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Marquise|Lab Grown|IGI

1.21ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG790612052

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG790612052

Diamond specifications and retailer prices

From HK$4,174 HKD
$532 USD
As of October 30, 2026
Save HK$19,049 HKD (82%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: HK$23,223 HKD at Brilliant Earth · As of October 31, 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 D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG790612052 or 790612052. Listed at 23 retailers as of October 30, 2026, with prices from HK$4,174 to HK$23,223, a HK$19,049 spread on the same certified stone. Brilliant Earth lists it at HK$23,223. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG790612052
Dimensions10.72 × 5.61 × 3.54 mm
L/W Ratio1.91
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
10.72 mm5.61 mm1.21 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG790612052
Side View
Table 56.0%Crown 34.7°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 63.2%

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$23,223 HKD|Low: HK$4,009 HKD|High: HK$23,223 HKD|Avg: HK$10,608 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
Retailer 16
Retailer 17
Retailer 18
November 1, 2026
Retailer 17HK$4,174 HKD
Retailer 9HK$4,668 HKD
Retailer 6HK$4,676 HKD
Retailer 3HK$5,178 HKD
Retailer 14HK$6,237 HKD
Retailer 8HK$6,802 HKD
Retailer 15HK$7,876 HKD
Retailer 5HK$8,018 HKD
Retailer 11HK$8,038 HKD
Retailer 13HK$8,903 HKD
Retailer 18HK$12,435 HKD
Retailer 12HK$12,627 HKD
Retailer 16HK$13,369 HKD
Retailer 4HK$13,628 HKD
Retailer 10HK$15,066 HKD
Retailer 7HK$16,378 HKD
Retailer 2HK$21,622 HKD
Brilliant EarthHK$23,223 HKD

42 data points across 18 retailers

23 retailersHK$4,174 HKD to HK$23,223 HKD

A
Cheapest Retailer
-
HK$4,174 HKD
$532 USD
A
Retailer 2
-
HK$4,668 HKD
$595 USD
View
Final sale: no returns
A
Retailer 3
-
HK$4,676 HKD
$596 USD
View
Retailer 4
-
HK$5,178 HKD
$660 USD
View
Price last confirmed 17 days ago
A
Retailer 5
-
HK$5,178 HKD
$660 USD
View
A
Retailer 6
-
HK$5,624 HKD
View
B+
Retailer 7
-
HK$6,237 HKD
$795 USD
View
B+
Retailer 8
-
HK$6,794 HKD
$866 USD
View
B+
Retailer 9
-
HK$6,802 HKD
$867 USD
View
B+
Retailer 10
-
HK$7,876 HKD
€956 EUR
View
B+
Retailer 11
-
HK$8,018 HKD
$1,022 USD
View
B+
Retailer 12
-
HK$8,038 HKD
£807 GBP
View
B+
Retailer 13
-
HK$8,903 HKD
ZAR 18,332 ZAR
View
Retailer 14
-
HK$12,435 HKD
$1,585 USD
View
Price last confirmed 25 days ago
B
Retailer 15
-
HK$12,627 HKD
A$2,476 AUD
View
B
Retailer 16
-
HK$13,369 HKD
$1,704 USD
View
B
Retailer 17
-
HK$13,628 HKD
$1,737 USD
View
B
Retailer 18
-
HK$15,066 HKD
£1,512 GBP
View
B
Retailer 19
-
HK$16,378 HKD
SGD 2,821 SGD
View
B
Retailer 20
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HK$16,829 HKD
$2,145 USD
View
B
Retailer 21
-
HK$17,689 HKD
$2,255 USD
View
B
Retailer 22
-
HK$21,622 HKD
£2,170 GBP
View
Most Expensive
B
Brilliant Earth
19082024A · Oct 31
HK$23,223 HKD
$2,960 USD
View
22 more retailers have this diamond
Prices start from HK$4,174 HKDSave up to HK$19,049 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$4,174 HKD