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Round|Lab Grown|IGI

1.59ct I SI2 Round Lab Grown Diamond

EX • I/SI2 • IGI LG436045603

Shape and cutting style on the report: Round brilliant

Certificate IGI LG436045603

Diamond specifications and retailer prices

From $1,253 AUD
$880 USD
As of October 30, 2026
Save $5,681 AUD (82%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $6,934 AUD at MOH London · As of October 29, 2026
View at MOH London

About this 1.59ct lab-grown round diamond

This 1.59ct lab-grown round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436045603 or 436045603. Listed at 10 retailers as of October 29, 2026, with prices from $1,253 to $6,934, a $5,681 spread on the same certified stone. MOH London lists it at $6,934. 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

1.59
Carat
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436045603
Dimensions7.41 × 7.47 × 4.57 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.41 mm7.47 mm1.59 ctI / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG436045603
Side View
Table 61.5%Crown 35.5°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 61.3%

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: Oct 30
Current: $6,934 AUD|Low: $1,253 AUD|High: $6,979 AUD|Avg: $3,200 AUD|+0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 2$1,253 AUD
Retailer 4$1,851 AUD
Retailer 7$2,013 AUD
Retailer 9$2,073 AUD
Retailer 5$2,147 AUD
Retailer 11$2,963 AUD
Retailer 6$3,397 AUD
Retailer 10$4,000 AUD
Retailer 8$4,023 AUD
Retailer 3$4,804 AUD
MOH London$6,934 AUD

15 data points across 11 retailers

10 retailers$1,253 AUD to $6,934 AUD

A
Cheapest Retailer
-
$1,253 AUD
$880 USD
B+
Retailer 2
-
$1,851 AUD
$1,300 USD
View
B+
Retailer 3
-
$2,013 AUD
$1,414 USD
View
B+
Retailer 4
-
$2,073 AUD
$1,456 USD
View
Final sale: no returns
B+
Retailer 5
-
$2,147 AUD
$1,508 USD
View
Retailer 6
-
$2,147 AUD
$1,508 USD
View
Price last confirmed 19 days ago
B
Retailer 7
-
$3,397 AUD
$2,386 USD
View
B
Retailer 8
-
$4,000 AUD
$2,810 USD
View
B
Retailer 9
-
$4,023 AUD
$2,826 USD
View
Most Expensive
B
MOH London
LG436045603 · Oct 29
$6,934 AUD
£3,835 GBP
View
9 more retailers have this diamond
Prices start from $1,253 AUDSave up to $5,681 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
1.59ct Round
$1,253 AUD