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Marquise|Lab Grown|IGI

3.74ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG818696569

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818696569

Diamond specifications and retailer prices

From $4,188 USD
As of November 2, 2026
Save $13,095 USD (76%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $17,283 USD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 3.74ct lab-grown marquise diamond

This 3.74ct 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 LG818696569 or 818696569. Listed at 21 retailers as of October 31, 2026, with prices from $4,188 to $17,283, a $13,095 spread on the same certified stone. Taylor and Hart lists it at $17,283. 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

3.74
Carat
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818696569
Dimensions16.77 × 8.08 × 4.81 mm
L/W Ratio2.08
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.77 mm8.08 mm3.74 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818696569
Side View
Table 60.0%Crown 35.8°Girdle: MED-STKPavilion 39.7°Culet: NoneDepth 59.5%

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: Nov 2
Current: $6,285 USD|Low: $4,020 USD|High: $14,154 USD|Avg: $7,103 USD|-1.4%
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
Retailer 18
November 2, 2026
Retailer 4$4,188 USD
Retailer 9$4,389 USD
Retailer 5$4,690 USD
Retailer 6$4,858 USD
Retailer 2$4,905 USD
Retailer 8$5,107 USD
Retailer 13$5,780 USD
Retailer 7$6,071 USD
Retailer 1$6,285 USD
Retailer 17$6,321 USD
Retailer 10$6,828 USD
Retailer 15$7,062 USD
Retailer 16$8,708 USD
Retailer 3$9,070 USD
Retailer 11$10,058 USD
Retailer 12$11,162 USD
Retailer 14$11,279 USD
Retailer 18$14,154 USD

37 data points across 18 retailers

21 retailers$4,188 USD to $17,283 USD

A
Cheapest Retailer
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$4,188 USD
A
Retailer 2
-
$4,389 USD
View
A
Retailer 3
-
$4,690 USD
View
Final sale: no returns
Retailer 4
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$4,858 USD
View
Price last confirmed 16 days ago
A
Retailer 5
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$4,858 USD
View
A
Retailer 6
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$4,905 USD
View
A
Retailer 7
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$5,107 USD
View
A
Retailer 8
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$5,780 USD
£4,552 GBP
View
A
Retailer 9
-
$6,071 USD
View
A
Retailer 10
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$6,285 USD
£4,949 GBP
View
A
Retailer 11
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$6,321 USD
View
A
Retailer 12
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$6,828 USD
£5,376 GBP
View
A
Retailer 13
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$7,062 USD
View
Retailer 14
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$8,708 USD
€8,293 EUR
View
Price last confirmed 7 days ago
B+
Retailer 15
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$9,070 USD
View
B+
Retailer 16
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$10,058 USD
£7,920 GBP
View
B+
Retailer 17
-
$11,162 USD
A$17,172 AUD
View
B+
Retailer 18
-
$11,279 USD
ZAR 182,211 ZAR
View
B
Retailer 19
-
$14,154 USD
View
B
Retailer 20
-
$16,640 USD
SGD 22,487 SGD
View
Most Expensive
B
Taylor and Hart
8QMHVDB · Oct 31
$17,283 USD
View
20 more retailers have this diamond
Prices start from $4,188 USDSave up to $13,095 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
3.74ct Marquise
$4,188 USD