CaratHunter
Plans
Cushion|Lab Grown|IGI

3.09ct E IF Cushion Lab Grown Diamond

EX • E/IF • IGI LG756522143

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG756522143

Diamond specifications and retailer prices

From HK$12,129 HKD
$1,546 USD
As of October 29, 2026
Save HK$68,524 HKD (85%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: HK$80,654 HKD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 3.09ct lab-grown cushion diamond

This 3.09ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG756522143 or 756522143. Listed at 17 retailers as of October 29, 2026, with prices from HK$12,129 to HK$80,654, a HK$68,524 spread on the same certified stone. Brilliant Earth lists it at HK$80,654. 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
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG756522143
Dimensions7.30 × 7.30 × 4.93 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.30 mm7.30 mm3.09 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG756522143
Side View
Table 65.0%Crown 35.8°Girdle: MED-THKPavilion 35.9°Culet: NoneDepth 67.5%

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: Oct 29
Current: HK$80,654 HKD|Low: HK$12,129 HKD|High: HK$83,164 HKD|Avg: HK$30,708 HKD|-0.1%
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
October 30, 2026
Retailer 4HK$12,129 HKD
Retailer 8HK$12,985 HKD
Retailer 16HK$13,926 HKD
Retailer 14HK$14,318 HKD
Retailer 2HK$17,723 HKD
Retailer 7HK$18,579 HKD
Retailer 11HK$22,745 HKD
Retailer 17HK$24,941 HKD
Retailer 13HK$28,421 HKD
Retailer 10HK$29,174 HKD
Retailer 5HK$30,370 HKD
Retailer 3HK$33,862 HKD
Retailer 12HK$36,070 HKD
Retailer 15HK$38,920 HKD
Retailer 6HK$44,174 HKD
Retailer 9HK$61,706 HKD
Brilliant EarthHK$80,654 HKD

36 data points across 17 retailers

17 retailersHK$12,129 HKD to HK$80,654 HKD

A
Cheapest Retailer
-
HK$12,129 HKD
$1,546 USD
Final sale: no returns
Retailer 2
-
HK$12,985 HKD
$1,655 USD
View
Price last confirmed 18 days ago
A
Retailer 3
-
HK$13,926 HKD
$1,775 USD
View
A
Retailer 4
-
HK$14,318 HKD
$1,825 USD
View
A
Retailer 5
-
HK$17,723 HKD
£1,779 GBP
View
A
Retailer 6
-
HK$18,579 HKD
$2,368 USD
View
A
Retailer 7
-
HK$22,745 HKD
€2,761 EUR
View
A
Retailer 8
-
HK$24,941 HKD
$3,179 USD
View
Retailer 9
-
HK$28,421 HKD
A$5,573 AUD
View
Price last confirmed 8 days ago
A
Retailer 10
-
HK$29,174 HKD
ZAR 60,072 ZAR
View
A
Retailer 11
-
HK$30,370 HKD
£3,048 GBP
View
A
Retailer 12
-
HK$33,862 HKD
$4,316 USD
View
B+
Retailer 13
-
HK$36,070 HKD
£3,620 GBP
View
B+
Retailer 14
-
HK$38,920 HKD
$4,961 USD
View
B+
Retailer 15
-
HK$44,174 HKD
$5,630 USD
View
Retailer 16
-
HK$61,706 HKD
A$12,100 AUD
View
Price last confirmed 22 days ago
Most Expensive
B
Brilliant Earth
17439238A · Oct 29
HK$80,654 HKD
$10,280 USD
View
16 more retailers have this diamond
Prices start from HK$12,129 HKDSave up to HK$68,524 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 Cushion
HK$12,129 HKD