Marquise|Lab Grown|IGI

1.55ct D IF Marquise Lab Grown Diamond

VG • D/IF • IGI LG812621500

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG812621500

Diamond specifications and retailer prices

From $710 USD
As of November 6, 2026
Save $2,385 USD (77%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $3,095 USD at MOH London · As of November 5, 2026
View at MOH London

About this 1.55ct lab-grown marquise diamond

This 1.55ct lab-grown marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG812621500 or 812621500. Listed at 23 retailers as of November 5, 2026, with prices from $710 to $3,095, a $2,385 spread on the same certified stone. MOH London lists it at $3,095. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.55
Carat
D
Color
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG812621500
Dimensions11.76 × 5.99 × 3.72 mm
L/W Ratio1.96
Girdle conditionFaceted
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
11.76 mm5.99 mm1.55 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG812621500
Side View
Table 61.0%Crown 36.1°Girdle: MED-STKPavilion 39.4°Culet: NoneDepth 62.1%

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: $3,095 USD|Low: $684 USD|High: $4,520 USD|Avg: $1,733 USD|-8.6%
MOH London
Retailer 2
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Retailer 20
November 6, 2026
Retailer 10$684 USD
Retailer 20$710 USD
Retailer 12$794 USD
Retailer 13$828 USD
Retailer 17$915 USD
Retailer 9$1,083 USD
Retailer 8$1,148 USD
Retailer 15$1,164 USD
Retailer 18$1,171 USD
Retailer 2$1,189 USD
Retailer 5$1,402 USD
Retailer 6$1,758 USD
Retailer 16$1,859 USD
Retailer 4$1,933 USD
Retailer 19$2,375 USD
Retailer 11$2,468 USD
Retailer 3$2,541 USD
Retailer 14$2,581 USD
Retailer 7$2,800 USD
MOH London$3,095 USD

29 data points across 20 retailers

23 retailers$710 USD to $3,095 USD

Retailer 1
-
$684 USD
Price last confirmed 29 days ago
A
Retailer 2
-
$710 USD
View
Final sale: no returns
Retailer 3
-
$788 USD
View
Price last confirmed 38 days ago
Retailer 4
-
$794 USD
View
Price last confirmed 34 days ago
Retailer 5
-
$794 USD
View
Price last confirmed 25 days ago
A
Retailer 6
-
$828 USD
View
A
Retailer 7
-
$915 USD
View
A
Retailer 8
-
$1,083 USD
View
A
Retailer 9
-
$1,148 USD
View
A
Retailer 10
-
$1,164 USD
View
A
Retailer 11
-
$1,171 USD
View
A
Retailer 12
-
$1,189 USD
View
A
Retailer 13
-
$1,402 USD
View
B+
Retailer 14
-
$1,758 USD
View
B+
Retailer 15
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$1,859 USD
View
B+
Retailer 16
-
$1,933 USD
View
Retailer 17
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$2,232 USD
View
Price last confirmed 33 days ago
B+
Retailer 18
-
$2,375 USD
View
Retailer 19
-
$2,468 USD
View
Price last confirmed 26 days ago
B
Retailer 20
-
$2,541 USD
View
B
Retailer 21
-
$2,581 USD
View
B
Retailer 22
-
$2,800 USD
View
Most Expensive
B
MOH London
LG812621500 · Nov 5
$3,095 USD
£2,437 GBP
View
22 more retailers have this diamond
Prices start from $710 USDSave up to $2,385 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
1.55ct Marquise
$710 USD