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Radiant|Lab Grown|IGI

1.51ct D SI1 Radiant Lab Grown Diamond

VG • D/SI1 • IGI LG12417712

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

Certificate IGI LG12417712

Diamond specifications and retailer prices

From $287 AUD
As of November 6, 2026
Save $2,348 AUD (89%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $2,634 AUD at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

About this 1.51ct lab-grown radiant diamond

This 1.51ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG12417712 or 12417712. Listed at 9 retailers as of November 2, 2026, with prices from $287 to $2,634, a $2,348 spread on the same certified stone. Do Amore Diamonds lists it at $2,634. 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

1.51
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.6°
Pavilion angle31.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG12417712
Dimensions7.26 × 5.78 × 4.05 mm
L/W Ratio1.26
Cert comments
As Grown - No indications of post-growth treatment. This Laboratory Grown Diamond was created by High Pressure High Tempertature (HPHT) growth process.
Top View
7.26 mm5.78 mm1.51 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG12417712
Side View
Table 63.5%Crown 42.6°Girdle: STK-THKPavilion 31.8°Culet: NoneDepth 70.1%

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 6
Current: $2,634 AUD|Low: $263 AUD|High: $2,634 AUD|Avg: $1,223 AUD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 3$287 AUD
Retailer 7$332 AUD
Retailer 6$617 AUD
Retailer 5$1,145 AUD
Retailer 2$1,224 AUD
Retailer 4$1,260 AUD
Retailer 8$1,514 AUD
Retailer 9$1,776 AUD
Do Amore Diamonds$2,634 AUD

18 data points across 9 retailers

9 retailers$287 AUD to $2,634 AUD

A
Cheapest Retailer
-
$287 AUD
A
Retailer 2
-
$332 AUD
View
B+
Retailer 3
-
$617 AUD
View
B
Retailer 4
-
$1,145 AUD
View
B
Retailer 5
-
$1,224 AUD
View
B
Retailer 6
-
$1,260 AUD
View
Retailer 7
-
$1,514 AUD
View
Price last confirmed 9 days ago
B
Retailer 8
-
$1,776 AUD
View
Most Expensive
B
Do Amore Diamonds
27-F96B3FBEF · Nov 2
$2,634 AUD
$1,810 USD
View
8 more retailers have this diamond
Prices start from $287 AUDSave up to $2,348 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
1.51ct Radiant
$287 AUD