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Oval|Lab Grown|IGI

1.55ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG542230837

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG542230837

Diamond specifications and retailer prices

From $345 AUD
$242 USD
As of October 30, 2026
3 retailers carry this diamond
Most expensive: $1,328 AUD at Rare Carat · As of September 9, 2026
View at Rare Carat

About this 1.55ct lab-grown oval diamond

This 1.55ct lab-grown oval 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 LG542230837 or 542230837. Listed at 3 retailers as of October 30, 2026. 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 angle34.8°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG542230837
Dimensions9.21 × 6.57 × 4.14 mm
L/W Ratio1.40
Girdle conditionFaceted
Culet sizePointed
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
9.21 mm6.57 mm1.55 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG542230837
Side View
Table 60.0%Crown 34.8°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 63.0%

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: Oct 30
Current: $1,328 AUD|Low: $194 AUD|High: $2,990 AUD|Avg: $1,000 AUD|-13.3%
Rare Carat
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
September 27, 2026
Retailer 14$194 AUD
Retailer 2$345 AUD
Retailer 9$364 AUD
Retailer 8$594 AUD
Retailer 13$598 AUD
Retailer 7$641 AUD
Retailer 6$735 AUD
Retailer 10$761 AUD
Retailer 12$819 AUD
Retailer 5$1,068 AUD
Retailer 4$1,246 AUD
Rare Carat$1,328 AUD
Retailer 3$1,727 AUD
Retailer 11$1,751 AUD

70 data points across 14 retailers

3 retailers

A
Cheapest Retailer
-
$345 AUD
$242 USD
Final sale: no returns
Retailer 2
-
$1,068 AUD
$750 USD
View
Price last confirmed 46 days ago
Most Expensive
Rare Carat
D14-29A · Sep 9
$1,328 AUD
$933 USD
View
Price last confirmed 53 days ago
2 more retailers have this diamond
Prices start from $345 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 Oval
$345 AUD