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Radiant|Lab Grown|IGI

1.28ct D IF Radiant Lab Grown Diamond

VG • D/IF • IGI LG754594875

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

Certificate IGI LG754594875

Diamond specifications and retailer prices

From HK$2,016 HKD
As of November 4, 2026
Save HK$14,381 HKD (88%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: HK$16,398 HKD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

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 very-good cut grade and certified by IGI LG754594875 or 754594875. Listed at 25 retailers as of November 4, 2026, with prices from HK$2,016 to HK$16,398, a HK$14,381 spread on the same certified stone. Brilliant Earth lists it at HK$16,398. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.28
Carat
D
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.5°
Pavilion angle32.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754594875
Dimensions7.95 × 5.39 × 3.46 mm
L/W Ratio1.47
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
7.95 mm5.39 mm1.28 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754594875
Side View
Table 60.0%Crown 42.5°Girdle: MED-STKPavilion 32.7°Culet: NoneDepth 64.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: HK$16,398 HKD|Low: HK$2,016 HKD|High: HK$17,810 HKD|Avg: HK$6,521 HKD|-7.9%
Brilliant Earth
Retailer 2
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Retailer 22
November 4, 2026
Retailer 16HK$2,016 HKD
Retailer 6HK$2,338 HKD
Retailer 2HK$2,558 HKD
Retailer 14HK$2,636 HKD
Retailer 13HK$2,911 HKD
Retailer 21HK$3,531 HKD
Retailer 11HK$3,884 HKD
Retailer 4HK$4,143 HKD
Retailer 9HK$4,543 HKD
Retailer 3HK$4,715 HKD
Retailer 7HK$5,523 HKD
Retailer 8HK$6,120 HKD
Retailer 19HK$7,665 HKD
Retailer 18HK$8,026 HKD
Retailer 17HK$8,419 HKD
Retailer 22HK$8,434 HKD
Retailer 5HK$9,266 HKD
Retailer 15HK$9,980 HKD
Retailer 10HK$10,568 HKD
Retailer 20HK$10,772 HKD
Retailer 12HK$14,593 HKD
Brilliant EarthHK$16,398 HKD

31 data points across 22 retailers

25 retailersHK$2,016 HKD to HK$16,398 HKD

A
Cheapest Retailer
-
HK$2,016 HKD
A
Retailer 2
-
HK$2,338 HKD
View
A
Retailer 3
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HK$2,495 HKD
View
Final sale: no returns
A
Retailer 4
-
HK$2,558 HKD
View
A
Retailer 5
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HK$2,636 HKD
View
A
Retailer 6
-
HK$2,911 HKD
View
A
Retailer 7
-
HK$3,531 HKD
View
A
Retailer 8
-
HK$3,884 HKD
View
A
Retailer 9
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HK$4,143 HKD
View
A
Retailer 10
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HK$4,543 HKD
View
A
Retailer 11
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HK$4,621 HKD
View
A
Retailer 12
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HK$4,715 HKD
View
B+
Retailer 13
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HK$5,523 HKD
View
B+
Retailer 14
-
HK$6,120 HKD
View
B+
Retailer 15
-
HK$6,708 HKD
View
B
Retailer 16
-
HK$7,665 HKD
View
B+
Retailer 17
-
HK$8,026 HKD
View
B+
Retailer 18
-
HK$8,419 HKD
View
B+
Retailer 19
-
HK$8,434 HKD
View
B
Retailer 20
-
HK$9,266 HKD
View
Retailer 21
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HK$9,980 HKD
View
Price last confirmed 27 days ago
B
Retailer 22
-
HK$10,568 HKD
View
B
Retailer 23
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HK$10,772 HKD
View
Retailer 24
-
HK$14,593 HKD
View
Price last confirmed 17 days ago
Most Expensive
B
Brilliant Earth
17981344A · Nov 4
HK$16,398 HKD
$2,090 USD
View
24 more retailers have this diamond
Prices start from HK$2,016 HKDSave up to HK$14,381 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$2,016 HKD