CaratHunter
Plans
Round|Lab Grown|IGI

1.50ct G SI1 Round Lab Grown Diamond

EX • G/SI1 • IGI LG818685585

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818685585

Diamond specifications and retailer prices

From $307 AUD
$216 USD
As of November 1, 2026
Save $1,361 AUD (82%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $1,669 AUD at Reve Diamonds · As of November 1, 2026
View at Reve Diamonds

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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG818685585 or 818685585. Listed at 22 retailers as of November 1, 2026, with prices from $307 to $1,669, a $1,361 spread on the same certified stone. Reve Diamonds lists it at $1,669. 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
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.7°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818685585
Dimensions7.40 × 7.45 × 4.47 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
7.40 mm7.45 mm1.50 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818685585
Side View
Table 59.0%Crown 31.7°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 60.1%

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 1
Current: $621 AUD|Low: $275 AUD|High: $1,615 AUD|Avg: $638 AUD|+6.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 9$275 AUD
Retailer 6$307 AUD
Retailer 4$342 AUD
Retailer 8$463 AUD
Retailer 3$573 AUD
Retailer 7$611 AUD
Retailer 1$621 AUD
Retailer 5$1,100 AUD
Retailer 2$1,596 AUD

43 data points across 9 retailers

22 retailers$307 AUD to $1,669 AUD

Retailer 1
-
$275 AUD
$193 USD
Price last confirmed 12 days ago
Retailer 2
-
$275 AUD
$193 USD
View
Price last confirmed 41 days ago
Retailer 3
-
$275 AUD
$193 USD
View
Price last confirmed 34 days ago
A
Retailer 4
-
$307 AUD
$216 USD
View
Final sale: no returns
Retailer 5
-
$319 AUD
$224 USD
View
Price last confirmed 41 days ago
Retailer 6
-
$337 AUD
$237 USD
View
Price last confirmed 40 days ago
Retailer 7
-
$337 AUD
$237 USD
View
Price last confirmed 62 days ago
Retailer 8
-
$337 AUD
$237 USD
View
Price last confirmed 33 days ago
A
Retailer 9
-
$342 AUD
$240 USD
View
Retailer 10
-
$342 AUD
$240 USD
View
Price last confirmed 25 days ago
B+
Retailer 11
-
$463 AUD
$325 USD
View
A
Retailer 12
-
$573 AUD
€383 EUR
View
Retailer 13
-
$611 AUD
£338 GBP
View
Price last confirmed 16 days ago
A
Retailer 14
-
$621 AUD
£343 GBP
View
B+
Retailer 15
-
$638 AUD
$448 USD
View
Retailer 16
-
$1,098 AUD
$771 USD
View
Price last confirmed 33 days ago
B
Retailer 17
-
$1,098 AUD
$771 USD
View
Retailer 18
-
$1,098 AUD
$771 USD
View
Price last confirmed 42 days ago
B
Retailer 19
-
$1,100 AUD
$773 USD
View
B
Retailer 20
-
$1,174 AUD
$824 USD
View
B
Retailer 21
-
$1,596 AUD
£883 GBP
View
Most Expensive
B
Reve Diamonds
9A134B3A8 · Nov 1
$1,669 AUD
$1,172 USD
View
21 more retailers have this diamond
Prices start from $307 AUDSave up to $1,361 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
1.50ct Round
$307 AUD