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Radiant|Lab Grown|IGI

3.42ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG685525738

Certificate IGI LG685525738

Diamond specifications and retailer prices

From $1,557 USD
Save $9,733 USD (86%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $11,290 USD at Brilliant Earth
View at Brilliant Earth

About this 3.42ct lab-grown radiant diamond

This 3.42ct 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 LG685525738 or 685525738. Listed at 20 retailers, with prices from $1,557 to $11,290 at Brilliant Earth, a $9,733 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

3.42
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46°
Pavilion angle33.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG685525738
Dimensions11.45 × 7.27 × 4.75 mm
L/W Ratio1.57
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
11.45 mm7.27 mm3.42 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG685525738
Side View
Table 67.0%Crown 46°Girdle: Slightly ThickPavilion 33.8°Culet: NoneDepth 65.3%

Caratlytics Score

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

Price History

Last verified: Oct 1
Current: $11,290 USD|Low: $1,159 USD|High: $13,580 USD|Avg: $4,149 USD|-16.9%
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
Retailer 17
October 1, 2026
Retailer 13$1,557 USD
Retailer 12$1,785 USD
Retailer 10$1,849 USD
Retailer 14$2,331 USD
Retailer 2$2,548 USD
Retailer 8$2,576 USD
Retailer 15$2,928 USD
Retailer 9$3,674 USD
Retailer 3$3,678 USD
Retailer 5$3,816 USD
Retailer 16$3,901 USD
Retailer 4$4,698 USD
Retailer 17$4,878 USD
Retailer 11$4,993 USD
Retailer 7$5,665 USD
Retailer 6$5,673 USD
Brilliant Earth$11,290 USD

37 data points across 17 retailers

20 retailers$1,557 USD to $11,290 USD

A
Cheapest Retailer
-
$1,557 USD
A
Retailer 2
-
$1,785 USD
View
A
Retailer 3
-
$1,849 USD
View
A
Retailer 4
-
$2,336 USD
£1,839 GBP
View
A
Retailer 5
-
$2,548 USD
View
A
Retailer 6
-
$2,576 USD
€2,453 EUR
View
A
Retailer 7
-
$2,928 USD
View
A
Retailer 8
-
$3,015 USD
View
Price last confirmed 45 days ago
A
Retailer 9
-
$3,674 USD
View
A
Retailer 10
-
$3,678 USD
ZAR 59,419 ZAR
View
A
Retailer 11
-
$3,816 USD
A$5,870 AUD
View
A
Retailer 12
-
$3,901 USD
£3,072 GBP
View
A
Retailer 13
-
$4,611 USD
View
A
Retailer 14
-
$4,698 USD
View
B+
Retailer 15
-
$4,878 USD
£3,841 GBP
View
B+
Retailer 16
-
$4,993 USD
View
B+
Retailer 17
-
$5,665 USD
View
B+
Retailer 18
-
$5,673 USD
View
B
Retailer 19
-
$9,810 USD
A$15,092 AUD
View
Price last confirmed 89 days ago
Most Expensive
B
Brilliant Earth
13304119A · Sep 29
$11,290 USD
View
19 more retailers have this diamond
Prices start from $1,557 USDSave up to $9,733 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
3.42ct Radiant
$1,557 USD