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Round|Lab Grown|IGI

1.55ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG807645112

Shape and cutting style on the report: Round brilliant

Certificate IGI LG807645112

Diamond specifications and retailer prices

From $330 USD
As of October 26, 2026
Save $3,230 USD (91%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $3,560 USD at Brilliant Earth · As of October 28, 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 D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG807645112 or 807645112. Listed at 20 retailers as of October 26, 2026, with prices from $330 to $3,560, a $3,230 spread on the same certified stone. Brilliant Earth lists it at $3,560. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG807645112
Dimensions7.40 × 7.37 × 4.56 mm
L/W Ratio1.00
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
7.40 mm7.37 mm1.55 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG807645112
Side View
Table 58.0%Crown 35°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.8%

Caratlytics Score

How it works →
A+
Exceptional
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 26
Current: $3,560 USD|Low: $330 USD|High: $4,110 USD|Avg: $879 USD|-13.4%
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
October 29, 2026
Retailer 11$330 USD
Retailer 16$367 USD
Retailer 7$380 USD
Retailer 6$406 USD
Retailer 8$409 USD
Retailer 9$448 USD
Retailer 12$523 USD
Retailer 18$545 USD
Retailer 4$560 USD
Retailer 13$650 USD
Retailer 14$665 USD
Retailer 17$698 USD
Retailer 3$720 USD
Retailer 15$946 USD
Retailer 10$1,199 USD
Retailer 19$1,296 USD
Retailer 5$1,305 USD
Retailer 2$1,636 USD
Brilliant Earth$3,560 USD

16 data points across 19 retailers

20 retailers$330 USD to $3,560 USD

A+
Cheapest Retailer
-
$330 USD
A
Retailer 2
-
$367 USD
View
Final sale: no returns
A
Retailer 3
-
$380 USD
View
A
Retailer 4
-
$406 USD
View
A
Retailer 5
-
$409 USD
View
A
Retailer 6
-
$448 USD
HK$3,500 HKD
View
A
Retailer 7
-
$523 USD
£412 GBP
View
A
Retailer 8
-
$545 USD
View
A
Retailer 9
-
$560 USD
View
A
Retailer 10
-
$650 USD
€619 EUR
View
A
Retailer 11
-
$665 USD
View
A
Retailer 12
-
$698 USD
ZAR 11,273 ZAR
View
A
Retailer 13
-
$720 USD
£567 GBP
View
A
Retailer 14
-
$946 USD
A$1,456 AUD
View
B+
Retailer 15
-
$1,199 USD
View
B+
Retailer 16
-
$1,296 USD
SGD 1,752 SGD
View
B+
Retailer 17
-
$1,305 USD
View
B+
Retailer 18
-
$1,502 USD
View
B+
Retailer 19
-
$1,636 USD
£1,288 GBP
View
Most Expensive
B
Brilliant Earth
20090410A · Oct 28
$3,560 USD
View
19 more retailers have this diamond
Prices start from $330 USDSave up to $3,230 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
$330 USD