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Radiant|Lab Grown|IGI

4.09ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG681578828

Certificate IGI LG681578828

Diamond specifications and retailer prices

From $3,667 USD
Save $13,077 USD (78%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $16,744 USD at With Clarity
View at With Clarity

About this 4.09ct lab-grown radiant diamond

This 4.09ct 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 LG681578828 or 681578828. Listed at 25 retailers, with prices from $3,667 to $16,744 at With Clarity, a $13,077 spread on the same certified stone. 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

4.09
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.9°
Pavilion angle34°
OriginLab Grown
Grading LabIGI
CertificateIGI LG681578828
Dimensions11.39 × 8.11 × 5.30 mm
L/W Ratio1.40
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
11.39 mm8.11 mm4.09 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG681578828
Side View
Table 62.0%Crown 38.9°Girdle: MED-STKPavilion 34°Culet: NoneDepth 65.4%

Caratlytics Score

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

Price History

Last verified: Sep 30
Current: $4,106 USD|Low: $3,046 USD|High: $17,398 USD|Avg: $8,137 USD|+32.5%
Retailer 1
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
With Clarity
October 1, 2026
Retailer 1$4,106 USD
Retailer 3$4,130 USD
Retailer 2$4,405 USD
Retailer 8$5,204 USD
Retailer 20$5,286 USD
Retailer 7$5,666 USD
Retailer 14$5,706 USD
Retailer 15$5,987 USD
Retailer 6$6,523 USD
Retailer 4$6,749 USD
Retailer 16$8,888 USD
Retailer 18$9,221 USD
Retailer 17$9,226 USD
Retailer 13$11,337 USD
Retailer 11$11,620 USD
Retailer 19$11,700 USD
Retailer 9$11,808 USD
Retailer 12$14,422 USD
Retailer 5$15,012 USD
Retailer 10$15,285 USD
With Clarity$16,409 USD

40 data points across 21 retailers

25 retailers$3,667 USD to $16,744 USD

A
Cheapest Retailer
-
$3,667 USD
A
Retailer 2
-
$3,990 USD
View
A
Retailer 3
-
$4,106 USD
View
A
Retailer 4
-
$4,130 USD
View
A
Retailer 5
-
$4,195 USD
View
A
Retailer 6
-
$4,405 USD
View
A
Retailer 7
-
$5,204 USD
View
A
Retailer 8
-
$5,286 USD
HK$41,300 HKD
View
A
Retailer 9
-
$5,315 USD
View
A
Retailer 10
-
$5,666 USD
View
A
Retailer 11
-
$5,719 USD
£4,503 GBP
View
A
Retailer 12
-
$5,987 USD
View
A
Retailer 13
-
$6,523 USD
£5,136 GBP
View
A
Retailer 14
-
$6,749 USD
€6,428 EUR
View
B+
Retailer 15
-
$8,888 USD
ZAR 143,585 ZAR
View
B+
Retailer 16
-
$9,221 USD
£7,261 GBP
View
B+
Retailer 17
-
$9,226 USD
A$14,194 AUD
View
B+
Retailer 18
-
$11,337 USD
View
B+
Retailer 19
-
$11,620 USD
View
B+
Retailer 20
-
$11,700 USD
View
B+
Retailer 21
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$11,808 USD
View
B
Retailer 22
-
$14,422 USD
A$22,187 AUD
View
B
Retailer 23
-
$15,012 USD
View
B
Retailer 24
-
$15,285 USD
SGD 20,656 SGD
View
Most Expensive
B
With Clarity
681578828 · Sep 30
$16,744 USD
View
24 more retailers have this diamond
Prices start from $3,667 USDSave up to $13,077 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.

A
4.09ct Radiant
$3,667 USD