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Marquise|Lab Grown|IGI

1.21ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG739586856

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG739586856

Diamond specifications and retailer prices

From HK$3,460 HKD
$441 USD
As of November 2, 2026
Save HK$16,390 HKD (83%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: HK$19,850 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 LG739586856 or 739586856. Listed at 23 retailers as of October 31, 2026, with prices from HK$3,460 to HK$19,850, a HK$16,390 spread on the same certified stone. Brilliant Earth lists it at HK$19,850. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG739586856
Dimensions10.79 × 5.59 × 3.49 mm
L/W Ratio1.93
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
10.79 mm5.59 mm1.21 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG739586856
Side View
Table 59.0%Crown 33.3°Girdle: MediumPavilion 40°Culet: NoneDepth 62.4%

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: Nov 2
Current: HK$19,850 HKD|Low: HK$3,460 HKD|High: HK$23,223 HKD|Avg: HK$9,328 HKD|-14.5%
Brilliant Earth
Retailer 2
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Retailer 17
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Retailer 23
November 2, 2026
Retailer 16HK$3,460 HKD
Retailer 11HK$3,868 HKD
Retailer 7HK$3,876 HKD
Retailer 5HK$4,292 HKD
Retailer 23HK$4,292 HKD
Retailer 6HK$4,720 HKD
Retailer 18HK$5,414 HKD
Retailer 10HK$6,065 HKD
Retailer 4HK$6,551 HKD
Retailer 12HK$6,739 HKD
Retailer 20HK$6,805 HKD
Retailer 13HK$7,027 HKD
Retailer 2HK$7,395 HKD
Retailer 17HK$10,449 HKD
Retailer 3HK$11,525 HKD
Retailer 21HK$12,043 HKD
Retailer 9HK$12,555 HKD
Retailer 15HK$13,597 HKD
Retailer 22HK$13,785 HKD
Retailer 8HK$14,045 HKD
Retailer 14HK$15,393 HKD
Retailer 19HK$15,773 HKD
Brilliant EarthHK$19,850 HKD

39 data points across 23 retailers

23 retailersHK$3,460 HKD to HK$19,850 HKD

A
Cheapest Retailer
-
HK$3,460 HKD
$441 USD
A
Retailer 2
-
HK$3,868 HKD
$493 USD
View
Final sale: no returns
A
Retailer 3
-
HK$3,876 HKD
$494 USD
View
Retailer 4
-
HK$4,292 HKD
$547 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
HK$4,292 HKD
$547 USD
View
A
Retailer 6
-
HK$4,720 HKD
View
A
Retailer 7
-
HK$5,414 HKD
$690 USD
View
B+
Retailer 8
-
HK$6,065 HKD
$773 USD
View
B+
Retailer 9
-
HK$6,551 HKD
$835 USD
View
B+
Retailer 10
-
HK$6,739 HKD
$859 USD
View
B+
Retailer 11
-
HK$6,805 HKD
€826 EUR
View
B+
Retailer 12
-
HK$7,027 HKD
£705 GBP
View
B+
Retailer 13
-
HK$7,395 HKD
ZAR 15,228 ZAR
View
B+
Retailer 14
-
HK$10,449 HKD
A$2,049 AUD
View
B
Retailer 15
-
HK$11,525 HKD
$1,469 USD
View
B+
Retailer 16
-
HK$12,043 HKD
$1,535 USD
View
B
Retailer 17
-
HK$12,555 HKD
£1,260 GBP
View
B
Retailer 18
-
HK$13,597 HKD
SGD 2,342 SGD
View
B
Retailer 19
-
HK$13,785 HKD
$1,757 USD
View
B
Retailer 20
-
HK$14,045 HKD
$1,790 USD
View
B
Retailer 21
-
HK$15,393 HKD
$1,962 USD
View
B
Retailer 22
-
HK$15,773 HKD
£1,583 GBP
View
Most Expensive
B
Brilliant Earth
19056215A · Oct 31
HK$19,850 HKD
$2,530 USD
View
22 more retailers have this diamond
Prices start from HK$3,460 HKDSave up to HK$16,390 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$3,460 HKD