CaratHunter
Plans
Round|Lab Grown|IGI

1.51ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG779621240

Shape and cutting style on the report: Round brilliant

Certificate IGI LG779621240

Diamond specifications and retailer prices

From $314 AUD
As of November 5, 2026
Save $1,480 AUD (82%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $1,794 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 LG779621240 or 779621240. Listed at 21 retailers as of November 5, 2026, with prices from $314 to $1,794, a $1,480 spread on the same certified stone. Reve Diamonds lists it at $1,794. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG779621240
Dimensions7.33 × 7.38 × 4.52 mm
L/W Ratio1.01
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
7.33 mm7.38 mm1.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG779621240
Side View
Table 57.0%Crown 34.7°Girdle: MediumPavilion 40.5°Culet: NoneDepth 61.6%

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: $601 AUD|Low: $301 AUD|High: $1,794 AUD|Avg: $850 AUD|-1.2%
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
Retailer 18
Reve Diamonds
November 6, 2026
Retailer 17$314 AUD
Retailer 9$350 AUD
Retailer 3$364 AUD
Retailer 2$389 AUD
Retailer 7$389 AUD
Retailer 5$526 AUD
Retailer 1$601 AUD
Retailer 11$626 AUD
Retailer 4$637 AUD
Retailer 12$713 AUD
Retailer 8$751 AUD
Retailer 16$777 AUD
Retailer 15$954 AUD
Retailer 13$1,086 AUD
Retailer 6$1,250 AUD
Retailer 10$1,324 AUD
Retailer 18$1,486 AUD
Retailer 14$1,557 AUD
Reve Diamonds$1,794 AUD

44 data points across 19 retailers

21 retailers$314 AUD to $1,794 AUD

A
Cheapest Retailer
-
$314 AUD
A
Retailer 2
-
$350 AUD
View
Final sale: no returns
A
Retailer 3
-
$364 AUD
View
A
Retailer 4
-
$389 AUD
View
Retailer 5
-
$389 AUD
View
Price last confirmed 12 days ago
B+
Retailer 6
-
$526 AUD
View
A
Retailer 7
-
$601 AUD
View
A
Retailer 8
-
$626 AUD
View
A
Retailer 9
-
$637 AUD
View
A
Retailer 10
-
$713 AUD
View
B+
Retailer 11
-
$751 AUD
View
B+
Retailer 12
-
$777 AUD
View
B+
Retailer 13
-
$954 AUD
View
Retailer 14
-
$1,010 AUD
View
Price last confirmed 9 days ago
B
Retailer 15
-
$1,086 AUD
View
B+
Retailer 16
-
$1,100 AUD
View
B
Retailer 17
-
$1,250 AUD
View
B
Retailer 18
-
$1,324 AUD
View
B
Retailer 19
-
$1,486 AUD
View
B
Retailer 20
-
$1,557 AUD
View
Most Expensive
B
Reve Diamonds
34A7E3B50 · Nov 6
$1,794 AUD
$1,256 USD
View
20 more retailers have this diamond
Prices start from $314 AUDSave up to $1,480 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
$314 AUD