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Round|Lab Grown|IGI

1.51ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG844615897

Shape and cutting style on the report: Round brilliant

Certificate IGI LG844615897

Diamond specifications and retailer prices

From $608 AUD
As of October 30, 2026
Save $472 AUD (44%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,627 AUD at Reve Diamonds · As of October 30, 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG844615897 or 844615897. Listed at 15 retailers as of October 30, 2026, with a 78% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG844615897
Dimensions7.39 × 7.35 × 4.52 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.39 mm7.35 mm1.51 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG844615897
Side View
Table 58.0%Crown 33.7°Girdle: MediumPavilion 41°Culet: NoneDepth 61.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $585 AUD|Low: $256 AUD|High: $1,627 AUD|Avg: $762 AUD|-0.2%
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
Reve Diamonds
October 30, 2026
Retailer 14$256 AUD
Retailer 5$285 AUD
Retailer 11$297 AUD
Retailer 10$317 AUD
Retailer 12$319 AUD
Retailer 2$565 AUD
Retailer 8$569 AUD
Retailer 1$585 AUD
Retailer 15$608 AUD
Retailer 6$696 AUD
Retailer 4$1,022 AUD
Retailer 13$1,080 AUD
Retailer 7$1,100 AUD
Retailer 3$1,128 AUD
Retailer 9$1,495 AUD
Reve Diamonds$1,627 AUD

16 data points across 16 retailers

15 retailers$608 AUD to $1,080 AUD

Retailer 1
-
$256 AUD
Price last confirmed 8 days ago
Retailer 2
-
$297 AUD
View
Price last confirmed 10 days ago
Retailer 3
-
$317 AUD
View
Price last confirmed 12 days ago
Retailer 4
-
$319 AUD
View
Price last confirmed 10 days ago
Retailer 5
-
$565 AUD
View
Price last confirmed 7 days ago
Retailer 6
-
$569 AUD
View
Price last confirmed 7 days ago
Retailer 7
-
$585 AUD
View
Price last confirmed 7 days ago
A
Retailer 8
-
$608 AUD
View
Retailer 9
-
$696 AUD
View
Price last confirmed 7 days ago
Retailer 10
-
$1,022 AUD
View
Price last confirmed 10 days ago
B
Retailer 11
-
$1,080 AUD
View
Retailer 12
-
$1,100 AUD
View
Price last confirmed 8 days ago
Retailer 13
-
$1,128 AUD
View
Price last confirmed 16 days ago
Retailer 14
-
$1,495 AUD
View
Price last confirmed 8 days ago
Most Expensive
Reve Diamonds
61D80709D · Oct 30
$1,627 AUD
$1,118 USD
View
Price last confirmed 7 days ago
14 more retailers have this diamond
Prices start from $608 AUDSave up to $472 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
$608 AUD