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Marquise|Lab Grown|IGI

1.21ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG681583490

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG681583490

Diamond specifications and retailer prices

From HK$3,201 HKD
As of November 4, 2026
Save HK$12,647 HKD (80%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: HK$15,849 HKD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.21ct lab-grown marquise diamond

This 1.21ct lab-grown marquise sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG681583490 or 681583490. Listed at 22 retailers as of November 4, 2026, with prices from HK$3,201 to HK$15,849, a HK$12,647 spread on the same certified stone. Brilliant Earth lists it at HK$15,849. 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
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG681583490
Dimensions10.98 × 5.56 × 3.46 mm
L/W Ratio1.97
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
10.98 mm5.56 mm1.21 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG681583490
Side View
Table 57.0%Crown 33.2°Girdle: STK-THKPavilion 40.1°Culet: NoneDepth 62.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: HK$15,849 HKD|Low: HK$3,201 HKD|High: HK$20,101 HKD|Avg: HK$8,528 HKD|-1.5%
Brilliant Earth
Retailer 2
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Retailer 16
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Retailer 22
November 4, 2026
Retailer 15HK$3,201 HKD
Retailer 10HK$3,578 HKD
Retailer 5HK$3,586 HKD
Retailer 4HK$3,970 HKD
Retailer 21HK$3,970 HKD
Retailer 6HK$4,315 HKD
Retailer 17HK$5,139 HKD
Retailer 9HK$5,775 HKD
Retailer 11HK$6,292 HKD
Retailer 18HK$6,324 HKD
Retailer 2HK$6,465 HKD
Retailer 3HK$6,598 HKD
Retailer 13HK$6,849 HKD
Retailer 22HK$11,149 HKD
Retailer 7HK$11,596 HKD
Retailer 14HK$12,632 HKD
Retailer 19HK$12,710 HKD
Retailer 20HK$12,773 HKD
Retailer 8HK$13,048 HKD
Retailer 12HK$14,577 HKD
Retailer 16HK$15,519 HKD
Brilliant EarthHK$15,849 HKD

41 data points across 22 retailers

22 retailersHK$3,201 HKD to HK$15,849 HKD

A
Cheapest Retailer
-
HK$3,201 HKD
A
Retailer 2
-
HK$3,578 HKD
View
Final sale: no returns
A
Retailer 3
-
HK$3,586 HKD
View
Retailer 4
-
HK$3,970 HKD
View
Price last confirmed 10 days ago
A
Retailer 5
-
HK$3,970 HKD
View
A
Retailer 6
-
HK$4,315 HKD
View
A
Retailer 7
-
HK$5,139 HKD
View
A
Retailer 8
-
HK$5,775 HKD
View
B+
Retailer 9
-
HK$6,292 HKD
View
Retailer 10
-
HK$6,324 HKD
View
Price last confirmed 8 days ago
B+
Retailer 11
-
HK$6,465 HKD
View
B+
Retailer 12
-
HK$6,598 HKD
View
B+
Retailer 13
-
HK$6,849 HKD
View
B
Retailer 14
-
HK$11,149 HKD
View
B
Retailer 15
-
HK$11,596 HKD
View
B
Retailer 16
-
HK$12,632 HKD
View
B+
Retailer 17
-
HK$12,710 HKD
View
B
Retailer 18
-
HK$12,773 HKD
View
B
Retailer 19
-
HK$13,048 HKD
View
B
Retailer 20
-
HK$14,577 HKD
View
B
Retailer 21
-
HK$15,519 HKD
View
Most Expensive
B
Brilliant Earth
19056507A · Nov 4
HK$15,849 HKD
$2,020 USD
View
21 more retailers have this diamond
Prices start from HK$3,201 HKDSave up to HK$12,647 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 Marquise
HK$3,201 HKD