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Cushion|Lab Grown|IGI

3.05ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG529243211

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG529243211

Diamond specifications and retailer prices

From HK$4,943 HKD
$630 USD
As of October 29, 2026
Save HK$30,912 HKD (86%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: HK$35,855 HKD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 3.05ct lab-grown cushion diamond

This 3.05ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG529243211 or 529243211. Listed at 8 retailers as of October 29, 2026, with prices from HK$4,943 to HK$35,855, a HK$30,912 spread on the same certified stone. Brilliant Earth lists it at HK$35,855. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

3.05
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle34.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG529243211
Dimensions8.60 × 7.86 × 5.22 mm
L/W Ratio1.09
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
8.60 mm7.86 mm3.05 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG529243211
Side View
Table 64.5%Crown 33°Girdle: THK-VTKPavilion 34.3°Culet: NoneDepth 66.4%

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$35,855 HKD|Low: HK$3,397 HKD|High: HK$36,953 HKD|Avg: HK$13,855 HKD|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 7HK$4,943 HKD
Retailer 4HK$6,316 HKD
Retailer 6HK$7,642 HKD
Retailer 5HK$8,434 HKD
Retailer 2HK$8,539 HKD
Retailer 3HK$23,884 HKD
Brilliant EarthHK$35,855 HKD

40 data points across 7 retailers

8 retailersHK$4,943 HKD to HK$35,855 HKD

A
Cheapest Retailer
-
HK$4,943 HKD
$630 USD
Final sale: no returns
A
Retailer 2
-
HK$6,316 HKD
$805 USD
View
A
Retailer 3
-
HK$7,642 HKD
$974 USD
View
B+
Retailer 4
-
HK$8,434 HKD
$1,075 USD
View
A
Retailer 5
-
HK$8,539 HKD
£857 GBP
View
B
Retailer 6
-
HK$17,675 HKD
View
B
Retailer 7
-
HK$23,884 HKD
£2,397 GBP
View
Most Expensive
B
Brilliant Earth
17971335A · Oct 29
HK$35,855 HKD
$4,570 USD
View
7 more retailers have this diamond
Prices start from HK$4,943 HKDSave up to HK$30,912 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
3.05ct Cushion
HK$4,943 HKD