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Round|Lab Grown|IGI

1.59ct K SI1 Round Lab Grown Diamond

EX • K/SI1 • IGI LG436046774

Shape and cutting style on the report: Round brilliant

Certificate IGI LG436046774

Diamond specifications and retailer prices

From $1,411 AUD
As of November 5, 2026
Save $4,127 AUD (75%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $5,539 AUD at MOH London · As of November 5, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436046774 or 436046774. Listed at 10 retailers as of November 5, 2026, with prices from $1,411 to $5,539, a $4,127 spread on the same certified stone. MOH London lists it at $5,539. 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
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.2°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436046774
Dimensions7.65 × 7.68 × 4.48 mm
L/W Ratio1.00
Culet sizePointed
Cert comments
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Top View
7.65 mm7.68 mm1.59 ctK / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG436046774
Side View
Table 58.5%Crown 32.2°Girdle: MediumPavilion 40.3°Culet: NoneDepth 58.4%

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: $5,539 AUD|Low: $1,356 AUD|High: $5,628 AUD|Avg: $2,788 AUD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 5$1,411 AUD
Retailer 6$1,637 AUD
Retailer 8$1,637 AUD
Retailer 2$1,791 AUD
Retailer 3$1,886 AUD
Retailer 9$2,394 AUD
Retailer 7$2,618 AUD
Retailer 4$3,530 AUD
Retailer 10$4,687 AUD
MOH London$5,539 AUD

40 data points across 10 retailers

10 retailers$1,411 AUD to $5,539 AUD

A
Cheapest Retailer
-
$1,411 AUD
A
Retailer 2
-
$1,536 AUD
View
A
Retailer 3
-
$1,637 AUD
View
Retailer 4
-
$1,637 AUD
View
Price last confirmed 25 days ago
A
Retailer 5
-
$1,791 AUD
View
B+
Retailer 6
-
$1,886 AUD
View
B
Retailer 7
-
$2,618 AUD
View
B
Retailer 8
-
$3,070 AUD
View
B
Retailer 9
-
$3,530 AUD
View
Most Expensive
B
MOH London
LG436046774 · Nov 5
$5,539 AUD
£3,053 GBP
View
9 more retailers have this diamond
Prices start from $1,411 AUDSave up to $4,127 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
$1,411 AUD