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Marquise|Lab Grown|IGI

1.21ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG739586856

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG739586856

Diamond specifications and retailer prices

From €393 EUR
$441 USD
As of November 2, 2026
Save €1,863 EUR (83%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: €2,256 EUR at Brilliant Earth · As of October 31, 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 D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG739586856 or 739586856. Listed at 23 retailers as of October 31, 2026, with prices from €393 to €2,256, a €1,863 spread on the same certified stone. Brilliant Earth lists it at €2,256. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG739586856
Dimensions10.79 × 5.59 × 3.49 mm
L/W Ratio1.93
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
10.79 mm5.59 mm1.21 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG739586856
Side View
Table 59.0%Crown 33.3°Girdle: MediumPavilion 40°Culet: NoneDepth 62.4%

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: €2,256 EUR|Low: €393 EUR|High: €2,639 EUR|Avg: €1,060 EUR|-14.5%
Brilliant Earth
Retailer 2
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Retailer 23
November 2, 2026
Retailer 16€393 EUR
Retailer 11€440 EUR
Retailer 7€440 EUR
Retailer 5€488 EUR
Retailer 23€488 EUR
Retailer 6€536 EUR
Retailer 18€615 EUR
Retailer 10€689 EUR
Retailer 4€744 EUR
Retailer 12€766 EUR
Retailer 20€773 EUR
Retailer 13€799 EUR
Retailer 2€840 EUR
Retailer 17€1,187 EUR
Retailer 3€1,310 EUR
Retailer 21€1,369 EUR
Retailer 9€1,427 EUR
Retailer 15€1,545 EUR
Retailer 22€1,567 EUR
Retailer 8€1,596 EUR
Retailer 14€1,749 EUR
Retailer 19€1,792 EUR
Brilliant Earth€2,256 EUR

39 data points across 23 retailers

23 retailers€393 EUR to €2,256 EUR

A
Cheapest Retailer
-
€393 EUR
$441 USD
A
Retailer 2
-
€440 EUR
$493 USD
View
Final sale: no returns
A
Retailer 3
-
€440 EUR
$494 USD
View
Retailer 4
-
€488 EUR
$547 USD
View
Price last confirmed 8 days ago
A
Retailer 5
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€488 EUR
$547 USD
View
A
Retailer 6
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€536 EUR
HK$4,700 HKD
View
A
Retailer 7
-
€615 EUR
$690 USD
View
B+
Retailer 8
-
€689 EUR
$773 USD
View
B+
Retailer 9
-
€744 EUR
$835 USD
View
B+
Retailer 10
-
€766 EUR
$859 USD
View
B+
Retailer 11
-
€773 EUR
View
B+
Retailer 12
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€799 EUR
£705 GBP
View
B+
Retailer 13
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€840 EUR
ZAR 15,228 ZAR
View
B+
Retailer 14
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€1,187 EUR
A$2,049 AUD
View
B
Retailer 15
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€1,310 EUR
$1,469 USD
View
B+
Retailer 16
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€1,369 EUR
$1,535 USD
View
B
Retailer 17
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€1,427 EUR
£1,260 GBP
View
B
Retailer 18
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€1,545 EUR
SGD 2,342 SGD
View
B
Retailer 19
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€1,567 EUR
$1,757 USD
View
B
Retailer 20
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€1,596 EUR
$1,790 USD
View
B
Retailer 21
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€1,749 EUR
$1,962 USD
View
B
Retailer 22
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€1,792 EUR
£1,583 GBP
View
Most Expensive
B
Brilliant Earth
19056215A · Oct 31
€2,256 EUR
$2,530 USD
View
22 more retailers have this diamond
Prices start from €393 EURSave up to €1,863 EUR

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
€393 EUR