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Marquise|Lab Grown|IGI

1.55ct F FL Marquise Lab Grown Diamond

ID • F/FL • IGI LG794620705

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG794620705

Diamond specifications and retailer prices

From $640 USD
As of November 2, 2026
Save $5,040 USD (89%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $5,680 USD at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

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 F colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG794620705 or 794620705. Listed at 12 retailers as of November 2, 2026, with prices from $640 to $5,680, a $5,040 spread on the same certified stone. Do Amore Diamonds lists it at $5,680. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
F
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG794620705
Dimensions11.52 × 6.02 × 3.85 mm
L/W Ratio1.91
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
11.52 mm6.02 mm1.55 ctF / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG794620705
Side View
Table 59.0%Crown 35.4°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 64.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $5,680 USD|Low: $640 USD|High: $7,000 USD|Avg: $2,534 USD|-18.9%
Do Amore Diamonds
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 2, 2026
Retailer 10$640 USD
Retailer 13$696 USD
Retailer 2$902 USD
Retailer 12$1,213 USD
Retailer 14$1,270 USD
Retailer 8$1,842 USD
Retailer 5$1,960 USD
Retailer 6$2,261 USD
Retailer 11$2,304 USD
Retailer 9$2,380 USD
Retailer 4$2,431 USD
Retailer 3$3,220 USD
Retailer 15$3,382 USD
Retailer 7$4,193 USD
Do Amore Diamonds$5,680 USD

35 data points across 15 retailers

12 retailers$640 USD to $5,680 USD

A
Cheapest Retailer
-
$640 USD
A
Retailer 2
-
$696 USD
View
A
Retailer 3
-
$902 USD
£710 GBP
View
A
Retailer 4
-
$1,213 USD
View
A
Retailer 5
-
$1,270 USD
View
B+
Retailer 6
-
$1,842 USD
View
B+
Retailer 7
-
$2,304 USD
View
B+
Retailer 8
-
$2,380 USD
View
B+
Retailer 9
-
$2,431 USD
View
B
Retailer 10
-
$3,220 USD
View
B
Retailer 11
-
$3,382 USD
£2,663 GBP
View
Most Expensive
B
Do Amore Diamonds
27-989581854 · Nov 2
$5,680 USD
View
11 more retailers have this diamond
Prices start from $640 USDSave up to $5,040 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
$640 USD