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Round|Lab Grown|IGI

1.51ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • IGI LG747517989

Shape and cutting style on the report: Round brilliant

Certificate IGI LG747517989

Diamond specifications and retailer prices

From $334 AUD
As of November 5, 2026
Save $1,525 AUD (82%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $1,859 AUD at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round 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 LG747517989 or 747517989. Listed at 22 retailers as of November 5, 2026, with prices from $334 to $1,859, a $1,525 spread on the same certified stone. Reve Diamonds lists it at $1,859. 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

1.51
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG747517989
Dimensions7.28 × 7.31 × 4.57 mm
L/W Ratio1.00
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
7.28 mm7.31 mm1.51 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG747517989
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 62.7%

Caratlytics Score

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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 5
Current: $641 AUD|Low: $331 AUD|High: $1,859 AUD|Avg: $862 AUD|-0.9%
Retailer 1
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
Retailer 15
Retailer 16
Retailer 17
Reve Diamonds
November 6, 2026
Retailer 8$334 AUD
Retailer 14$374 AUD
Retailer 16$387 AUD
Retailer 4$414 AUD
Retailer 5$414 AUD
Retailer 1$641 AUD
Retailer 2$644 AUD
Retailer 6$701 AUD
Retailer 11$771 AUD
Retailer 3$774 AUD
Retailer 10$776 AUD
Retailer 17$824 AUD
Retailer 13$1,086 AUD
Retailer 15$1,100 AUD
Retailer 9$1,331 AUD
Retailer 7$1,406 AUD
Retailer 12$1,656 AUD
Reve Diamonds$1,859 AUD

29 data points across 18 retailers

22 retailers$334 AUD to $1,859 AUD

A
Cheapest Retailer
-
$334 AUD
A
Retailer 2
-
$374 AUD
View
Final sale: no returns
A
Retailer 3
-
$387 AUD
View
Retailer 4
-
$414 AUD
View
Price last confirmed 12 days ago
A
Retailer 5
-
$414 AUD
View
A
Retailer 6
-
$641 AUD
View
A
Retailer 7
-
$644 AUD
View
B+
Retailer 8
-
$701 AUD
View
B+
Retailer 9
-
$771 AUD
View
B+
Retailer 10
-
$774 AUD
View
B+
Retailer 11
-
$776 AUD
View
B+
Retailer 12
-
$824 AUD
View
B
Retailer 13
-
$1,086 AUD
View
B+
Retailer 14
-
$1,100 AUD
View
Retailer 15
-
$1,134 AUD
View
Price last confirmed 68 days ago
Retailer 16
-
$1,320 AUD
View
Price last confirmed 46 days ago
B
Retailer 17
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$1,331 AUD
View
B
Retailer 18
-
$1,336 AUD
View
B
Retailer 19
-
$1,406 AUD
View
B
Retailer 20
-
$1,656 AUD
View
Retailer 21
-
$1,743 AUD
View
Price last confirmed 21 days ago
Most Expensive
B
Reve Diamonds
AB7C357F2 · Nov 6
$1,859 AUD
$1,302 USD
View
21 more retailers have this diamond
Prices start from $334 AUDSave up to $1,525 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 Round
$334 AUD