2£1,391 GBP

Retailer 6£1,444 GBP

Retailer 15£1,517 GBP

Retailer 7£1,673 GBP

Retailer 10£1,846 GBP

Retailer 8£2,193 GBP

Retailer 9£2,408 GBP

NZ Jewellers£3,052 GBP

43 data points across 15 retailers

15 retailers£1,098 GBP to £3,052 GBP

B+

Cheapest Retailer

£1,098 GBP

$1,473 USD

B+

Retailer 2

£1,140 GBP

$1,530 USD

View

B+

Retailer 3

£1,154 GBP

$1,549 USD

View

Final sale: no returns

B+

Retailer 4

£1,251 GBP

$1,679 USD

View

B+

Retailer 5

£1,251 GBP

$1,679 USD

View

B+

Retailer 6

£1,304 GBP

$1,750 USD

View

B+

Retailer 7

£1,309 GBP

$1,757 USD

View

B+

Retailer 8

£1,391 GBP

View

B+

Retailer 9

£1,444 GBP

$1,938 USD

View

B+

Retailer 10

£1,517 GBP

$2,036 USD

View

Retailer 11

£1,673 GBP

A$3,454 AUD

View

Price last confirmed 28 days ago

Retailer 12

£1,846 GBP

ZAR 40,017 ZAR

View

Retailer 13

£2,193 GBP

View

Retailer 14

£2,408 GBP

View

Most Expensive

NZ Jewellers

2df41225-1307-453d-9b46-2a8edd1b8f93 · Nov 3

£3,052 GBP

$4,096 USD

View

14 more retailers have this diamond

Prices start from £1,098 GBPSave up to £1,955 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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B+

0.91ct Heart

£1,098 GBP