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Round|Lab Grown|IGI

1.55ct I SI1 Round Lab Grown Diamond

EX • I/SI1 • IGI LG483197577

Shape and cutting style on the report: Round brilliant

Certificate IGI LG483197577

Diamond specifications and retailer prices

From $1,229 AUD
As of November 5, 2026
Save $5,440 AUD (82%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $6,669 AUD at MOH London · As of November 3, 2026
View at MOH London

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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG483197577 or 483197577. Listed at 11 retailers as of November 3, 2026, with prices from $1,229 to $6,669, a $5,440 spread on the same certified stone. MOH London lists it at $6,669. 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG483197577
Dimensions7.51 × 7.48 × 4.54 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.51 mm7.48 mm1.55 ctI / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG483197577
Side View
Table 60.0%Crown 32.9°Girdle: THN-MEDPavilion 41.5°Culet: NoneDepth 60.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $6,669 AUD|Low: $1,229 AUD|High: $6,758 AUD|Avg: $3,556 AUD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 2$1,229 AUD
Retailer 4$2,013 AUD
Retailer 7$2,254 AUD
Retailer 5$2,336 AUD
Retailer 8$2,578 AUD
Retailer 3$2,670 AUD
Retailer 10$3,187 AUD
Retailer 6$3,684 AUD
Retailer 9$4,238 AUD
MOH London$6,669 AUD
Retailer 11$6,683 AUD

14 data points across 11 retailers

11 retailers$1,229 AUD to $6,669 AUD

A
Cheapest Retailer
-
$1,229 AUD
B+
Retailer 2
-
$2,013 AUD
View
B+
Retailer 3
-
$2,190 AUD
View
B+
Retailer 4
-
$2,254 AUD
View
Final sale: no returns
B+
Retailer 5
-
$2,336 AUD
View
Retailer 6
-
$2,336 AUD
View
Price last confirmed 25 days ago
B+
Retailer 7
-
$2,578 AUD
View
B
Retailer 8
-
$3,684 AUD
View
B
Retailer 9
-
$4,238 AUD
View
B
Retailer 10
-
$4,377 AUD
View
Most Expensive
B
MOH London
LG483197577 · Nov 3
$6,669 AUD
£3,676 GBP
View
10 more retailers have this diamond
Prices start from $1,229 AUDSave up to $5,440 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
$1,229 AUD