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Marquise|Lab Grown|IGI

3.18ct D FL Marquise Lab Grown Diamond

ID • D/FL • IGI LG804660100

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG804660100

Diamond specifications and retailer prices

From $3,622 USD
As of October 30, 2026
Save $21,298 USD (85%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $24,920 USD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 3.18ct lab-grown marquise diamond

This 3.18ct lab-grown marquise sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG804660100 or 804660100. Listed at 14 retailers as of October 30, 2026, with prices from $3,622 to $24,920, a $21,298 spread on the same certified stone. Do Amore Diamonds lists it at $24,920. 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

3.18
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.1°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG804660100
Dimensions14.39 × 7.58 × 4.88 mm
L/W Ratio1.90
Girdle conditionFaceted
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
14.39 mm7.58 mm3.18 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG804660100
Side View
Table 61.0%Crown 38.1°Girdle: STK-THKPavilion 40°Culet: NoneDepth 64.4%

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: $24,920 USD|Low: $3,622 USD|High: $28,700 USD|Avg: $8,218 USD|-13.2%
Do Amore Diamonds
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
October 31, 2026
Retailer 9$3,622 USD
Retailer 10$3,801 USD
Retailer 7$3,958 USD
Retailer 4$3,978 USD
Retailer 12$4,355 USD
Retailer 5$4,902 USD
Retailer 2$5,682 USD
Retailer 14$5,796 USD
Retailer 3$6,575 USD
Retailer 6$7,570 USD
Retailer 11$7,955 USD
Retailer 8$9,440 USD
Retailer 13$9,987 USD
Do Amore Diamonds$24,920 USD

33 data points across 14 retailers

14 retailers$3,622 USD to $24,920 USD

A
Cheapest Retailer
-
$3,622 USD
A
Retailer 2
-
$3,801 USD
View
A
Retailer 3
-
$3,958 USD
View
A
Retailer 4
-
$3,978 USD
View
A
Retailer 5
-
$4,355 USD
View
A
Retailer 6
-
$4,902 USD
View
Final sale: no returns
A
Retailer 7
-
$5,682 USD
View
A
Retailer 8
-
$5,796 USD
View
B+
Retailer 9
-
$6,575 USD
View
Retailer 10
-
$7,570 USD
View
Price last confirmed 49 days ago
B+
Retailer 11
-
$7,955 USD
€7,576 EUR
View
B+
Retailer 12
-
$9,440 USD
View
B+
Retailer 13
-
$9,987 USD
£7,864 GBP
View
Most Expensive
B
Do Amore Diamonds
27-F1234B2E2 · Oct 31
$24,920 USD
View
13 more retailers have this diamond
Prices start from $3,622 USDSave up to $21,298 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
3.18ct Marquise
$3,622 USD