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Cushion|Lab Grown|IGI

1.21ct E FL Cushion Lab Grown Diamond

ID • E/FL • IGI LG840632427

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG840632427

Diamond specifications and retailer prices

From HK$3,382 HKD
$431 USD
As of October 30, 2026
Save HK$16,705 HKD (83%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$20,087 HKD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.21ct lab-grown cushion diamond

This 1.21ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG840632427 or 840632427. Listed at 15 retailers as of October 29, 2026, with prices from HK$3,382 to HK$20,087, a HK$16,705 spread on the same certified stone. Brilliant Earth lists it at HK$20,087. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840632427
Dimensions7.60 × 5.33 × 3.64 mm
L/W Ratio1.43
Girdle conditionFaceted
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
7.60 mm5.33 mm1.21 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840632427
Side View
Table 60.0%Crown 35.1°Girdle: STK-THKPavilion 35°Culet: NoneDepth 68.3%

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 30
Current: HK$20,087 HKD|Low: HK$3,382 HKD|High: HK$20,087 HKD|Avg: HK$9,705 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
October 30, 2026
Retailer 14HK$3,382 HKD
Retailer 2HK$3,967 HKD
Retailer 3HK$5,563 HKD
Retailer 11HK$5,649 HKD
Retailer 4HK$5,955 HKD
Retailer 9HK$6,031 HKD
Retailer 10HK$6,428 HKD
Retailer 13HK$6,536 HKD
Retailer 8HK$6,773 HKD
Retailer 5HK$11,909 HKD
Retailer 6HK$12,044 HKD
Retailer 15HK$12,321 HKD
Retailer 12HK$14,638 HKD
Retailer 7HK$17,364 HKD
Brilliant EarthHK$20,087 HKD

17 data points across 15 retailers

15 retailersHK$3,382 HKD to HK$20,087 HKD

A
Cheapest Retailer
-
HK$3,382 HKD
$431 USD
Final sale: no returns
A
Retailer 2
-
HK$3,967 HKD
£398 GBP
View
A
Retailer 3
-
HK$5,563 HKD
$709 USD
View
A
Retailer 4
-
HK$5,649 HKD
$720 USD
View
A
Retailer 5
-
HK$5,955 HKD
$759 USD
View
A
Retailer 6
-
HK$6,031 HKD
€732 EUR
View
A
Retailer 7
-
HK$6,428 HKD
ZAR 13,235 ZAR
View
A
Retailer 8
-
HK$6,536 HKD
$833 USD
View
A
Retailer 9
-
HK$6,773 HKD
£680 GBP
View
B+
Retailer 10
-
HK$11,909 HKD
SGD 2,051 SGD
View
Retailer 11
-
HK$12,044 HKD
$1,535 USD
View
Price last confirmed 15 days ago
B+
Retailer 12
-
HK$12,321 HKD
$1,570 USD
View
B+
Retailer 13
-
HK$14,638 HKD
£1,469 GBP
View
B
Retailer 14
-
HK$17,364 HKD
$2,213 USD
View
Most Expensive
B
Brilliant Earth
21826974A · Oct 29
HK$20,087 HKD
$2,560 USD
View
14 more retailers have this diamond
Prices start from HK$3,382 HKDSave up to HK$16,705 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
1.21ct Cushion
HK$3,382 HKD