Radiant|Lab Grown|IGI

3.78ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG669435062

Certificate IGI LG669435062

Diamond specifications and retailer prices

From $3,531 USD
Save $9,951 USD (74%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $13,482 USD at With Clarity
View at With Clarity

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 LG669435062 or 669435062. Listed at 20 retailers, with prices from $3,531 to $13,482 at With Clarity, a $9,951 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle48.7°
Pavilion angle30°
OriginLab Grown
Grading LabIGI
CertificateIGI LG669435062
Dimensions8.69 × 8.34 × 5.27 mm
L/W Ratio1.04
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.69 mm8.34 mm3.78 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG669435062
Side View
Table 65.0%Crown 48.7°Girdle: STK-THKPavilion 30°Culet: NoneDepth 63.2%

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: Oct 1
Current: $12,128 USD|Low: $2,298 USD|High: $14,443 USD|Avg: $7,896 USD|-11.4%
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
With Clarity
October 1, 2026
Retailer 3$3,531 USD
Retailer 17$3,593 USD
Retailer 14$3,657 USD
Retailer 10$4,615 USD
Retailer 11$4,805 USD
Retailer 6$5,238 USD
Retailer 15$5,700 USD
Retailer 4$6,325 USD
Retailer 9$7,137 USD
Retailer 12$8,336 USD
Retailer 5$9,129 USD
Retailer 13$9,381 USD
Retailer 2$9,904 USD
Retailer 7$10,637 USD
Retailer 1$12,128 USD
Retailer 16$12,307 USD
Retailer 8$12,510 USD
With Clarity$13,212 USD

31 data points across 18 retailers

20 retailers$3,531 USD to $13,482 USD

A
Cheapest Retailer
-
$3,531 USD
A
Retailer 2
-
$3,593 USD
View
A
Retailer 3
-
$3,657 USD
View
A
Retailer 4
-
$4,615 USD
View
A
Retailer 5
-
$4,805 USD
View
B+
Retailer 6
-
$5,238 USD
View
B+
Retailer 7
-
$5,700 USD
€5,429 EUR
View
B+
Retailer 8
-
$6,325 USD
£4,980 GBP
View
B+
Retailer 9
-
$7,103 USD
View
Price last confirmed 72 days ago
B+
Retailer 10
-
$7,137 USD
View
Price last confirmed 58 days ago
B+
Retailer 11
-
$8,336 USD
ZAR 134,661 ZAR
View
B
Retailer 12
-
$9,129 USD
View
B+
Retailer 13
-
$9,381 USD
£7,387 GBP
View
B
Retailer 14
-
$9,445 USD
View
B
Retailer 15
-
$9,904 USD
View
B
Retailer 16
-
$10,637 USD
View
B
Retailer 17
-
$12,128 USD
View
B
Retailer 18
-
$12,307 USD
SGD 16,631 SGD
View
B
Retailer 19
-
$12,510 USD
View
Most Expensive
B
With Clarity
669435062 · Sep 30
$13,482 USD
View
19 more retailers have this diamond
Prices start from $3,531 USDSave up to $9,951 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
$3,531 USD