Heart|Natural|GIA

1.64ct F SI2 Heart Natural Diamond

EX • F/SI2 • GIA 6402161570

Certificate GIA 6402161570

Diamond specifications and retailer prices

From $12,017 NZD

₹643,915 INR

As of November 2, 2026

Save $349 NZD (3%) vs most expensive(unlock to see where)

13 retailers carry this diamond

Most expensive: $26,532 NZD 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 2, 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: $26,532 NZD|Low: $11,992 NZD|High: $26,532 NZD|Avg: $16,491 NZD

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$12,017 NZD

Retailer 6$13,422 NZD

Retailer 3$13,664 NZD

Retailer 9$14,643 NZD

Retailer 5$14,877 NZD

Retailer 4$14,942 NZD

Retailer 10$15,862 NZD

Retailer 8$16,108 NZD

Retailer 11$18,304 NZD

Retailer 7$22,226 NZD

NZ Jewellers$26,532 NZD

41 data points across 11 retailers

13 retailers$12,017 NZD to $12,365 NZD

B+

Cheapest Retailer

$12,017 NZD

₹643,915 INR

B+

Retailer 2

$12,365 NZD

A$10,704 AUD

View

Retailer 3

$13,422 NZD

$7,552 USD

View

Price last confirmed 12 days ago

Retailer 4

$13,664 NZD

$7,688 USD

View

Price last confirmed 12 days ago

Retailer 5

$13,712 NZD

$7,715 USD

View

Price last confirmed 13 days ago

Retailer 6

$14,643 NZD

$8,239 USD

View

Price last confirmed 18 days ago

Retailer 7

$14,877 NZD

£6,591 GBP

View

Price last confirmed 12 days ago

Retailer 8

$15,862 NZD

$8,925 USD

View

Price last confirmed 13 days ago

Retailer 9

$16,108 NZD

$9,063 USD

View

Price last confirmed 17 days ago

Retailer 10

$16,210 NZD

$9,121 USD

View

Price last confirmed 15 days ago

Retailer 11

$18,304 NZD

$10,299 USD

View

Price last confirmed 12 days ago

Retailer 12

$22,226 NZD

£9,847 GBP

View

Price last confirmed 13 days ago

Most Expensive

NZ Jewellers

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

$26,532 NZD

$14,928 USD

View

Price last confirmed 12 days ago

12 more retailers have this diamond

Prices start from $12,017 NZDSave up to $349 NZD

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

$12,017 NZD