CaratHunter
Plans
Round|Lab Grown|IGI

4.06ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG780668578

Shape and cutting style on the report: Round brilliant

Certificate IGI LG780668578

Diamond specifications and retailer prices

From $2,127 USD
As of November 3, 2026
Save $10,713 USD (83%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $12,840 USD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 4.06ct lab-grown round diamond

This 4.06ct lab-grown round 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 LG780668578 or 780668578. Listed at 25 retailers as of November 3, 2026, with prices from $2,127 to $12,840, a $10,713 spread on the same certified stone. Brilliant Earth lists it at $12,840. 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

4.06
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780668578
Dimensions10.23 × 10.29 × 6.34 mm
L/W Ratio1.01
Girdle conditionFaceted
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
10.23 mm10.29 mm4.06 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780668578
Side View
Table 55.0%Crown 34.3°Girdle: MediumPavilion 40.9°Culet: NoneDepth 61.8%

Caratlytics Score

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

Price History

Last verified: Nov 3
Current: $12,840 USD|Low: $2,127 USD|High: $12,840 USD|Avg: $4,915 USD
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
November 5, 2026
Retailer 11$2,127 USD
Retailer 15$2,370 USD
Retailer 8$2,462 USD
Retailer 2$2,916 USD
Retailer 16$3,264 USD
Retailer 7$3,312 USD
Retailer 3$3,490 USD
Retailer 5$4,413 USD
Retailer 12$4,705 USD
Retailer 14$4,720 USD
Retailer 6$5,743 USD
Retailer 9$5,795 USD
Retailer 13$6,294 USD
Retailer 4$6,309 USD
Retailer 10$7,535 USD
Brilliant Earth$12,840 USD

32 data points across 16 retailers

25 retailers$2,127 USD to $12,840 USD

Retailer 1
-
$1,991 USD
Price last confirmed 43 days ago
Retailer 2
-
$1,991 USD
View
Price last confirmed 26 days ago
A
Retailer 3
-
$2,127 USD
View
Final sale: no returns
Retailer 4
-
$2,166 USD
View
Price last confirmed 43 days ago
Retailer 5
-
$2,278 USD
View
Price last confirmed 41 days ago
Retailer 6
-
$2,310 USD
View
Price last confirmed 34 days ago
Retailer 7
-
$2,310 USD
View
Price last confirmed 25 days ago
A
Retailer 8
-
$2,370 USD
View
A
Retailer 9
-
$2,462 USD
View
A
Retailer 10
-
$2,916 USD
View
Retailer 11
-
$3,175 USD
View
Price last confirmed 45 days ago
Retailer 12
-
$3,175 USD
View
Price last confirmed 29 days ago
A
Retailer 13
-
$3,264 USD
View
A
Retailer 14
-
$3,312 USD
View
A
Retailer 15
-
$3,490 USD
View
A
Retailer 16
-
$4,413 USD
View
A
Retailer 17
-
$4,705 USD
View
A
Retailer 18
-
$4,720 USD
View
A
Retailer 19
-
$5,543 USD
View
B+
Retailer 20
-
$5,743 USD
View
A
Retailer 21
-
$5,795 USD
View
B+
Retailer 22
-
$6,294 USD
View
B+
Retailer 23
-
$6,309 USD
View
B+
Retailer 24
-
$7,535 USD
View
Most Expensive
B
Brilliant Earth
18156377A · Nov 4
$12,840 USD
View
24 more retailers have this diamond
Prices start from $2,127 USDSave up to $10,713 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. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
4.06ct Round
$2,127 USD