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Marquise|Lab Grown|IGI

1.21ct F IF Marquise Lab Grown Diamond

ID • F/IF • IGI LG786675964

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG786675964

Diamond specifications and retailer prices

From $274 USD
As of November 6, 2026
Save $1,496 USD (85%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,770 USD at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 1.21ct lab-grown marquise diamond

This 1.21ct lab-grown marquise sits in the classic one-carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG786675964 or 786675964. Listed at 17 retailers as of November 6, 2026, with prices from $274 to $1,770, a $1,496 spread on the same certified stone. Brilliant Earth lists it at $1,770. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
F
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786675964
Dimensions11.19 × 5.56 × 3.40 mm
L/W Ratio2.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.19 mm5.56 mm1.21 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG786675964
Side View
Table 59.0%Crown 35.1°Girdle: MED-STKPavilion 39.3°Culet: NoneDepth 61.2%

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 6
Current: $572 USD|Low: $274 USD|High: $1,273 USD|Avg: $733 USD|-2.1%
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
November 7, 2026
Retailer 14$274 USD
Retailer 11$285 USD
Retailer 12$410 USD
Retailer 7$470 USD
Retailer 8$515 USD
Retailer 9$550 USD
Retailer 1$572 USD
Retailer 5$619 USD
Retailer 4$748 USD
Retailer 6$807 USD
Retailer 15$982 USD
Retailer 3$985 USD
Retailer 10$1,029 USD
Retailer 13$1,063 USD
Retailer 2$1,220 USD

25 data points across 15 retailers

17 retailers$274 USD to $1,770 USD

A
Cheapest Retailer
-
$274 USD
Final sale: no returns
A
Retailer 2
-
$285 USD
View
A
Retailer 3
-
$410 USD
View
Retailer 4
-
$470 USD
View
Price last confirmed 14 days ago
A
Retailer 5
-
$515 USD
View
A
Retailer 6
-
$550 USD
View
A
Retailer 7
-
$572 USD
View
A
Retailer 8
-
$619 USD
View
B+
Retailer 9
-
$748 USD
View
B+
Retailer 10
-
$807 USD
View
B+
Retailer 11
-
$982 USD
View
B+
Retailer 12
-
$985 USD
View
B+
Retailer 13
-
$1,029 USD
View
B+
Retailer 14
-
$1,063 USD
View
Retailer 15
-
$1,115 USD
View
Price last confirmed 33 days ago
B+
Retailer 16
-
$1,220 USD
View
Most Expensive
B
Brilliant Earth
18735861A · Nov 6
$1,770 USD
View
16 more retailers have this diamond
Prices start from $274 USDSave up to $1,496 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
1.21ct Marquise
$274 USD