Radiant|Lab Grown|IGI

1.78ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG620418140

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

Certificate IGI LG620418140

Diamond specifications and retailer prices

From ₹33,726 INR

$354 USD

As of October 27, 2026

Save ₹3,33,064 INR (91%) vs most expensive(unlock to see where)

27 retailers carry this diamond

Most expensive: ₹3,66,790 INR at Brilliant Earth · As of October 28, 2026

View at Brilliant Earth

About this 1.78ct lab-grown radiant diamond

This 1.78ct 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 LG620418140 or 620418140. Listed at 27 retailers as of October 27, 2026, with prices from ₹33,726 to ₹3,66,790, a ₹3,33,064 spread on the same certified stone. Brilliant Earth lists it at ₹3,66,790. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.78

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle44.4°

Pavilion angle33.8°

OriginLab Grown

Grading LabIGI

CertificateIGI LG620418140

Dimensions8.17 × 6.07 × 4.09 mm

L/W Ratio1.35

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 LG620418140

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: ₹3,66,790 INR|Low: ₹32,392 INR|High: ₹3,67,742 INR|Avg: ₹1,16,102 INR|-0.3%

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

October 29, 2026

Retailer 4₹33,726 INR

Retailer 9₹39,156 INR

Retailer 6₹41,824 INR

Retailer 10₹41,824 INR

Retailer 12₹43,346 INR

Retailer 3₹55,733 INR

Retailer 14₹56,209 INR

Retailer 13₹71,922 INR

Retailer 16₹72,624 INR

Retailer 2₹75,334 INR

Retailer 11₹97,161 INR

Retailer 18₹1,22,708 INR

Retailer 8₹1,34,521 INR

Retailer 7₹1,58,148 INR

Retailer 15₹1,63,703 INR

Retailer 5₹1,65,527 INR

Retailer 17₹2,56,276 INR

Brilliant Earth₹3,66,790 INR

35 data points across 18 retailers

27 retailers₹33,726 INR to ₹3,66,790 INR

Cheapest Retailer

₹33,726 INR

$354 USD

Retailer 2

₹37,727 INR

$396 USD

View

Final sale: no returns

Retailer 3

₹39,156 INR

$411 USD

View

Retailer 4

₹41,824 INR

$439 USD

View

Retailer 5

₹41,824 INR

$439 USD

View

Retailer 6

₹43,346 INR

£358 GBP

View

Retailer 7

₹55,733 INR

$585 USD

View

Retailer 8

₹56,209 INR

$590 USD

View

Retailer 9

₹63,921 INR

€639 EUR

View

Retailer 10

₹67,165 INR

$705 USD

View

Retailer 11

₹71,922 INR

ZAR 12,196 ZAR

View

Retailer 12

₹72,624 INR

€726 EUR

View

Retailer 13

₹75,334 INR

£623 GBP

View

Retailer 14

₹88,506 INR

$929 USD

View

Price last confirmed 15 days ago

Retailer 15

₹97,161 INR

A$1,569 AUD

View

B+

Retailer 16

₹1,22,708 INR

$1,288 USD

View

B+

Retailer 17

₹1,31,949 INR

$1,385 USD

View

B+

Retailer 18

₹1,34,521 INR

$1,412 USD

View

B+

Retailer 19

₹1,38,482 INR

$1,454 USD

View

B+

Retailer 20

₹1,58,148 INR

$1,660 USD

View

B+

Retailer 21

₹1,60,628 INR

$1,686 USD

View

B+

Retailer 22

₹1,62,614 INR

£1,344 GBP

View

Price last confirmed 30 days ago

B+

Retailer 23

₹1,63,703 INR

£1,353 GBP

View

B+

Retailer 24

₹1,65,527 INR

A$2,673 AUD

View

Price last confirmed 21 days ago

B+

Retailer 25

₹1,76,345 INR

$1,851 USD

View

B+

Retailer 26

₹2,56,276 INR

$2,690 USD

View

Price last confirmed 8 days ago

Most Expensive

Brilliant Earth

16509820A · Oct 28

₹3,66,790 INR

$3,850 USD

View

26 more retailers have this diamond

Prices start from ₹33,726 INRSave up to ₹3,33,064 INR

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.

Similar diamonds

1.78ct Radiant

₹33,726 INR