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Radiant|Lab Grown|IGI

1.28ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG836617943

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG836617943

Diamond specifications and retailer prices

From HK$1,663 HKD
As of November 4, 2026
Save HK$14,664 HKD (90%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: HK$16,327 HKD at Helzberg Diamonds · As of November 4, 2026
View at Helzberg Diamonds

About this 1.28ct lab-grown radiant diamond

This 1.28ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG836617943 or 836617943. Listed at 20 retailers as of November 4, 2026, with prices from HK$1,663 to HK$16,327, a HK$14,664 spread on the same certified stone. Helzberg Diamonds lists it at HK$16,327. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.9°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836617943
Dimensions8.00 × 5.43 × 3.57 mm
L/W Ratio1.47
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
8.00 mm5.43 mm1.28 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836617943
Side View
Table 66.0%Crown 40.9°Girdle: MediumPavilion 35.1°Culet: NoneDepth 65.7%

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: Nov 4
Current: HK$16,327 HKD|Low: HK$1,663 HKD|High: HK$19,379 HKD|Avg: HK$6,137 HKD
Helzberg Diamonds
Retailer 2
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Retailer 6
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Retailer 8
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Retailer 11
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Retailer 17
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Retailer 19
Retailer 20
Retailer 21
November 4, 2026
Retailer 6HK$1,663 HKD
Retailer 11HK$1,859 HKD
Retailer 3HK$1,922 HKD
Retailer 4HK$2,056 HKD
Retailer 8HK$2,056 HKD
Retailer 21HK$2,126 HKD
Retailer 7HK$3,538 HKD
Retailer 16HK$3,546 HKD
Retailer 18HK$3,742 HKD
Retailer 2HK$3,766 HKD
Retailer 10HK$3,986 HKD
Retailer 13HK$5,029 HKD
Retailer 15HK$5,390 HKD
Retailer 5HK$6,551 HKD
Retailer 9HK$6,614 HKD
Retailer 12HK$7,030 HKD
Retailer 14HK$7,854 HKD
Retailer 17HK$8,246 HKD
Retailer 20HK$14,554 HKD
Retailer 19HK$14,672 HKD
Helzberg DiamondsHK$16,327 HKD

28 data points across 21 retailers

20 retailersHK$1,663 HKD to HK$16,327 HKD

A
Cheapest Retailer
-
HK$1,663 HKD
A
Retailer 2
-
HK$1,859 HKD
View
Final sale: no returns
A
Retailer 3
-
HK$1,922 HKD
View
A
Retailer 4
-
HK$2,056 HKD
View
Retailer 5
-
HK$2,056 HKD
View
Price last confirmed 10 days ago
A
Retailer 6
-
HK$3,538 HKD
View
A
Retailer 7
-
HK$3,546 HKD
View
A
Retailer 8
-
HK$3,742 HKD
View
A
Retailer 9
-
HK$3,766 HKD
View
A
Retailer 10
-
HK$3,986 HKD
View
A
Retailer 11
-
HK$5,029 HKD
View
A
Retailer 12
-
HK$5,390 HKD
View
B+
Retailer 13
-
HK$6,551 HKD
View
B+
Retailer 14
-
HK$6,614 HKD
View
B+
Retailer 15
-
HK$7,030 HKD
View
B+
Retailer 16
-
HK$7,783 HKD
View
B+
Retailer 17
-
HK$8,246 HKD
View
Retailer 18
-
HK$14,554 HKD
View
Price last confirmed 17 days ago
B
Retailer 19
-
HK$14,672 HKD
View
Most Expensive
B
Helzberg Diamonds
ZXZOJMMHNPKJ · Nov 4
HK$16,327 HKD
$2,081 USD
View
19 more retailers have this diamond
Prices start from HK$1,663 HKDSave up to HK$14,664 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 Radiant
HK$1,663 HKD