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Marquise|Lab Grown|IGI

3.51ct G VS1 Marquise Lab Grown Diamond

EX • G/VS1 • IGI LG747588136

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG747588136

Diamond specifications and retailer prices

From $687 USD
As of October 30, 2026
Save $6,313 USD (90%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $7,000 USD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 3.51ct lab-grown marquise diamond

This 3.51ct lab-grown marquise sits in the three to five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG747588136 or 747588136. Listed at 25 retailers as of October 30, 2026, with prices from $687 to $7,000, a $6,313 spread on the same certified stone. Do Amore Diamonds lists it at $7,000. 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

3.51
Carat
G
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.1°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG747588136
Dimensions14.76 × 7.80 × 4.99 mm
L/W Ratio1.89
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.76 mm7.80 mm3.51 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG747588136
Side View
Table 59.0%Crown 37.1°Girdle: STK-THKPavilion 38.7°Culet: NoneDepth 64.0%

Caratlytics Score

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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: $6,100 USD|Low: $660 USD|High: $6,100 USD|Avg: $2,136 USD
Do Amore Diamonds
Retailer 2
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Retailer 11
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Retailer 19
November 1, 2026
Retailer 4$660 USD
Retailer 6$769 USD
Retailer 3$797 USD
Retailer 19$797 USD
Retailer 18$925 USD
Retailer 8$986 USD
Retailer 7$1,126 USD
Retailer 5$1,194 USD
Retailer 12$1,348 USD
Retailer 17$1,964 USD
Retailer 14$1,988 USD
Retailer 15$2,044 USD
Retailer 16$2,650 USD
Retailer 9$2,727 USD
Retailer 10$2,728 USD
Retailer 11$3,148 USD
Retailer 2$3,299 USD
Retailer 13$5,520 USD
Do Amore Diamonds$6,100 USD

42 data points across 19 retailers

25 retailers$687 USD to $7,000 USD

Retailer 1
-
$660 USD
Price last confirmed 30 days ago
A
Retailer 2
-
$687 USD
View
Retailer 3
-
$748 USD
View
Price last confirmed 34 days ago
A
Retailer 4
-
$769 USD
View
Final sale: no returns
Retailer 5
-
$797 USD
View
Price last confirmed 16 days ago
Retailer 6
-
$797 USD
View
Price last confirmed 29 days ago
A
Retailer 7
-
$797 USD
View
A
Retailer 8
-
$925 USD
View
A
Retailer 9
-
$986 USD
View
A
Retailer 10
-
$1,126 USD
View
A
Retailer 11
-
$1,194 USD
View
A
Retailer 12
-
$1,348 USD
£1,062 GBP
View
B+
Retailer 13
-
$1,964 USD
View
B+
Retailer 14
-
$1,988 USD
A$3,058 AUD
View
B+
Retailer 15
-
$2,044 USD
ZAR 33,014 ZAR
View
Retailer 16
-
$2,475 USD
View
Price last confirmed 32 days ago
B+
Retailer 17
-
$2,475 USD
View
B+
Retailer 18
-
$2,650 USD
View
B
Retailer 19
-
$2,727 USD
View
B
Retailer 20
-
$2,728 USD
£2,148 GBP
View
B
Retailer 21
-
$3,148 USD
View
B
Retailer 22
-
$3,299 USD
£2,598 GBP
View
B
Retailer 23
-
$5,520 USD
View
B
Retailer 24
-
$6,100 USD
View
Most Expensive
B
Do Amore Diamonds
23-747588136 · Oct 31
$7,000 USD
View
24 more retailers have this diamond
Prices start from $687 USDSave up to $6,313 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
3.51ct Marquise
$687 USD