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Round|Lab Grown|IGI

1.55ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG772678680

Shape and cutting style on the report: Round brilliant

Certificate IGI LG772678680

Diamond specifications and retailer prices

From $281 AUD
As of November 1, 2026
Save $2,418 AUD (90%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,700 AUD at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

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 top-tier cut grade and certified by IGI LG772678680 or 772678680. Listed at 15 retailers as of November 1, 2026, with prices from $281 to $2,700, a $2,418 spread on the same certified stone. Do Amore Diamonds lists it at $2,700. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.55
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG772678680
Dimensions7.42 × 7.46 × 0.00 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.42 mm7.46 mm1.55 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG772678680
Side View
Table 58.0%Crown 34.5°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 60.9%

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: Nov 1
Current: $2,700 AUD|Low: $270 AUD|High: $2,700 AUD|Avg: $1,036 AUD
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 12$281 AUD
Retailer 3$327 AUD
Retailer 14$471 AUD
Retailer 7$521 AUD
Retailer 9$623 AUD
Retailer 5$666 AUD
Retailer 10$806 AUD
Retailer 8$1,014 AUD
Retailer 11$1,064 AUD
Retailer 15$1,147 AUD
Retailer 4$1,239 AUD
Retailer 2$1,543 AUD
Retailer 6$1,544 AUD
Retailer 13$1,628 AUD
Do Amore Diamonds$2,700 AUD

25 data points across 15 retailers

15 retailers$281 AUD to $2,700 AUD

A
Cheapest Retailer
-
$281 AUD
A
Retailer 2
-
$327 AUD
View
B+
Retailer 3
-
$471 AUD
View
A
Retailer 4
-
$521 AUD
View
A
Retailer 5
-
$623 AUD
View
A
Retailer 6
-
$666 AUD
View
B+
Retailer 7
-
$806 AUD
View
B+
Retailer 8
-
$1,014 AUD
View
B+
Retailer 9
-
$1,064 AUD
View
B+
Retailer 10
-
$1,147 AUD
View
B
Retailer 11
-
$1,239 AUD
View
B
Retailer 12
-
$1,543 AUD
View
B
Retailer 13
-
$1,544 AUD
View
B
Retailer 14
-
$1,628 AUD
View
Most Expensive
B
Do Amore Diamonds
27-F2486157E · Nov 2
$2,700 AUD
$1,890 USD
View
14 more retailers have this diamond
Prices start from $281 AUDSave up to $2,418 AUD

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
$281 AUD