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Radiant|Lab Grown|IGI

0.90ct D SI1 Radiant Lab Grown Diamond

GD • D/SI1 • IGI LG517218827

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG517218827

Diamond specifications and retailer prices

From $747 AUD
$525 USD
As of October 28, 2026
Save $1,197 AUD (62%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $1,945 AUD at Diamond Quarter · As of October 29, 2026
View at Diamond Quarter

About this 0.9ct lab-grown radiant diamond

This 0.9ct lab-grown radiant sits in the just-under-one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG517218827 or 517218827. Listed at 4 retailers as of October 28, 2026, with prices from $747 to $1,945, a $1,197 spread on the same certified stone. Diamond Quarter lists it at $1,945. 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

0.90
Carat
D
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.8°
Pavilion angle34.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG517218827
Dimensions6.76 × 4.89 × 3.17 mm
L/W Ratio1.38
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
6.76 mm4.89 mm0.90 ctD / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG517218827
Side View
Table 58.0%Crown 37.8°Girdle: MED-STKPavilion 34.7°Culet: NoneDepth 64.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: $747 AUD|Low: $738 AUD|High: $1,851 AUD|Avg: $1,224 AUD|+1.3%
Retailer 1
Retailer 2
Retailer 3
October 18, 2026
Retailer 1$747 AUD
Retailer 2$1,067 AUD
Retailer 3$1,851 AUD

7 data points across 3 retailers

4 retailers$747 AUD to $1,945 AUD

B+
Cheapest Retailer
-
$747 AUD
$525 USD
B
Retailer 2
-
$1,067 AUD
$749 USD
View
C
Retailer 3
-
$1,851 AUD
$1,300 USD
View
Most Expensive
C
Diamond Quarter
0.9SI1DLG27EBFEN · Oct 29
$1,945 AUD
£1,076 GBP
View
3 more retailers have this diamond
Prices start from $747 AUDSave up to $1,197 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.

B+
0.90ct Radiant
$747 AUD