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Round|Lab Grown|IGI

3.09ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG734539318

Shape and cutting style on the report: Round brilliant

Certificate IGI LG734539318

Diamond specifications and retailer prices

From HK$7,265 HKD
$926 USD
As of November 1, 2026
Save HK$72,133 HKD (91%) vs most expensive(unlock to see where)
29 retailers carry this diamond
Most expensive: HK$79,398 HKD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.09ct lab-grown round diamond

This 3.09ct lab-grown round 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 LG734539318 or 734539318. Listed at 29 retailers as of October 31, 2026, with prices from HK$7,265 to HK$79,398, a HK$72,133 spread on the same certified stone. Brilliant Earth lists it at HK$79,398. 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

3.09
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG734539318
Dimensions9.29 × 9.35 × 5.77 mm
L/W Ratio1.01
Girdle conditionFaceted
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
Top View
9.29 mm9.35 mm3.09 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG734539318
Side View
Table 57.0%Crown 35.4°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.9%

Caratlytics Score

How it works →
A
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: Nov 1
Current: HK$79,398 HKD|Low: HK$7,265 HKD|High: HK$79,398 HKD|Avg: HK$23,440 HKD
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
November 1, 2026
Retailer 2HK$7,265 HKD
Retailer 4HK$7,901 HKD
Retailer 14HK$8,128 HKD
Retailer 7HK$8,426 HKD
Retailer 16HK$9,807 HKD
Retailer 11HK$10,026 HKD
Retailer 12HK$12,934 HKD
Retailer 15HK$13,411 HKD
Retailer 3HK$17,380 HKD
Retailer 9HK$18,743 HKD
Retailer 13HK$19,027 HKD
Retailer 5HK$19,564 HKD
Retailer 17HK$23,686 HKD
Retailer 10HK$28,577 HKD
Retailer 8HK$45,348 HKD
Retailer 6HK$76,088 HKD
Brilliant EarthHK$79,398 HKD

22 data points across 17 retailers

29 retailersHK$7,265 HKD to HK$79,398 HKD

A
Cheapest Retailer
-
HK$7,265 HKD
$926 USD
A
Retailer 2
-
HK$7,901 HKD
$1,007 USD
View
A
Retailer 3
-
HK$8,128 HKD
$1,036 USD
View
Final sale: no returns
A
Retailer 4
-
HK$8,426 HKD
$1,074 USD
View
A
Retailer 5
-
HK$9,807 HKD
$1,250 USD
View
A
Retailer 6
-
HK$10,026 HKD
£1,006 GBP
View
A
Retailer 7
-
HK$10,243 HKD
View
A
Retailer 8
-
HK$10,568 HKD
$1,347 USD
View
A
Retailer 9
-
HK$12,632 HKD
$1,610 USD
View
A
Retailer 10
-
HK$12,934 HKD
£1,298 GBP
View
A
Retailer 11
-
HK$13,411 HKD
€1,628 EUR
View
A
Retailer 12
-
HK$17,380 HKD
A$3,408 AUD
View
A
Retailer 13
-
HK$18,743 HKD
$2,389 USD
View
A
Retailer 14
-
HK$18,924 HKD
$2,412 USD
View
A
Retailer 15
-
HK$19,027 HKD
A$3,731 AUD
View
A
Retailer 16
-
HK$19,564 HKD
ZAR 40,284 ZAR
View
A
Retailer 17
-
HK$21,547 HKD
$2,746 USD
View
B+
Retailer 18
-
HK$23,686 HKD
$3,019 USD
View
Retailer 19
-
HK$23,686 HKD
$3,019 USD
View
Price last confirmed 20 days ago
B+
Retailer 20
-
HK$26,362 HKD
$3,360 USD
View
B+
Retailer 21
-
HK$27,536 HKD
$3,510 USD
View
B+
Retailer 22
-
HK$28,577 HKD
£2,868 GBP
View
B+
Retailer 23
-
HK$29,298 HKD
$3,734 USD
View
B+
Retailer 24
-
HK$29,615 HKD
SGD 5,101 SGD
View
B+
Retailer 25
-
HK$31,822 HKD
$4,056 USD
View
Retailer 26
-
HK$40,165 HKD
A$7,876 AUD
View
Price last confirmed 29 days ago
Retailer 27
-
HK$45,348 HKD
$5,780 USD
View
Price last confirmed 14 days ago
B
Retailer 28
-
HK$76,088 HKD
$9,698 USD
View
Most Expensive
B
Brilliant Earth
16122191A · Oct 31
HK$79,398 HKD
$10,120 USD
View
28 more retailers have this diamond
Prices start from HK$7,265 HKDSave up to HK$72,133 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.

A
3.09ct Round
HK$7,265 HKD