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Round|Lab Grown|IGI

4.12ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG618434112

Shape and cutting style on the report: Round brilliant

Certificate IGI LG618434112

Diamond specifications and retailer prices

From $1,649 USD
As of October 29, 2026
Save $9,701 USD (85%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $11,350 USD at Do Amore Diamonds · As of November 1, 2026
View at Do Amore Diamonds

About this 4.12ct lab-grown round diamond

This 4.12ct lab-grown round sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG618434112 or 618434112. Listed at 18 retailers as of October 29, 2026, with prices from $1,649 to $11,350, a $9,701 spread on the same certified stone. Do Amore Diamonds lists it at $11,350. 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

4.12
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG618434112
Dimensions10.24 × 10.29 × 6.35 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS 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
10.24 mm10.29 mm4.12 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG618434112
Side View
Table 57.0%Crown 35.4°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.9%

Caratlytics Score

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

Price History

Last verified: Oct 29
Current: $11,350 USD|Low: $1,617 USD|High: $12,530 USD|Avg: $4,566 USD|-9.4%
Do Amore Diamonds
Retailer 2
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Retailer 19
November 1, 2026
Retailer 19$1,649 USD
Retailer 6$1,795 USD
Retailer 10$2,040 USD
Retailer 3$2,064 USD
Retailer 8$2,565 USD
Retailer 18$3,008 USD
Retailer 9$3,180 USD
Retailer 4$3,299 USD
Retailer 16$3,311 USD
Retailer 13$3,418 USD
Retailer 5$3,959 USD
Retailer 11$4,081 USD
Retailer 7$4,472 USD
Retailer 2$4,525 USD
Retailer 15$6,064 USD
Retailer 17$6,445 USD
Retailer 12$9,238 USD
Retailer 14$9,330 USD
Do Amore Diamonds$11,350 USD

35 data points across 19 retailers

18 retailers$1,649 USD to $11,350 USD

A+
Cheapest Retailer
-
$1,649 USD
A
Retailer 2
-
$1,795 USD
View
A
Retailer 3
-
$2,040 USD
View
Final sale: no returns
A
Retailer 4
-
$2,064 USD
View
A
Retailer 5
-
$2,565 USD
View
A
Retailer 6
-
$2,980 USD
View
A
Retailer 7
-
$3,008 USD
View
A
Retailer 8
-
$3,180 USD
View
A
Retailer 9
-
$3,299 USD
View
A
Retailer 10
-
$3,418 USD
€3,255 EUR
View
A
Retailer 11
-
$3,959 USD
View
A
Retailer 12
-
$4,472 USD
View
A
Retailer 13
-
$4,525 USD
A$6,961 AUD
View
A
Retailer 14
-
$6,064 USD
£4,775 GBP
View
B+
Retailer 15
-
$6,445 USD
View
B+
Retailer 16
-
$9,238 USD
A$14,212 AUD
View
B+
Retailer 17
-
$9,330 USD
View
Most Expensive
B
Do Amore Diamonds
27-964C8B839 · Nov 1
$11,350 USD
View
17 more retailers have this diamond
Prices start from $1,649 USDSave up to $9,701 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+
4.12ct Round
$1,649 USD