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Marquise|Lab Grown|IGI

3.42ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG706508352

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG706508352

Diamond specifications and retailer prices

From $3,643 USD
As of October 30, 2026
Save $21,427 USD (85%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $25,070 USD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 3.42ct lab-grown marquise diamond

This 3.42ct lab-grown marquise 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 LG706508352 or 706508352. Listed at 18 retailers as of October 30, 2026, with prices from $3,643 to $25,070, a $21,427 spread on the same certified stone. Do Amore Diamonds lists it at $25,070. 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 angle37.3°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG706508352
Dimensions15.12 × 7.78 × 5.06 mm
L/W Ratio1.94
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
15.12 mm7.78 mm3.42 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG706508352
Side View
Table 61.0%Crown 37.3°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 65.0%

Caratlytics Score

How it works →
A
Excellent
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 30
Current: $25,070 USD|Low: $3,643 USD|High: $26,450 USD|Avg: $8,462 USD|-5.2%
Do Amore Diamonds
Retailer 2
Retailer 3
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Retailer 7
Retailer 8
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Retailer 11
Retailer 12
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Retailer 18
Retailer 19
November 1, 2026
Retailer 18$3,643 USD
Retailer 19$3,707 USD
Retailer 8$3,951 USD
Retailer 16$3,989 USD
Retailer 11$4,313 USD
Retailer 3$4,380 USD
Retailer 10$4,514 USD
Retailer 13$5,551 USD
Retailer 15$5,715 USD
Retailer 5$5,829 USD
Retailer 12$6,553 USD
Retailer 6$7,455 USD
Retailer 7$8,001 USD
Retailer 17$9,230 USD
Retailer 2$9,992 USD
Retailer 9$11,302 USD
Retailer 4$11,603 USD
Retailer 14$17,918 USD
Do Amore Diamonds$25,070 USD

36 data points across 19 retailers

18 retailers$3,643 USD to $25,070 USD

A
Cheapest Retailer
-
$3,643 USD
A
Retailer 2
-
$3,707 USD
View
A
Retailer 3
-
$3,951 USD
View
A
Retailer 4
-
$3,989 USD
View
A
Retailer 5
-
$4,313 USD
View
Final sale: no returns
A
Retailer 6
-
$4,380 USD
View
Retailer 7
-
$4,514 USD
View
Price last confirmed 9 days ago
A
Retailer 8
-
$5,551 USD
£4,371 GBP
View
A
Retailer 9
-
$5,715 USD
View
A
Retailer 10
-
$5,829 USD
View
A
Retailer 11
-
$6,553 USD
View
B+
Retailer 12
-
$7,455 USD
View
B+
Retailer 13
-
$8,001 USD
€7,620 EUR
View
B+
Retailer 14
-
$9,230 USD
View
B+
Retailer 15
-
$9,992 USD
£7,868 GBP
View
B+
Retailer 16
-
$11,603 USD
View
B
Retailer 17
-
$17,918 USD
A$27,566 AUD
View
Most Expensive
B
Do Amore Diamonds
27-D6CEF2128 · Oct 31
$25,070 USD
View
17 more retailers have this diamond
Prices start from $3,643 USDSave up to $21,427 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
3.42ct Marquise
$3,643 USD