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Marquise|Lab Grown|IGI

1.21ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG754508674

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG754508674

Diamond specifications and retailer prices

From $431 USD
As of November 4, 2026
Save $3,129 USD (88%) vs most expensive(unlock to see where)
30 retailers carry this diamond
Most expensive: $3,560 USD at Do Amore Diamonds · As of November 4, 2026
View at Do Amore Diamonds

About this 1.21ct lab-grown marquise diamond

This 1.21ct lab-grown marquise sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG754508674 or 754508674. Listed at 30 retailers as of November 4, 2026, with prices from $431 to $3,560, a $3,129 spread on the same certified stone. Do Amore Diamonds lists it at $3,560. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754508674
Dimensions10.82 × 5.55 × 3.51 mm
L/W Ratio1.95
Girdle conditionFaceted
Culet sizePointed
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
10.82 mm5.55 mm1.21 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754508674
Side View
Table 58.0%Crown 33.9°Girdle: Slightly ThickPavilion 40.1°Culet: NoneDepth 63.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: $3,560 USD|Low: $417 USD|High: $3,700 USD|Avg: $1,238 USD|-3.8%
Do Amore Diamonds
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November 5, 2026
Retailer 17$417 USD
Retailer 20$431 USD
Retailer 12$494 USD
Retailer 16$497 USD
Retailer 18$500 USD
Retailer 19$563 USD
Retailer 3$595 USD
Retailer 15$634 USD
Retailer 14$728 USD
Retailer 2$746 USD
Retailer 9$780 USD
Retailer 7$946 USD
Retailer 5$958 USD
Retailer 22$1,033 USD
Retailer 24$1,170 USD
Retailer 23$1,351 USD
Retailer 11$1,510 USD
Retailer 6$1,511 USD
Retailer 4$1,530 USD
Retailer 13$1,680 USD
Retailer 8$1,801 USD
Retailer 10$1,801 USD
Retailer 21$1,830 USD
Do Amore Diamonds$3,560 USD

33 data points across 24 retailers

30 retailers$431 USD to $3,560 USD

Retailer 1
-
$417 USD
Price last confirmed 28 days ago
Retailer 2
-
$417 USD
View
Price last confirmed 36 days ago
A
Retailer 3
-
$431 USD
View
Retailer 4
-
$467 USD
View
Price last confirmed 37 days ago
A
Retailer 5
-
$494 USD
View
Final sale: no returns
Retailer 6
-
$497 USD
View
Price last confirmed 28 days ago
Retailer 7
-
$497 USD
View
Price last confirmed 26 days ago
A
Retailer 8
-
$500 USD
View
Retailer 9
-
$510 USD
View
Price last confirmed 37 days ago
A
Retailer 10
-
$563 USD
View
A
Retailer 11
-
$595 USD
View
A
Retailer 12
-
$634 USD
View
B+
Retailer 13
-
$728 USD
View
A
Retailer 14
-
$746 USD
View
A
Retailer 15
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$780 USD
View
B+
Retailer 16
-
$946 USD
View
B+
Retailer 17
-
$958 USD
View
B+
Retailer 18
-
$1,033 USD
View
B+
Retailer 19
-
$1,170 USD
View
B+
Retailer 20
-
$1,351 USD
View
Retailer 21
-
$1,510 USD
View
Price last confirmed 8 days ago
B+
Retailer 22
-
$1,511 USD
View
B+
Retailer 23
-
$1,530 USD
View
B+
Retailer 24
-
$1,680 USD
View
Retailer 25
-
$1,765 USD
View
Price last confirmed 26 days ago
B
Retailer 26
-
$1,801 USD
View
B+
Retailer 27
-
$1,801 USD
View
B
Retailer 28
-
$1,830 USD
View
Retailer 29
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$1,833 USD
View
Price last confirmed 36 days ago
Most Expensive
B
Do Amore Diamonds
27-B4A31C9AE · Nov 4
$3,560 USD
View
29 more retailers have this diamond
Prices start from $431 USDSave up to $3,129 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
$431 USD