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Radiant|Lab Grown|IGI

4.05ct E IF Radiant Lab Grown Diamond

EX • E/IF • IGI LG731593547

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

Certificate IGI LG731593547

Diamond specifications and retailer prices

From $4,064 SGD
$3,179 USD
As of October 30, 2026
Save $13,987 SGD (77%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $18,051 SGD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 4.05ct lab-grown radiant diamond

This 4.05ct lab-grown radiant sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG731593547 or 731593547. Listed at 22 retailers as of October 29, 2026, with prices from $4,064 to $18,051, a $13,987 spread on the same certified stone. Brilliant Earth lists it at $18,051. 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

4.05
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.9°
Pavilion angle34.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG731593547
Dimensions7.89 × 7.89 × 5.24 mm
L/W Ratio1.00
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
7.89 mm7.89 mm4.05 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG731593547
Side View
Table 65.0%Crown 43.9°Girdle: Slightly ThickPavilion 34.2°Culet: NoneDepth 66.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $18,051 SGD|Low: $2,415 SGD|High: $18,051 SGD|Avg: $5,931 SGD|+70.9%
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
October 30, 2026
Retailer 7$3,934 SGD
Retailer 2$4,064 SGD
Retailer 8$4,313 SGD
Retailer 6$4,353 SGD
Retailer 3$4,417 SGD
Retailer 9$5,690 SGD
Retailer 5$6,331 SGD
Retailer 14$7,267 SGD
Retailer 13$7,273 SGD
Retailer 10$8,964 SGD
Retailer 15$10,579 SGD
Retailer 11$10,732 SGD
Retailer 16$11,031 SGD
Retailer 12$11,723 SGD
Retailer 4$14,674 SGD
Brilliant Earth$18,051 SGD

32 data points across 16 retailers

22 retailers$4,064 SGD to $18,051 SGD

Retailer 1
-
$2,157 SGD
$1,687 USD
Price last confirmed 22 days ago
Retailer 2
-
$2,502 SGD
$1,957 USD
View
Price last confirmed 27 days ago
Retailer 3
-
$2,502 SGD
$1,957 USD
View
Price last confirmed 17 days ago
Retailer 4
-
$2,590 SGD
$2,026 USD
View
Price last confirmed 35 days ago
Retailer 5
-
$3,934 SGD
€2,931 EUR
View
Price last confirmed 7 days ago
A
Retailer 6
-
$4,064 SGD
$3,179 USD
View
Final sale: no returns
A
Retailer 7
-
$4,313 SGD
$3,374 USD
View
A
Retailer 8
-
$4,353 SGD
$3,405 USD
View
A
Retailer 9
-
$4,417 SGD
$3,455 USD
View
Retailer 10
-
$4,689 SGD
$3,668 USD
View
Price last confirmed 25 days ago
A
Retailer 11
-
$5,690 SGD
£3,504 GBP
View
A
Retailer 12
-
$6,331 SGD
$4,952 USD
View
A
Retailer 13
-
$7,267 SGD
£4,476 GBP
View
A
Retailer 14
-
$7,273 SGD
$5,689 USD
View
B+
Retailer 15
-
$8,964 SGD
ZAR 113,279 ZAR
View
B+
Retailer 16
-
$10,076 SGD
$7,882 USD
View
B
Retailer 17
-
$10,579 SGD
$8,275 USD
View
B
Retailer 18
-
$10,732 SGD
£6,610 GBP
View
B+
Retailer 19
-
$11,031 SGD
$8,629 USD
View
B+
Retailer 20
-
$11,723 SGD
$9,170 USD
View
B
Retailer 21
-
$14,674 SGD
$11,478 USD
View
Most Expensive
B
Brilliant Earth
15785857A · Oct 29
$18,051 SGD
$14,120 USD
View
21 more retailers have this diamond
Prices start from $4,064 SGDSave up to $13,987 SGD

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
4.05ct Radiant
$4,064 SGD