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Round|Lab Grown|IGI

1.28ct F FL Round Lab Grown Diamond

ID • F/FL • IGI LG840635053

Shape and cutting style on the report: Round brilliant

Certificate IGI LG840635053

Diamond specifications and retailer prices

From HK$2,071 HKD
As of November 5, 2026
Save HK$14,702 HKD (88%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: HK$16,773 HKD at Helzberg Diamonds · As of November 4, 2026
View at Helzberg Diamonds

About this 1.28ct lab-grown round diamond

This 1.28ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG840635053 or 840635053. Listed at 22 retailers as of November 4, 2026, with prices from HK$2,071 to HK$16,773, a HK$14,702 spread on the same certified stone. Helzberg Diamonds lists it at HK$16,773. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
F
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840635053
Dimensions6.96 × 7.00 × 4.27 mm
L/W Ratio1.01
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
6.96 mm7.00 mm1.28 ctF / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840635053
Side View
Table 55.0%Crown 33.1°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.2%

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: Nov 5
Current: HK$16,773 HKD|Low: HK$2,071 HKD|High: HK$19,848 HKD|Avg: HK$6,935 HKD
Helzberg Diamonds
Retailer 2
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Retailer 22
November 6, 2026
Retailer 21HK$2,071 HKD
Retailer 16HK$2,314 HKD
Retailer 5HK$2,401 HKD
Retailer 6HK$2,565 HKD
Retailer 11HK$2,605 HKD
Retailer 19HK$3,805 HKD
Retailer 13HK$4,111 HKD
Retailer 17HK$4,268 HKD
Retailer 9HK$4,291 HKD
Retailer 7HK$4,487 HKD
Retailer 12HK$4,589 HKD
Retailer 2HK$4,817 HKD
Retailer 20HK$5,578 HKD
Retailer 22HK$7,884 HKD
Retailer 4HK$8,245 HKD
Retailer 14HK$8,394 HKD
Retailer 3HK$8,645 HKD
Retailer 15HK$9,187 HKD
Retailer 10HK$10,489 HKD
Retailer 18HK$11,258 HKD
Retailer 8HK$13,886 HKD
Helzberg DiamondsHK$16,773 HKD

21 data points across 22 retailers

22 retailersHK$2,071 HKD to HK$16,773 HKD

A
Cheapest Retailer
-
HK$2,071 HKD
A
Retailer 2
-
HK$2,314 HKD
View
Final sale: no returns
A
Retailer 3
-
HK$2,401 HKD
View
A
Retailer 4
-
HK$2,565 HKD
View
Retailer 5
-
HK$2,605 HKD
View
Price last confirmed 12 days ago
A
Retailer 6
-
HK$3,805 HKD
View
A
Retailer 7
-
HK$4,111 HKD
View
A
Retailer 8
-
HK$4,268 HKD
View
A
Retailer 9
-
HK$4,291 HKD
View
A
Retailer 10
-
HK$4,487 HKD
View
A
Retailer 11
-
HK$4,589 HKD
View
A
Retailer 12
-
HK$4,817 HKD
View
B+
Retailer 13
-
HK$5,578 HKD
View
B+
Retailer 14
-
HK$7,884 HKD
View
B+
Retailer 15
-
HK$8,245 HKD
View
B
Retailer 16
-
HK$8,394 HKD
View
B+
Retailer 17
-
HK$8,645 HKD
View
B
Retailer 18
-
HK$9,187 HKD
View
Retailer 19
-
HK$10,489 HKD
View
Price last confirmed 8 days ago
B
Retailer 20
-
HK$11,258 HKD
View
B
Retailer 21
-
HK$13,886 HKD
View
Most Expensive
B
Helzberg Diamonds
ZXZOKGMJLGLJ · Nov 4
HK$16,773 HKD
$2,138 USD
View
21 more retailers have this diamond
Prices start from HK$2,071 HKDSave up to HK$14,702 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
1.28ct Round
HK$2,071 HKD