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Round|Lab Grown|IGI

1.50ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG794627540

Shape and cutting style on the report: Round brilliant

Certificate IGI LG794627540

Diamond specifications and retailer prices

From $409 NZD
As of November 5, 2026
Save $1,900 NZD (82%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $2,309 NZD at Brilliant Earth · As of November 5, 2026
View at Brilliant Earth

About this 1.5ct lab-grown round diamond

This 1.5ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG794627540 or 794627540. Listed at 22 retailers as of November 5, 2026, with prices from $409 to $2,309, a $1,900 spread on the same certified stone. Brilliant Earth lists it at $2,309. 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

1.50
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG794627540
Dimensions7.44 × 7.42 × 4.48 mm
L/W Ratio1.00
Girdle conditionFaceted
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
7.44 mm7.42 mm1.50 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG794627540
Side View
Table 59.0%Crown 33.1°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 60.3%

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 5
Current: $2,309 NZD|Low: $406 NZD|High: $2,309 NZD|Avg: $1,087 NZD|+1.6%
Brilliant Earth
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
November 6, 2026
Retailer 9$409 NZD
Retailer 16$456 NZD
Retailer 18$474 NZD
Retailer 4$507 NZD
Retailer 5$509 NZD
Retailer 6$864 NZD
Retailer 2$878 NZD
Retailer 11$927 NZD
Retailer 12$936 NZD
Retailer 3$963 NZD
Retailer 17$1,017 NZD
Retailer 14$1,317 NZD
Retailer 10$1,633 NZD
Retailer 15$1,638 NZD
Retailer 8$1,726 NZD
Retailer 13$2,029 NZD
Retailer 7$2,307 NZD
Brilliant Earth$2,309 NZD

29 data points across 18 retailers

22 retailers$409 NZD to $2,309 NZD

A
Cheapest Retailer
-
$409 NZD
A
Retailer 2
-
$456 NZD
View
Final sale: no returns
Retailer 3
-
$473 NZD
View
Price last confirmed 67 days ago
A
Retailer 4
-
$474 NZD
View
A
Retailer 5
-
$507 NZD
View
Retailer 6
-
$509 NZD
View
Price last confirmed 13 days ago
A
Retailer 7
-
$777 NZD
View
A
Retailer 8
-
$864 NZD
View
A
Retailer 9
-
$878 NZD
View
A
Retailer 10
-
$927 NZD
View
A
Retailer 11
-
$936 NZD
View
B+
Retailer 12
-
$963 NZD
View
B+
Retailer 13
-
$1,017 NZD
View
B+
Retailer 14
-
$1,317 NZD
View
B+
Retailer 15
-
$1,411 NZD
View
Retailer 16
-
$1,618 NZD
View
Price last confirmed 47 days ago
B
Retailer 17
-
$1,633 NZD
View
B
Retailer 18
-
$1,638 NZD
View
B
Retailer 19
-
$1,726 NZD
View
B
Retailer 20
-
$2,029 NZD
View
B
Retailer 21
-
$2,307 NZD
View
Most Expensive
B
Brilliant Earth
20701253A · Nov 5
$2,309 NZD
$1,280 USD
View
21 more retailers have this diamond
Prices start from $409 NZDSave up to $1,900 NZD

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
1.50ct Round
$409 NZD