Radiant|Lab Grown|IGI

3.11ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG728578054

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

Certificate IGI LG728578054

Diamond specifications and retailer prices

From HK$9,807 HKD

$1,250 USD

As of October 30, 2026

Save HK$54,057 HKD (85%) vs most expensive(unlock to see where)

31 retailers carry this diamond

Most expensive: HK$63,864 HKD at Brilliant Earth · As of October 31, 2026

View at Brilliant Earth

About this 3.11ct lab-grown radiant diamond

This 3.11ct lab-grown radiant sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG728578054 or 728578054. Listed at 31 retailers as of October 30, 2026, with prices from HK$9,807 to HK$63,864, a HK$54,057 spread on the same certified stone. Brilliant Earth lists it at HK$63,864. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.11

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle41.7°

Pavilion angle33.9°

OriginLab Grown

Grading LabIGI

CertificateIGI LG728578054

Dimensions10.21 × 7.36 × 4.85 mm

L/W Ratio1.39

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 LG728578054

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: HK$63,864 HKD|Low: HK$9,807 HKD|High: HK$93,991 HKD|Avg: HK$30,181 HKD|-32.1%

Brilliant Earth

Retailer 2

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Retailer 23

November 1, 2026

Retailer 6HK$9,807 HKD

Retailer 21HK$10,984 HKD

Retailer 22HK$12,749 HKD

Retailer 4HK$13,236 HKD

Retailer 8HK$13,859 HKD

Retailer 17HK$16,030 HKD

Retailer 13HK$17,104 HKD

Retailer 20HK$18,198 HKD

Retailer 3HK$21,207 HKD

Retailer 18HK$21,332 HKD

Retailer 23HK$24,000 HKD

Retailer 19HK$25,697 HKD

Retailer 14HK$26,423 HKD

Retailer 12HK$27,501 HKD

Retailer 16HK$32,208 HKD

Retailer 5HK$32,654 HKD

Retailer 7HK$35,660 HKD

Retailer 2HK$36,558 HKD

Retailer 11HK$39,915 HKD

Retailer 10HK$40,020 HKD

Retailer 9HK$43,442 HKD

Retailer 15HK$45,270 HKD

Brilliant EarthHK$63,864 HKD

31 data points across 23 retailers

31 retailersHK$9,807 HKD to HK$63,864 HKD

Cheapest Retailer

HK$9,807 HKD

$1,250 USD

Retailer 2

HK$10,741 HKD

$1,369 USD

View

Price last confirmed 24 days ago

Retailer 3

HK$10,984 HKD

$1,400 USD

View

Final sale: no returns

Retailer 4

HK$11,541 HKD

$1,471 USD

View

Price last confirmed 32 days ago

Retailer 5

HK$12,459 HKD

$1,588 USD

View

Price last confirmed 29 days ago

Retailer 6

HK$12,561 HKD

$1,601 USD

View

Price last confirmed 35 days ago

Retailer 7

HK$12,749 HKD

$1,625 USD

View

Retailer 8

HK$13,204 HKD

$1,683 USD

View

Price last confirmed 35 days ago

Retailer 9

HK$13,236 HKD

$1,687 USD

View

Retailer 10

HK$13,859 HKD

View

Retailer 11

HK$16,030 HKD

£1,609 GBP

View

Retailer 12

HK$17,104 HKD

$2,180 USD

View

Retailer 13

HK$18,198 HKD

€2,209 EUR

View

Retailer 14

HK$21,207 HKD

$2,703 USD

View

Retailer 15

HK$21,332 HKD

$2,719 USD

View

Retailer 16

HK$23,349 HKD

$2,976 USD

View

Price last confirmed 22 days ago

Retailer 17

HK$24,000 HKD

$3,059 USD

View

Retailer 18

HK$25,098 HKD

$3,199 USD

View

Price last confirmed 32 days ago

Retailer 19

HK$25,697 HKD

A$5,039 AUD

View

Retailer 20

HK$26,423 HKD

ZAR 54,407 ZAR

View

B+

Retailer 21

HK$27,501 HKD

£2,760 GBP

View

B+

Retailer 22

HK$32,208 HKD

$4,105 USD

View

B+

Retailer 23

HK$32,654 HKD

$4,162 USD

View

B+

Retailer 24

HK$35,660 HKD

$4,545 USD

View

B+

Retailer 25

HK$36,558 HKD

£3,669 GBP

View

B+

Retailer 26

HK$39,915 HKD

$5,088 USD

View

B+

Retailer 27

HK$40,020 HKD

SGD 6,893 SGD

View

B+

Retailer 28

HK$43,442 HKD

$5,537 USD

View

Retailer 29

HK$45,270 HKD

$5,770 USD

View

Price last confirmed 27 days ago

Retailer 30

HK$54,246 HKD

A$10,637 AUD

View

Price last confirmed 31 days ago

Most Expensive

Brilliant Earth

15743649A · Oct 31

HK$63,864 HKD

$8,140 USD

View

30 more retailers have this diamond

Prices start from HK$9,807 HKDSave up to HK$54,057 HKD

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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