Round|Lab Grown|IGI

1.91ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG809661925

Shape and cutting style on the report: Round brilliant

Certificate IGI LG809661925

Diamond specifications and retailer prices

From $604 AUD

$424 USD

As of October 28, 2026

Save $5,531 AUD (90%) vs most expensive(unlock to see where)

27 retailers carry this diamond

Most expensive: $6,135 AUD at Brilliant Earth · As of October 29, 2026

View at Brilliant Earth

About this 1.91ct lab-grown round diamond

This 1.91ct lab-grown round sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG809661925 or 809661925. Listed at 27 retailers as of October 28, 2026, with prices from $604 to $6,135, a $5,531 spread on the same certified stone. Brilliant Earth lists it at $6,135. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.91

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle34.8°

Pavilion angle40.7°

OriginLab Grown

Grading LabIGI

CertificateIGI LG809661925

Dimensions8.01 × 7.98 × 4.84 mm

L/W Ratio1.00

Girdle conditionFaceted

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 LG809661925

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 28

Current: $6,135 AUD|Low: $604 AUD|High: $6,135 AUD|Avg: $1,890 AUD

Brilliant Earth

Retailer 2

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Retailer 8

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Retailer 11

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October 29, 2026

Retailer 5$604 AUD

Retailer 15$942 AUD

Retailer 18$954 AUD

Retailer 13$1,011 AUD

Retailer 11$1,075 AUD

Retailer 8$1,147 AUD

Retailer 14$1,149 AUD

Retailer 17$1,199 AUD

Retailer 6$1,533 AUD

Retailer 2$1,553 AUD

Retailer 10$1,902 AUD

Retailer 3$1,924 AUD

Retailer 7$2,205 AUD

Retailer 4$2,505 AUD

Retailer 16$2,512 AUD

Retailer 12$2,627 AUD

Retailer 9$3,672 AUD

Brilliant Earth$6,135 AUD

30 data points across 18 retailers

27 retailers$604 AUD to $6,135 AUD

Retailer 1

$547 AUD

$384 USD

Price last confirmed 19 days ago

Retailer 2

$569 AUD

$400 USD

View

Price last confirmed 33 days ago

Retailer 3

$604 AUD

$424 USD

View

Final sale: no returns

Retailer 4

$638 AUD

$448 USD

View

Price last confirmed 37 days ago

Retailer 5

$678 AUD

$476 USD

View

Price last confirmed 27 days ago

Retailer 6

$678 AUD

$476 USD

View

Price last confirmed 17 days ago

Retailer 7

$696 AUD

$489 USD

View

Price last confirmed 33 days ago

Retailer 8

$942 AUD

$662 USD

View

Retailer 9

$954 AUD

$670 USD

View

Retailer 10

$1,011 AUD

£559 GBP

View

Retailer 11

$1,075 AUD

€719 EUR

View

Retailer 12

$1,147 AUD

$806 USD

View

Retailer 13

$1,149 AUD

ZAR 13,045 ZAR

View

Retailer 14

$1,199 AUD

£663 GBP

View

Retailer 15

$1,533 AUD

$1,077 USD

View

Retailer 16

$1,553 AUD

View

B+

Retailer 17

$1,902 AUD

$1,336 USD

View

B+

Retailer 18

$1,924 AUD

$1,352 USD

View

B+

Retailer 19

$2,179 AUD

$1,531 USD

View

Price last confirmed 22 days ago

B+

Retailer 20

$2,205 AUD

$1,549 USD

View

B+

Retailer 21

$2,267 AUD

$1,593 USD

View

Price last confirmed 38 days ago

B+

Retailer 22

$2,334 AUD

$1,640 USD

View

B+

Retailer 23

$2,505 AUD

$1,760 USD

View

B+

Retailer 24

$2,512 AUD

$1,765 USD

View

B+

Retailer 25

$2,627 AUD

£1,453 GBP

View

B+

Retailer 26

$3,672 AUD

$2,580 USD

View

Most Expensive

Brilliant Earth

20436430A · Oct 29

$6,135 AUD

$4,310 USD

View

26 more retailers have this diamond

Prices start from $604 AUDSave up to $5,531 AUD

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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