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Round|Lab Grown|IGI

1.55ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG786646560

Shape and cutting style on the report: Round brilliant

Certificate IGI LG786646560

Diamond specifications and retailer prices

From $391 USD
As of October 29, 2026
Save $3,219 USD (89%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $3,610 USD at Brilliant Earth · As of October 29, 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 E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG786646560 or 786646560. Listed at 25 retailers as of October 29, 2026, with prices from $391 to $3,610, a $3,219 spread on the same certified stone. Brilliant Earth lists it at $3,610. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786646560
Dimensions7.46 × 7.42 × 4.59 mm
L/W Ratio1.01
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
7.46 mm7.42 mm1.55 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG786646560
Side View
Table 58.0%Crown 34.8°Girdle: MediumPavilion 41°Culet: NoneDepth 61.7%

Caratlytics Score

How it works →
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: Oct 29
Current: $3,610 USD|Low: $437 USD|High: $3,830 USD|Avg: $1,240 USD|-5.7%
Brilliant Earth
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
October 30, 2026
Retailer 9$437 USD
Retailer 6$438 USD
Retailer 12$635 USD
Retailer 7$650 USD
Retailer 5$730 USD
Retailer 10$765 USD
Retailer 2$792 USD
Retailer 11$832 USD
Retailer 8$1,125 USD
Retailer 15$1,163 USD
Retailer 4$1,541 USD
Retailer 3$1,814 USD
Retailer 13$1,895 USD
Retailer 14$2,160 USD
Brilliant Earth$3,610 USD

42 data points across 15 retailers

25 retailers$391 USD to $3,610 USD

A
Cheapest Retailer
-
$391 USD
A
Retailer 2
-
$437 USD
View
Final sale: no returns
A
Retailer 3
-
$438 USD
View
A
Retailer 4
-
$484 USD
View
A
Retailer 5
-
$484 USD
View
A
Retailer 6
-
$538 USD
HK$4,200 HKD
View
A
Retailer 7
-
$635 USD
View
A
Retailer 8
-
$650 USD
View
A
Retailer 9
-
$730 USD
View
A
Retailer 10
-
$765 USD
€729 EUR
View
A
Retailer 11
-
$792 USD
£624 GBP
View
A
Retailer 12
-
$832 USD
ZAR 13,449 ZAR
View
A
Retailer 13
-
$945 USD
View
B+
Retailer 14
-
$1,125 USD
A$1,730 AUD
View
B+
Retailer 15
-
$1,163 USD
View
B+
Retailer 16
-
$1,541 USD
SGD 2,082 SGD
View
B+
Retailer 17
-
$1,557 USD
View
B+
Retailer 18
-
$1,562 USD
View
B+
Retailer 19
-
$1,594 USD
View
B
Retailer 20
-
$1,802 USD
View
B
Retailer 21
-
$1,814 USD
View
B+
Retailer 22
-
$1,895 USD
£1,492 GBP
View
Retailer 23
-
$2,160 USD
View
Price last confirmed 12 days ago
B
Retailer 24
-
$2,845 USD
£2,240 GBP
View
Most Expensive
B
Brilliant Earth
21370015A · Oct 29
$3,610 USD
View
24 more retailers have this diamond
Prices start from $391 USDSave up to $3,219 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
$391 USD