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Marquise|Lab Grown|IGI

1.78ct F VS1 Marquise Lab Grown Diamond

ID • F/VS1 • IGI LG803611087

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG803611087

Diamond specifications and retailer prices

From $317 USD
As of November 2, 2026
Save $2,503 USD (89%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $2,820 USD at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

About this 1.78ct lab-grown marquise diamond

This 1.78ct lab-grown marquise sits in the one-and-a-half to two carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG803611087 or 803611087. Listed at 21 retailers as of November 2, 2026, with prices from $317 to $2,820, a $2,503 spread on the same certified stone. Do Amore Diamonds lists it at $2,820. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.78
Carat
F
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG803611087
Dimensions12.20 × 6.36 × 3.98 mm
L/W Ratio1.92
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.20 mm6.36 mm1.78 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG803611087
Side View
Table 61.0%Crown 35.9°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 62.6%

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: Nov 2
Current: $2,820 USD|Low: $317 USD|High: $2,820 USD|Avg: $1,008 USD
Do Amore Diamonds
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November 2, 2026
Retailer 24$317 USD
Retailer 6$368 USD
Retailer 9$491 USD
Retailer 2$508 USD
Retailer 16$511 USD
Retailer 7$522 USD
Retailer 10$526 USD
Retailer 3$550 USD
Retailer 8$559 USD
Retailer 15$608 USD
Retailer 5$672 USD
Retailer 14$940 USD
Retailer 22$1,009 USD
Retailer 18$1,046 USD
Retailer 21$1,130 USD
Retailer 25$1,155 USD
Retailer 23$1,225 USD
Retailer 11$1,292 USD
Retailer 17$1,329 USD
Retailer 4$1,397 USD
Retailer 13$1,588 USD
Retailer 19$1,698 USD
Retailer 12$1,709 USD
Retailer 20$2,370 USD
Do Amore Diamonds$2,820 USD

17 data points across 25 retailers

21 retailers$317 USD to $2,820 USD

A
Cheapest Retailer
-
$317 USD
A
Retailer 2
-
$368 USD
View
A
Retailer 3
-
$491 USD
View
A
Retailer 4
-
$508 USD
£400 GBP
View
A
Retailer 5
-
$522 USD
View
B+
Retailer 6
-
$526 USD
View
A
Retailer 7
-
$550 USD
View
A
Retailer 8
-
$559 USD
View
A
Retailer 9
-
$672 USD
€640 EUR
View
Retailer 10
-
$940 USD
View
Price last confirmed 9 days ago
B+
Retailer 11
-
$1,009 USD
A$1,552 AUD
View
B+
Retailer 12
-
$1,130 USD
A$1,738 AUD
View
B+
Retailer 13
-
$1,155 USD
View
B+
Retailer 14
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$1,225 USD
View
B+
Retailer 15
-
$1,292 USD
CA$1,795 CAD
View
B
Retailer 16
-
$1,397 USD
View
B
Retailer 17
-
$1,588 USD
View
B
Retailer 18
-
$1,698 USD
£1,337 GBP
View
B
Retailer 19
-
$1,709 USD
View
B
Retailer 20
-
$2,370 USD
View
Most Expensive
B
Do Amore Diamonds
27-B1329BF40 · Nov 2
$2,820 USD
View
20 more retailers have this diamond
Prices start from $317 USDSave up to $2,503 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
1.78ct Marquise
$317 USD