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Radiant|Lab Grown|IGI

4.89ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG731557728

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

Certificate IGI LG731557728

Diamond specifications and retailer prices

From HK$64,669 HKD
£6,490 GBP
As of November 1, 2026
Save HK$208,448 HKD (76%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$273,117 HKD at Michael Trio · As of October 31, 2026
View at Michael Trio

About this 4.89ct lab-grown radiant diamond

This 4.89ct lab-grown radiant sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG731557728 or 731557728. Listed at 14 retailers as of October 31, 2026, with prices from HK$64,669 to HK$273,117, a HK$208,448 spread on the same certified stone. Michael Trio lists it at HK$273,117. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.89
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.8°
Pavilion angle34.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG731557728
Dimensions9.34 × 9.14 × 6.15 mm
L/W Ratio1.02
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.34 mm9.14 mm4.89 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG731557728
Side View
Table 68.0%Crown 42.8°Girdle: Slightly ThickPavilion 34.8°Culet: NoneDepth 67.3%

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 1
Current: HK$273,117 HKD|Low: HK$64,645 HKD|High: HK$273,117 HKD|Avg: HK$139,613 HKD
Michael Trio
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
November 1, 2026
Retailer 7HK$64,669 HKD
Retailer 4HK$69,191 HKD
Retailer 3HK$74,958 HKD
Retailer 10HK$76,927 HKD
Retailer 12HK$77,123 HKD
Retailer 14HK$77,641 HKD
Retailer 5HK$111,318 HKD
Retailer 2HK$141,360 HKD
Retailer 8HK$142,023 HKD
Retailer 9HK$142,921 HKD
Retailer 11HK$165,261 HKD
Retailer 13HK$216,234 HKD
Retailer 6HK$246,785 HKD
Michael TrioHK$273,117 HKD

40 data points across 14 retailers

14 retailersHK$64,669 HKD to HK$273,117 HKD

A
Cheapest Retailer
-
HK$64,669 HKD
£6,490 GBP
B+
Retailer 2
-
HK$69,191 HKD
$8,819 USD
View
B+
Retailer 3
-
HK$74,958 HKD
$9,554 USD
View
Final sale: no returns
B+
Retailer 4
-
HK$76,927 HKD
$9,805 USD
View
B+
Retailer 5
-
HK$77,123 HKD
$9,830 USD
View
Retailer 6
-
HK$77,641 HKD
$9,896 USD
View
Price last confirmed 20 days ago
B
Retailer 7
-
HK$111,318 HKD
£11,172 GBP
View
B+
Retailer 8
-
HK$141,360 HKD
£14,187 GBP
View
B
Retailer 9
-
HK$142,023 HKD
$18,102 USD
View
B
Retailer 10
-
HK$142,921 HKD
€17,349 EUR
View
B
Retailer 11
-
HK$165,261 HKD
ZAR 340,289 ZAR
View
B
Retailer 12
-
HK$216,234 HKD
$27,561 USD
View
B
Retailer 13
-
HK$246,785 HKD
$31,455 USD
View
Most Expensive
B
Michael Trio
5003831750 · Oct 31
HK$273,117 HKD
SGD 47,042 SGD
View
13 more retailers have this diamond
Prices start from HK$64,669 HKDSave up to HK$208,448 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
4.89ct Radiant
HK$64,669 HKD