Radiant|Lab Grown|IGI

1.64ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG700511937

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG700511937

Diamond specifications and retailer prices

From $614 NZD

$346 USD

As of October 30, 2026

Save $6,128 NZD (91%) vs most expensive(unlock to see where)

30 retailers carry this diamond

Most expensive: $6,742 NZD at Brilliant Earth · As of October 31, 2026

View at Brilliant Earth

About this 1.64ct lab-grown radiant diamond

This 1.64ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG700511937 or 700511937. Listed at 30 retailers as of October 30, 2026, with prices from $614 to $6,742, a $6,128 spread on the same certified stone. Brilliant Earth lists it at $6,742. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.64

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle41°

Pavilion angle31.2°

OriginLab Grown

Grading LabIGI

CertificateIGI LG700511937

Dimensions8.70 × 5.82 × 3.78 mm

L/W Ratio1.49

Culet sizePointed

Cert comments

As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG700511937

Side View

Caratlytics Score

How it works →

Excellent

Excellent quality and great value

Unlock full score analysis

See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30

Current: $6,742 NZD|Low: $614 NZD|High: $8,676 NZD|Avg: $2,207 NZD|-22.3%

Brilliant Earth

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

Retailer 16

Retailer 17

Retailer 18

Retailer 19

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Retailer 21

November 1, 2026

Retailer 3$614 NZD

Retailer 16$685 NZD

Retailer 9$886 NZD

Retailer 19$1,029 NZD

Retailer 21$1,068 NZD

Retailer 7$1,222 NZD

Retailer 15$1,228 NZD

Retailer 18$1,307 NZD

Retailer 13$1,355 NZD

Retailer 8$1,728 NZD

Retailer 17$1,765 NZD

Retailer 4$2,101 NZD

Retailer 20$2,230 NZD

Retailer 11$2,520 NZD

Retailer 12$2,538 NZD

Retailer 6$2,873 NZD

Retailer 5$2,943 NZD

Retailer 2$2,972 NZD

Retailer 10$3,159 NZD

Retailer 14$3,403 NZD

Brilliant Earth$6,742 NZD

35 data points across 21 retailers

30 retailers$614 NZD to $6,742 NZD

Cheapest Retailer

$614 NZD

$346 USD

Retailer 2

$614 NZD

$346 USD

View

Price last confirmed 24 days ago

Retailer 3

$653 NZD

$368 USD

View

Price last confirmed 33 days ago

Retailer 4

$685 NZD

$386 USD

View

Final sale: no returns

Retailer 5

$756 NZD

$426 USD

View

Price last confirmed 35 days ago

Retailer 6

$761 NZD

$429 USD

View

Price last confirmed 29 days ago

Retailer 7

$798 NZD

$450 USD

View

Price last confirmed 34 days ago

Retailer 8

$886 NZD

HK$3,900 HKD

View

Retailer 9

$1,029 NZD

$580 USD

View

Retailer 10

$1,068 NZD

$602 USD

View

Retailer 11

$1,222 NZD

$689 USD

View

Retailer 12

$1,228 NZD

€659 EUR

View

Retailer 13

$1,307 NZD

ZAR 11,898 ZAR

View

Retailer 14

$1,355 NZD

£601 GBP

View

Retailer 15

$1,728 NZD

$974 USD

View

Retailer 16

$1,765 NZD

A$1,530 AUD

View

B+

Retailer 17

$2,101 NZD

$1,184 USD

View

B+

Retailer 18

$2,230 NZD

$1,257 USD

View

B+

Retailer 19

$2,445 NZD

$1,378 USD

View

Retailer 20

$2,445 NZD

$1,378 USD

View

Price last confirmed 22 days ago

B+

Retailer 21

$2,520 NZD

$1,420 USD

View

B+

Retailer 22

$2,538 NZD

SGD 1,933 SGD

View

Retailer 23

$2,599 NZD

$1,465 USD

View

Price last confirmed 32 days ago

B+

Retailer 24

$2,873 NZD

$1,619 USD

View

B+

Retailer 25

$2,943 NZD

$1,658 USD

View

B+

Retailer 26

$2,972 NZD

£1,319 GBP

View

Retailer 27

$3,159 NZD

A$2,739 AUD

View

Price last confirmed 30 days ago

Retailer 28

$3,403 NZD

$1,918 USD

View

Retailer 29

$5,252 NZD

$2,960 USD

View

Price last confirmed 34 days ago

Most Expensive

Brilliant Earth

14847337A · Oct 31

$6,742 NZD

$3,800 USD

View

29 more retailers have this diamond

Prices start from $614 NZDSave up to $6,128 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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