Radiant|Lab Grown|IGI

1.55ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG728538606

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

Certificate IGI LG728538606

Diamond specifications and retailer prices

From HK$2,330 HKD
$297 USD
As of October 30, 2026
Save HK$20,501 HKD (90%) vs most expensive(unlock to see where)
30 retailers carry this diamond
Most expensive: HK$22,831 HKD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.55ct lab-grown radiant diamond

This 1.55ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG728538606 or 728538606. Listed at 30 retailers as of October 30, 2026, with prices from HK$2,330 to HK$22,831, a HK$20,501 spread on the same certified stone. Brilliant Earth lists it at HK$22,831. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.4°
Pavilion angle34.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG728538606
Dimensions8.14 × 5.88 × 3.88 mm
L/W Ratio1.38
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
8.14 mm5.88 mm1.55 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG728538606
Side View
Table 64.0%Crown 39.4°Girdle: MediumPavilion 34.6°Culet: NoneDepth 66.0%

Caratlytics Score

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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: Oct 30
Current: HK$22,831 HKD|Low: HK$2,330 HKD|High: HK$26,283 HKD|Avg: HK$9,663 HKD|-13.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
October 31, 2026
Retailer 4HK$2,330 HKD
Retailer 22HK$2,793 HKD
Retailer 13HK$4,119 HKD
Retailer 19HK$4,218 HKD
Retailer 5HK$4,488 HKD
Retailer 11HK$4,943 HKD
Retailer 21HK$5,165 HKD
Retailer 17HK$5,487 HKD
Retailer 2HK$5,712 HKD
Retailer 7HK$6,488 HKD
Retailer 12HK$7,224 HKD
Retailer 16HK$7,446 HKD
Retailer 3HK$8,889 HKD
Retailer 9HK$11,117 HKD
Retailer 14HK$11,529 HKD
Retailer 8HK$11,770 HKD
Retailer 15HK$12,273 HKD
Retailer 18HK$12,814 HKD
Retailer 6HK$13,295 HKD
Retailer 20HK$19,261 HKD
Retailer 10HK$20,713 HKD
Brilliant EarthHK$22,831 HKD

38 data points across 22 retailers

30 retailersHK$2,330 HKD to HK$22,831 HKD

A
Cheapest Retailer
-
HK$2,330 HKD
$297 USD
Retailer 2
-
HK$2,330 HKD
$297 USD
View
Price last confirmed 24 days ago
Retailer 3
-
HK$2,479 HKD
$316 USD
View
Price last confirmed 32 days ago
A
Retailer 4
-
HK$2,793 HKD
$356 USD
View
Final sale: no returns
Retailer 5
-
HK$2,879 HKD
$367 USD
View
Price last confirmed 35 days ago
Retailer 6
-
HK$2,895 HKD
$369 USD
View
Price last confirmed 29 days ago
Retailer 7
-
HK$3,036 HKD
$387 USD
View
Price last confirmed 34 days ago
A
Retailer 8
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HK$4,119 HKD
$525 USD
View
A
Retailer 9
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HK$4,218 HKD
View
A
Retailer 10
-
HK$4,488 HKD
$572 USD
View
A
Retailer 11
-
HK$4,943 HKD
$630 USD
View
Retailer 12
-
HK$5,165 HKD
€627 EUR
View
Price last confirmed 9 days ago
A
Retailer 13
-
HK$5,487 HKD
ZAR 11,299 ZAR
View
A
Retailer 14
-
HK$5,712 HKD
£573 GBP
View
A
Retailer 15
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HK$6,488 HKD
$827 USD
View
A
Retailer 16
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HK$7,224 HKD
$921 USD
View
A
Retailer 17
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HK$7,446 HKD
A$1,460 AUD
View
B+
Retailer 18
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HK$8,889 HKD
$1,133 USD
View
Retailer 19
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HK$10,262 HKD
$1,308 USD
View
Price last confirmed 22 days ago
B+
Retailer 20
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HK$10,262 HKD
$1,308 USD
View
Retailer 21
-
HK$10,913 HKD
$1,391 USD
View
Price last confirmed 32 days ago
B+
Retailer 22
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HK$11,117 HKD
$1,417 USD
View
B+
Retailer 23
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HK$11,529 HKD
$1,469 USD
View
B+
Retailer 24
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HK$11,770 HKD
$1,500 USD
View
B+
Retailer 25
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HK$12,273 HKD
SGD 2,114 SGD
View
B+
Retailer 26
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HK$12,814 HKD
£1,286 GBP
View
Retailer 27
-
HK$13,295 HKD
A$2,607 AUD
View
Price last confirmed 27 days ago
B
Retailer 28
-
HK$19,261 HKD
$2,455 USD
View
B
Retailer 29
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HK$20,713 HKD
$2,640 USD
View
Most Expensive
B
Brilliant Earth
16223266Y · Oct 30
HK$22,831 HKD
$2,910 USD
View
29 more retailers have this diamond
Prices start from HK$2,330 HKDSave up to HK$20,501 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
1.55ct Radiant
HK$2,330 HKD