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Marquise|Lab Grown|IGI

1.21ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG754508297

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG754508297

Diamond specifications and retailer prices

From $370 USD
As of November 5, 2026
Save $2,360 USD (86%) vs most expensive(unlock to see where)
31 retailers carry this diamond
Most expensive: $2,730 USD at Do Amore Diamonds · As of November 5, 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 LG754508297 or 754508297. Listed at 31 retailers as of November 5, 2026, with prices from $370 to $2,730, a $2,360 spread on the same certified stone. Do Amore Diamonds lists it at $2,730. 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 angle37.6°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754508297
Dimensions11.53 × 5.32 × 3.38 mm
L/W Ratio2.17
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
11.53 mm5.32 mm1.21 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754508297
Side View
Table 58.0%Crown 37.6°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 63.5%

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 5
Current: $2,730 USD|Low: $370 USD|High: $3,700 USD|Avg: $1,238 USD|-26.2%
Do Amore Diamonds
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November 5, 2026
Retailer 13$370 USD
Retailer 18$417 USD
Retailer 22$431 USD
Retailer 17$497 USD
Retailer 20$500 USD
Retailer 21$563 USD
Retailer 4$595 USD
Retailer 2$613 USD
Retailer 16$728 USD
Retailer 19$746 USD
Retailer 12$780 USD
Retailer 9$946 USD
Retailer 7$958 USD
Retailer 24$1,033 USD
Retailer 3$1,170 USD
Retailer 25$1,351 USD
Retailer 15$1,510 USD
Retailer 8$1,511 USD
Retailer 5$1,530 USD
Retailer 6$1,616 USD
Retailer 11$1,801 USD
Retailer 14$1,801 USD
Retailer 23$1,830 USD
Retailer 10$2,016 USD
Do Amore Diamonds$2,730 USD

32 data points across 25 retailers

31 retailers$370 USD to $2,730 USD

A
Cheapest Retailer
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$370 USD
Final sale: no returns
Retailer 2
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$417 USD
View
Price last confirmed 28 days ago
Retailer 3
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$417 USD
View
Price last confirmed 36 days ago
A
Retailer 4
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$431 USD
View
Retailer 5
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$467 USD
View
Price last confirmed 37 days ago
Retailer 6
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$497 USD
View
Price last confirmed 28 days ago
Retailer 7
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$497 USD
View
Price last confirmed 26 days ago
A
Retailer 8
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$500 USD
View
Retailer 9
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$510 USD
View
Price last confirmed 37 days ago
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Retailer 10
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$563 USD
View
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Retailer 11
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$595 USD
View
A
Retailer 12
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$613 USD
View
B+
Retailer 13
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$728 USD
View
A
Retailer 14
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$746 USD
View
Retailer 15
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$780 USD
View
Price last confirmed 7 days ago
B+
Retailer 16
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$946 USD
View
B+
Retailer 17
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$958 USD
View
B+
Retailer 18
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$1,033 USD
View
B+
Retailer 19
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$1,170 USD
View
B+
Retailer 20
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$1,351 USD
View
Retailer 21
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$1,510 USD
View
Price last confirmed 8 days ago
B+
Retailer 22
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$1,511 USD
View
B+
Retailer 23
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$1,530 USD
View
B+
Retailer 24
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$1,616 USD
View
Retailer 25
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$1,765 USD
View
Price last confirmed 26 days ago
B
Retailer 26
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$1,801 USD
View
B
Retailer 27
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$1,801 USD
View
B
Retailer 28
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$1,830 USD
View
Retailer 29
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$1,833 USD
View
Price last confirmed 36 days ago
B
Retailer 30
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$2,016 USD
View
Most Expensive
B
Do Amore Diamonds
27-82AE7C261 · Nov 5
$2,730 USD
View
30 more retailers have this diamond
Prices start from $370 USDSave up to $2,360 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
$370 USD