CaratHunter
Plans
Round|Lab Grown|IGI

1.21ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG781617863

Shape and cutting style on the report: Round brilliant

Certificate IGI LG781617863

Diamond specifications and retailer prices

From HK$3,083 HKD
$393 USD
As of October 29, 2026
Save HK$18,177 HKD (85%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: HK$21,260 HKD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.21ct lab-grown round diamond

This 1.21ct lab-grown round sits in the classic one-carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG781617863 or 781617863. Listed at 22 retailers as of October 28, 2026, with prices from HK$3,083 to HK$21,260, a HK$18,177 spread on the same certified stone. Brilliant Earth lists it at HK$21,260. 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
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG781617863
Dimensions6.82 × 6.88 × 4.23 mm
L/W Ratio1.01
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
6.82 mm6.88 mm1.21 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG781617863
Side View
Table 56.0%Crown 35.2°Girdle: MediumPavilion 40.5°Culet: NoneDepth 61.7%

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 29
Current: HK$21,260 HKD|Low: HK$3,452 HKD|High: HK$21,888 HKD|Avg: HK$8,303 HKD|-2.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 29, 2026
Retailer 3HK$3,452 HKD
Retailer 10HK$3,828 HKD
Retailer 8HK$4,982 HKD
Retailer 4HK$5,139 HKD
Retailer 12HK$5,641 HKD
Retailer 2HK$6,238 HKD
Retailer 7HK$6,575 HKD
Retailer 6HK$6,705 HKD
Retailer 9HK$9,194 HKD
Retailer 11HK$12,180 HKD
Retailer 5HK$15,035 HKD
Brilliant EarthHK$21,260 HKD

41 data points across 12 retailers

22 retailersHK$3,083 HKD to HK$21,260 HKD

A
Cheapest Retailer
-
HK$3,083 HKD
$393 USD
A
Retailer 2
-
HK$3,452 HKD
$440 USD
View
Final sale: no returns
A
Retailer 3
-
HK$3,452 HKD
$440 USD
View
A
Retailer 4
-
HK$3,828 HKD
$488 USD
View
A
Retailer 5
-
HK$3,828 HKD
$488 USD
View
A
Retailer 6
-
HK$4,218 HKD
View
A
Retailer 7
-
HK$4,982 HKD
$635 USD
View
B+
Retailer 8
-
HK$5,139 HKD
$655 USD
View
B+
Retailer 9
-
HK$5,641 HKD
$719 USD
View
B+
Retailer 10
-
HK$5,962 HKD
$760 USD
View
B+
Retailer 11
-
HK$6,238 HKD
£626 GBP
View
B+
Retailer 12
-
HK$6,575 HKD
ZAR 13,540 ZAR
View
B+
Retailer 13
-
HK$6,705 HKD
€814 EUR
View
B
Retailer 14
-
HK$9,194 HKD
$1,172 USD
View
B
Retailer 15
-
HK$12,180 HKD
SGD 2,098 SGD
View
B
Retailer 16
-
HK$12,301 HKD
$1,568 USD
View
B
Retailer 17
-
HK$12,559 HKD
$1,601 USD
View
Price last confirmed 80 days ago
B
Retailer 18
-
HK$12,587 HKD
$1,604 USD
View
B
Retailer 19
-
HK$14,011 HKD
$1,786 USD
View
B
Retailer 20
-
HK$14,203 HKD
$1,810 USD
View
B
Retailer 21
-
HK$15,035 HKD
£1,509 GBP
View
Most Expensive
B
Brilliant Earth
19001902A · Oct 28
HK$21,260 HKD
$2,710 USD
View
21 more retailers have this diamond
Prices start from HK$3,083 HKDSave up to HK$18,177 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 Round
HK$3,083 HKD