Heart|Natural|GIA

1.64ct F SI2 Heart Natural Diamond

EX • F/SI2 • GIA 6402161570

Certificate GIA 6402161570

Diamond specifications and retailer prices

From £5,046 GBP

₹643,915 INR

As of November 2, 2026

Save £147 GBP (3%) vs most expensive(unlock to see where)

13 retailers carry this diamond

Most expensive: £11,141 GBP at NZ Jewellers · As of October 21, 2026

View at NZ Jewellers

About this 1.64ct natural heart diamond

This 1.64ct natural heart sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6402161570. Listed at 13 retailers as of November 1, 2026, with a relatively tight 3% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

1.64

Carat

Colour

SI2

Clarity

Excellent

Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent

PolishVery Good

SymmetryVery Good

FluorescenceNone

OriginNatural

Grading LabGIA

CertificateGIA 6402161570

Dimensions7.19 × 8.01 × 4.57 mm

L/W Ratio1.11

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishVery Good

SymmetryVery Good

FluorescenceNone

CertificateGIA 6402161570

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 2

Current: £11,141 GBP|Low: £5,036 GBP|High: £11,141 GBP|Avg: £6,920 GBP

NZ Jewellers

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

November 2, 2026

Retailer 2£5,046 GBP

Retailer 6£5,636 GBP

Retailer 3£5,738 GBP

Retailer 9£6,149 GBP

Retailer 5£6,247 GBP

Retailer 4£6,275 GBP

Retailer 10£6,661 GBP

Retailer 8£6,764 GBP

Retailer 11£7,686 GBP

Retailer 7£9,333 GBP

NZ Jewellers£11,141 GBP

42 data points across 11 retailers

13 retailers£5,046 GBP to £5,193 GBP

B+

Cheapest Retailer

£5,046 GBP

₹643,915 INR

B+

Retailer 2

£5,193 GBP

A$10,704 AUD

View

Retailer 3

£5,636 GBP

$7,552 USD

View

Price last confirmed 11 days ago

Retailer 4

£5,738 GBP

$7,688 USD

View

Price last confirmed 12 days ago

Retailer 5

£5,758 GBP

$7,715 USD

View

Price last confirmed 13 days ago

Retailer 6

£6,149 GBP

$8,239 USD

View

Price last confirmed 17 days ago

Retailer 7

£6,247 GBP

View

Price last confirmed 11 days ago

Retailer 8

£6,661 GBP

$8,925 USD

View

Price last confirmed 13 days ago

Retailer 9

£6,764 GBP

$9,063 USD

View

Price last confirmed 16 days ago

Retailer 10

£6,807 GBP

$9,121 USD

View

Price last confirmed 15 days ago

Retailer 11

£7,686 GBP

$10,299 USD

View

Price last confirmed 12 days ago

Retailer 12

£9,333 GBP

View

Price last confirmed 12 days ago

Most Expensive

NZ Jewellers

04a93c51-6b0a-4b2f-a8e4-88ba889f0eec · Oct 21

£11,141 GBP

$14,928 USD

View

Price last confirmed 12 days ago

12 more retailers have this diamond

Prices start from £5,046 GBPSave up to £147 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+

1.64ct Heart

£5,046 GBP