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Round|Lab Grown|IGI

1.55ct D SI1 Round Lab Grown Diamond

VG • D/SI1 • IGI LG784643985

Shape and cutting style on the report: Round brilliant

Certificate IGI LG784643985

Diamond specifications and retailer prices

From $285 CAD
As of November 1, 2026
Save $1,559 CAD (85%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,844 CAD at Brilliant Earth · As of November 3, 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 SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG784643985 or 784643985. Listed at 14 retailers as of November 1, 2026, with prices from $285 to $1,844, a $1,559 spread on the same certified stone. Brilliant Earth lists it at $1,844. 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
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle37°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784643985
Dimensions7.41 × 7.32 × 4.55 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
7.41 mm7.32 mm1.55 ctD / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG784643985
Side View
Table 59.0%Crown 37°Girdle: MED-THKPavilion 40.4°Culet: NoneDepth 61.6%

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: $1,844 CAD|Low: $179 CAD|High: $2,346 CAD|Avg: $872 CAD|-21.4%
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
November 4, 2026
Retailer 7$179 CAD
Retailer 12$285 CAD
Retailer 13$318 CAD
Retailer 3$352 CAD
Retailer 8$587 CAD
Retailer 15$610 CAD
Retailer 11$640 CAD
Retailer 4$642 CAD
Retailer 14$712 CAD
Retailer 10$945 CAD
Retailer 2$1,033 CAD
Retailer 6$1,207 CAD
Retailer 9$1,647 CAD
Retailer 5$1,682 CAD
Brilliant Earth$1,844 CAD

35 data points across 15 retailers

14 retailers$285 CAD to $1,844 CAD

A
Cheapest Retailer
-
$285 CAD
A
Retailer 2
-
$318 CAD
View
Final sale: no returns
Retailer 3
-
$348 CAD
View
Price last confirmed 52 days ago
Retailer 4
-
$352 CAD
View
Price last confirmed 12 days ago
A
Retailer 5
-
$587 CAD
View
B+
Retailer 6
-
$610 CAD
View
B+
Retailer 7
-
$640 CAD
View
B+
Retailer 8
-
$642 CAD
View
B+
Retailer 9
-
$712 CAD
View
B+
Retailer 10
-
$945 CAD
View
B
Retailer 11
-
$1,033 CAD
View
B
Retailer 12
-
$1,207 CAD
View
B
Retailer 13
-
$1,647 CAD
View
Most Expensive
B
Brilliant Earth
20185628A · Nov 3
$1,844 CAD
$1,320 USD
View
13 more retailers have this diamond
Prices start from $285 CADSave up to $1,559 CAD

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
$285 CAD