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Round|Lab Grown|IGI

1.55ct F IF Round Lab Grown Diamond

ID • F/IF • IGI LG815609356

Shape and cutting style on the report: Round brilliant

Certificate IGI LG815609356

Diamond specifications and retailer prices

From $346 USD
As of November 1, 2026
Save $3,364 USD (91%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $3,710 USD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.55ct lab-grown round diamond

This 1.55ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG815609356 or 815609356. Listed at 23 retailers as of November 1, 2026, with prices from $346 to $3,710, a $3,364 spread on the same certified stone. Brilliant Earth lists it at $3,710. 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
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG815609356
Dimensions7.47 × 7.49 × 4.51 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.47 mm7.49 mm1.55 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG815609356
Side View
Table 58.0%Crown 33.5°Girdle: MediumPavilion 40.6°Culet: NoneDepth 60.2%

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 1
Current: $3,710 USD|Low: $346 USD|High: $3,710 USD|Avg: $1,178 USD
Brilliant Earth
Retailer 2
Retailer 3
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Retailer 5
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Retailer 7
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Retailer 22
November 2, 2026
Retailer 14$346 USD
Retailer 8$401 USD
Retailer 3$428 USD
Retailer 11$428 USD
Retailer 6$474 USD
Retailer 22$572 USD
Retailer 21$580 USD
Retailer 2$673 USD
Retailer 4$685 USD
Retailer 13$739 USD
Retailer 16$761 USD
Retailer 12$909 USD
Retailer 19$995 USD
Retailer 18$996 USD
Retailer 5$1,377 USD
Retailer 7$1,384 USD
Retailer 10$1,420 USD
Retailer 15$1,622 USD
Retailer 17$1,674 USD
Retailer 9$1,849 USD
Retailer 20$1,965 USD
Brilliant Earth$3,710 USD

33 data points across 22 retailers

23 retailers$346 USD to $3,710 USD

A
Cheapest Retailer
-
$346 USD
A
Retailer 2
-
$401 USD
View
Retailer 3
-
$428 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
$428 USD
View
A
Retailer 5
-
$474 USD
HK$3,700 HKD
View
A
Retailer 6
-
$572 USD
View
A
Retailer 7
-
$580 USD
View
A
Retailer 8
-
$673 USD
€641 EUR
View
A
Retailer 9
-
$685 USD
View
A
Retailer 10
-
$739 USD
ZAR 11,937 ZAR
View
A
Retailer 11
-
$761 USD
£599 GBP
View
B+
Retailer 12
-
$909 USD
View
B+
Retailer 13
-
$995 USD
A$1,530 AUD
View
B+
Retailer 14
-
$996 USD
View
B+
Retailer 15
-
$1,377 USD
View
B+
Retailer 16
-
$1,384 USD
SGD 1,870 SGD
View
B+
Retailer 17
-
$1,420 USD
View
B
Retailer 18
-
$1,543 USD
View
B
Retailer 19
-
$1,622 USD
View
B+
Retailer 20
-
$1,674 USD
£1,318 GBP
View
B
Retailer 21
-
$1,849 USD
View
B
Retailer 22
-
$1,965 USD
View
Most Expensive
B
Brilliant Earth
20763193A · Nov 2
$3,710 USD
View
22 more retailers have this diamond
Prices start from $346 USDSave up to $3,364 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 Round
$346 USD