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Cushion|Lab Grown|IGI

3.80ct E SI1 Cushion Lab Grown Diamond

GD • E/SI1 • IGI LG655438364

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG655438364

Diamond specifications and retailer prices

From HK$4,150 HKD
$529 USD
As of October 28, 2026
Save HK$28,645 HKD (87%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: HK$32,795 HKD at Kay Jewelers · As of October 26, 2026
View at Kay Jewelers

About this 3.8ct lab-grown cushion diamond

This 3.8ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG655438364 or 655438364. Listed at 7 retailers as of October 26, 2026, with prices from HK$4,150 to HK$32,795, a HK$28,645 spread on the same certified stone. Kay Jewelers lists it at HK$32,795. 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

3.80
Carat
E
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG655438364
Dimensions9.05 × 8.98 × 6.08 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.05 mm8.98 mm3.80 ctE / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG655438364
Side View
Table 61.0%Crown 35.1°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 67.7%

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 28
Current: HK$32,795 HKD|Low: HK$2,864 HKD|High: HK$32,873 HKD|Avg: HK$16,552 HKD
Kay Jewelers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 28, 2026
Retailer 9HK$4,150 HKD
Retailer 4HK$6,317 HKD
Retailer 6HK$6,881 HKD
Retailer 2HK$6,904 HKD
Retailer 11HK$8,243 HKD
Retailer 12HK$8,513 HKD
Retailer 8HK$14,985 HKD
Retailer 10HK$16,233 HKD
Retailer 5HK$20,267 HKD
Retailer 3HK$26,129 HKD
Retailer 7HK$31,461 HKD
Kay JewelersHK$32,795 HKD

19 data points across 12 retailers

7 retailersHK$4,150 HKD to HK$32,795 HKD

A
Cheapest Retailer
-
HK$4,150 HKD
$529 USD
Final sale: no returns
B+
Retailer 2
-
HK$6,881 HKD
$877 USD
View
B+
Retailer 3
-
HK$6,904 HKD
$880 USD
View
B
Retailer 4
-
HK$14,985 HKD
$1,910 USD
View
B
Retailer 5
-
HK$20,267 HKD
£2,034 GBP
View
B
Retailer 6
-
HK$31,461 HKD
$4,010 USD
View
Most Expensive
C
Kay Jewelers
252769047 · Oct 26
HK$32,795 HKD
$4,180 USD
View
6 more retailers have this diamond
Prices start from HK$4,150 HKDSave up to HK$28,645 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
3.80ct Cushion
HK$4,150 HKD