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Cushion|Lab Grown|IGI

3.50ct E SI1 Cushion Lab Grown Diamond

VG • E/SI1 • IGI LG807652606

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG807652606

Diamond specifications and retailer prices

From HK$3,766 HKD
$480 USD
As of October 27, 2026
Save HK$17,968 HKD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$21,735 HKD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 3.5ct lab-grown cushion diamond

This 3.5ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG807652606 or 807652606. Listed at 14 retailers as of October 27, 2026, with prices from HK$3,766 to HK$21,735, a HK$17,968 spread on the same certified stone. Brilliant Earth lists it at HK$21,735. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

3.50
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle29.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG807652606
Dimensions10.68 × 7.54 × 4.74 mm
L/W Ratio1.42
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.68 mm7.54 mm3.50 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG807652606
Side View
Table 67.0%Crown 36.4°Girdle: MED-THKPavilion 29.4°Culet: NoneDepth 62.9%

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: Oct 27
Current: HK$21,735 HKD|Low: HK$3,766 HKD|High: HK$40,958 HKD|Avg: HK$11,636 HKD|-46.9%
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
October 30, 2026
Retailer 5HK$3,766 HKD
Retailer 7HK$4,520 HKD
Retailer 10HK$5,133 HKD
Retailer 9HK$6,316 HKD
Retailer 2HK$6,344 HKD
Retailer 14HK$6,583 HKD
Retailer 4HK$6,685 HKD
Retailer 11HK$6,853 HKD
Retailer 13HK$10,114 HKD
Retailer 12HK$10,600 HKD
Retailer 8HK$13,140 HKD
Retailer 3HK$15,376 HKD
Retailer 6HK$21,028 HKD
Brilliant EarthHK$21,735 HKD

35 data points across 14 retailers

14 retailersHK$3,766 HKD to HK$21,735 HKD

A
Cheapest Retailer
-
HK$3,766 HKD
$480 USD
Final sale: no returns
A
Retailer 2
-
HK$4,520 HKD
View
A
Retailer 3
-
HK$5,133 HKD
£515 GBP
View
B+
Retailer 4
-
HK$6,316 HKD
$805 USD
View
A
Retailer 5
-
HK$6,344 HKD
€770 EUR
View
B
Retailer 6
-
HK$6,583 HKD
$839 USD
View
A
Retailer 7
-
HK$6,685 HKD
$852 USD
View
A
Retailer 8
-
HK$6,853 HKD
£688 GBP
View
B+
Retailer 9
-
HK$10,114 HKD
$1,289 USD
View
B+
Retailer 10
-
HK$10,600 HKD
$1,351 USD
View
B+
Retailer 11
-
HK$13,140 HKD
SGD 2,263 SGD
View
B+
Retailer 12
-
HK$15,376 HKD
£1,543 GBP
View
B
Retailer 13
-
HK$21,028 HKD
$2,680 USD
View
Most Expensive
B
Brilliant Earth
20143830A · Oct 30
HK$21,735 HKD
$2,770 USD
View
13 more retailers have this diamond
Prices start from HK$3,766 HKDSave up to HK$17,968 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
3.50ct Cushion
HK$3,766 HKD