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 $8,290 USD
£6,528 GBP
As of October 29, 2026
Save $26,521 USD (76%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $34,811 USD at Michael Trio · As of October 29, 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 29, 2026, with prices from $8,290 to $34,811, a $26,521 spread on the same certified stone. Michael Trio lists it at $34,811. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $34,811 USD|Low: $8,240 USD|High: $34,811 USD|Avg: $17,825 USD
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
October 29, 2026
Retailer 8$8,290 USD
Retailer 4$8,819 USD
Retailer 3$9,554 USD
Retailer 9$9,830 USD
Retailer 10$9,830 USD
Retailer 14$9,896 USD
Retailer 5$14,188 USD
Retailer 7$18,114 USD
Retailer 11$18,170 USD
Retailer 2$21,064 USD
Retailer 13$25,343 USD
Retailer 12$27,561 USD
Retailer 6$31,455 USD
Michael Trio$34,811 USD

37 data points across 14 retailers

14 retailers$8,290 USD to $34,811 USD

A
Cheapest Retailer
-
$8,290 USD
£6,528 GBP
B+
Retailer 2
-
$8,819 USD
View
B+
Retailer 3
-
$9,554 USD
View
Final sale: no returns
B+
Retailer 4
-
$9,830 USD
View
B+
Retailer 5
-
$9,830 USD
View
Retailer 6
-
$9,896 USD
View
Price last confirmed 17 days ago
B+
Retailer 7
-
$14,188 USD
£11,172 GBP
View
B+
Retailer 8
-
$18,114 USD
£14,263 GBP
View
B
Retailer 9
-
$18,170 USD
€17,305 EUR
View
B
Retailer 10
-
$21,064 USD
ZAR 340,289 ZAR
View
B
Retailer 11
-
$25,343 USD
View
B
Retailer 12
-
$27,561 USD
View
B
Retailer 13
-
$31,455 USD
View
Most Expensive
B
Michael Trio
5003831750 · Oct 29
$34,811 USD
SGD 47,042 SGD
View
13 more retailers have this diamond
Prices start from $8,290 USDSave up to $26,521 USD

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
$8,290 USD