CaratHunter
Plans
Round|Lab Grown|IGI

1.55ct I SI1 Round Lab Grown Diamond

EX • I/SI1 • IGI LG436074053

Shape and cutting style on the report: Round brilliant

Certificate IGI LG436074053

Diamond specifications and retailer prices

From $1,229 AUD
As of November 5, 2026
Save $5,422 AUD (82%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $6,651 AUD at MOH London · As of November 5, 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 LG436074053 or 436074053. Listed at 11 retailers as of November 5, 2026, with prices from $1,229 to $6,651, a $5,422 spread on the same certified stone. MOH London lists it at $6,651. 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 angle32.5°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436074053
Dimensions7.45 × 7.49 × 4.58 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
undefined
Top View
7.45 mm7.49 mm1.55 ctI / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG436074053
Side View
Table 53.5%Crown 32.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.4%

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: $6,651 AUD|Low: $1,229 AUD|High: $6,758 AUD|Avg: $3,470 AUD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 2$1,229 AUD
Retailer 4$2,013 AUD
Retailer 7$2,254 AUD
Retailer 5$2,336 AUD
Retailer 8$2,336 AUD
Retailer 9$2,578 AUD
Retailer 11$3,187 AUD
Retailer 6$3,684 AUD
Retailer 10$4,238 AUD
MOH London$6,651 AUD
Retailer 3$6,683 AUD

16 data points across 11 retailers

11 retailers$1,229 AUD to $6,651 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
Retailer 5
-
$2,336 AUD
View
Price last confirmed 25 days ago
B+
Retailer 6
-
$2,336 AUD
View
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
LG436074053 · Nov 5
$6,651 AUD
£3,666 GBP
View
10 more retailers have this diamond
Prices start from $1,229 AUDSave up to $5,422 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