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Radiant|Lab Grown|IGI

3.78ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG754593621

Certificate IGI LG754593621

Diamond specifications and retailer prices

From $2,907 USD
Save $14,493 USD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $17,400 USD at Do Amore Diamonds
View at Do Amore Diamonds

About this 3.78ct lab-grown radiant diamond

This 3.78ct 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 LG754593621 or 754593621. Listed at 14 retailers, with prices from $2,907 to $17,400 at Do Amore Diamonds, a $14,493 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

3.78
Carat
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42°
Pavilion angle34°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754593621
Dimensions10.96 × 10.96 × 7.81 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
10.96 mm10.96 mm3.78 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754593621
Side View
Table 64.0%Crown 42°Girdle: ThickPavilion 34°Culet: NoneDepth 64.3%

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: Sep 30
Current: $17,400 USD|Low: $2,274 USD|High: $19,550 USD|Avg: $7,716 USD|-11.0%
Do Amore Diamonds
Retailer 2
Retailer 3
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Retailer 5
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Retailer 7
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Retailer 11
Retailer 12
Retailer 13
Retailer 14
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Retailer 17
October 1, 2026
Retailer 17$2,907 USD
Retailer 15$3,095 USD
Retailer 5$3,184 USD
Retailer 4$3,590 USD
Retailer 3$3,906 USD
Retailer 11$4,497 USD
Retailer 16$5,051 USD
Retailer 13$6,135 USD
Retailer 9$6,468 USD
Retailer 12$7,322 USD
Retailer 14$8,007 USD
Retailer 2$8,308 USD
Retailer 10$9,302 USD
Retailer 8$11,695 USD
Retailer 6$12,080 USD
Retailer 7$12,728 USD
Do Amore Diamonds$17,400 USD

17 data points across 17 retailers

14 retailers$2,907 USD to $17,400 USD

A
Cheapest Retailer
-
$2,907 USD
A
Retailer 2
-
$3,095 USD
View
A
Retailer 3
-
$3,184 USD
View
A
Retailer 4
-
$3,590 USD
View
A
Retailer 5
-
$3,906 USD
View
A
Retailer 6
-
$4,497 USD
View
A
Retailer 7
-
$5,051 USD
€4,810 EUR
View
B+
Retailer 8
-
$6,135 USD
View
B+
Retailer 9
-
$7,322 USD
A$11,264 AUD
View
B+
Retailer 10
-
$8,007 USD
View
B+
Retailer 11
-
$8,308 USD
£6,542 GBP
View
B
Retailer 12
-
$9,302 USD
A$14,311 AUD
View
B
Retailer 13
-
$12,080 USD
View
Most Expensive
B
Do Amore Diamonds
27-47B2B5045 · Sep 30
$17,400 USD
View
13 more retailers have this diamond
Prices start from $2,907 USDSave up to $14,493 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
3.78ct Radiant
$2,907 USD