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 $383 NZD
$216 USD
As of November 1, 2026
Save $1,697 NZD (82%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $2,080 NZD 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 $383 to $2,080, a $1,697 spread on the same certified stone. Reve Diamonds lists it at $2,080. 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

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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 1
Current: $774 NZD|Low: $342 NZD|High: $2,012 NZD|Avg: $795 NZD|+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$342 NZD
Retailer 6$383 NZD
Retailer 4$426 NZD
Retailer 8$577 NZD
Retailer 3$714 NZD
Retailer 7$762 NZD
Retailer 1$774 NZD
Retailer 5$1,372 NZD
Retailer 2$1,990 NZD

43 data points across 9 retailers

22 retailers$383 NZD to $2,080 NZD

Retailer 1
-
$342 NZD
$193 USD
Price last confirmed 12 days ago
Retailer 2
-
$342 NZD
$193 USD
View
Price last confirmed 41 days ago
Retailer 3
-
$342 NZD
$193 USD
View
Price last confirmed 33 days ago
A
Retailer 4
-
$383 NZD
$216 USD
View
Final sale: no returns
Retailer 5
-
$397 NZD
$224 USD
View
Price last confirmed 40 days ago
Retailer 6
-
$421 NZD
$237 USD
View
Price last confirmed 40 days ago
Retailer 7
-
$421 NZD
$237 USD
View
Price last confirmed 62 days ago
Retailer 8
-
$421 NZD
$237 USD
View
Price last confirmed 33 days ago
A
Retailer 9
-
$426 NZD
$240 USD
View
Retailer 10
-
$426 NZD
$240 USD
View
Price last confirmed 25 days ago
B+
Retailer 11
-
$577 NZD
$325 USD
View
A
Retailer 12
-
$714 NZD
€383 EUR
View
Retailer 13
-
$762 NZD
£338 GBP
View
Price last confirmed 16 days ago
A
Retailer 14
-
$774 NZD
£343 GBP
View
B+
Retailer 15
-
$795 NZD
$448 USD
View
Retailer 16
-
$1,368 NZD
$771 USD
View
Price last confirmed 33 days ago
B
Retailer 17
-
$1,368 NZD
$771 USD
View
Retailer 18
-
$1,368 NZD
$771 USD
View
Price last confirmed 42 days ago
B
Retailer 19
-
$1,372 NZD
$773 USD
View
B
Retailer 20
-
$1,463 NZD
$824 USD
View
B
Retailer 21
-
$1,990 NZD
£883 GBP
View
Most Expensive
B
Reve Diamonds
9A134B3A8 · Nov 1
$2,080 NZD
$1,172 USD
View
21 more retailers have this diamond
Prices start from $383 NZDSave up to $1,697 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
$383 NZD