Radiant|Lab Grown|IGI

1.77ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG665410575

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

Certificate IGI LG665410575

Diamond specifications and retailer prices

From $424 SGD

$331 USD

As of October 27, 2026

Save $5,510 SGD (93%) vs most expensive(unlock to see where)

30 retailers carry this diamond

Most expensive: $5,934 SGD at Brilliant Earth · As of October 29, 2026

View at Brilliant Earth

About this 1.77ct lab-grown radiant diamond

This 1.77ct lab-grown radiant 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 LG665410575 or 665410575. Listed at 30 retailers as of October 27, 2026, with prices from $424 to $5,934, a $5,510 spread on the same certified stone. Brilliant Earth lists it at $5,934. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.77

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle40.7°

Pavilion angle33.9°

OriginLab Grown

Grading LabIGI

CertificateIGI LG665410575

Dimensions6.16 × 6.16 × 3.99 mm

L/W Ratio1.00

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 LG665410575

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 27

Current: $5,934 SGD|Low: $424 SGD|High: $5,934 SGD|Avg: $1,584 SGD

Brilliant Earth

Retailer 2

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October 29, 2026

Retailer 3$424 SGD

Retailer 19$476 SGD

Retailer 10$607 SGD

Retailer 18$724 SGD

Retailer 4$743 SGD

Retailer 21$855 SGD

Retailer 8$869 SGD

Retailer 17$905 SGD

Retailer 2$940 SGD

Retailer 9$1,198 SGD

Retailer 16$1,227 SGD

Retailer 22$1,544 SGD

Retailer 5$1,746 SGD

Retailer 12$1,749 SGD

Retailer 14$1,766 SGD

Retailer 15$1,769 SGD

Retailer 7$1,990 SGD

Retailer 6$2,067 SGD

Retailer 13$2,121 SGD

Retailer 11$2,209 SGD

Retailer 20$3,422 SGD

Brilliant Earth$5,934 SGD

34 data points across 22 retailers

30 retailers$424 SGD to $5,934 SGD

Cheapest Retailer

$424 SGD

$331 USD

Retailer 2

$424 SGD

$331 USD

View

Price last confirmed 21 days ago

Retailer 3

$442 SGD

$345 USD

View

Price last confirmed 29 days ago

Retailer 4

$476 SGD

$371 USD

View

Final sale: no returns

Retailer 5

$514 SGD

$401 USD

View

Price last confirmed 32 days ago

Retailer 6

$527 SGD

$411 USD

View

Price last confirmed 26 days ago

Retailer 7

$542 SGD

$423 USD

View

Price last confirmed 30 days ago

Retailer 8

$607 SGD

HK$3,700 HKD

View

Retailer 9

$724 SGD

$565 USD

View

Retailer 10

$743 SGD

$580 USD

View

Retailer 11

$855 SGD

€635 EUR

View

Retailer 12

$869 SGD

$678 USD

View

Retailer 13

$905 SGD

ZAR 11,405 ZAR

View

Retailer 14

$940 SGD

£577 GBP

View

Retailer 15

$1,198 SGD

$935 USD

View

Retailer 16

$1,227 SGD

A$1,473 AUD

View

Retailer 17

$1,544 SGD

$1,205 USD

View

B+

Retailer 18

$1,693 SGD

$1,321 USD

View

Price last confirmed 19 days ago

B+

Retailer 19

$1,693 SGD

$1,321 USD

View

B+

Retailer 20

$1,746 SGD

$1,362 USD

View

B+

Retailer 21

$1,749 SGD

$1,365 USD

View

B+

Retailer 22

$1,765 SGD

$1,377 USD

View

Price last confirmed 29 days ago

B+

Retailer 23

$1,766 SGD

View

B+

Retailer 24

$1,769 SGD

$1,380 USD

View

B+

Retailer 25

$1,990 SGD

$1,553 USD

View

B+

Retailer 26

$2,067 SGD

$1,613 USD

View

B+

Retailer 27

$2,121 SGD

£1,303 GBP

View

B+

Retailer 28

$2,209 SGD

A$2,651 AUD

View

Price last confirmed 27 days ago

B+

Retailer 29

$3,422 SGD

$2,670 USD

View

Price last confirmed 8 days ago

Most Expensive

Brilliant Earth

12598441A · Oct 29

$5,934 SGD

$4,630 USD

View

29 more retailers have this diamond

Prices start from $424 SGDSave up to $5,510 SGD

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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