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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 $988 USD
As of November 5, 2026
Save $2,889 USD (75%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $3,877 USD 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 $988 to $3,877, a $2,889 spread on the same certified stone. MOH London lists it at $3,877. 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
Color
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: $3,877 USD|Low: $949 USD|High: $3,940 USD|Avg: $1,953 USD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 5$988 USD
Retailer 6$1,146 USD
Retailer 8$1,146 USD
Retailer 2$1,253 USD
Retailer 3$1,320 USD
Retailer 9$1,676 USD
Retailer 7$1,833 USD
Retailer 4$2,471 USD
Retailer 10$3,281 USD
MOH London$3,877 USD

39 data points across 10 retailers

10 retailers$988 USD to $3,877 USD

A
Cheapest Retailer
-
$988 USD
A
Retailer 2
-
$1,075 USD
View
A
Retailer 3
-
$1,146 USD
View
Retailer 4
-
$1,146 USD
View
Price last confirmed 25 days ago
A
Retailer 5
-
$1,253 USD
View
B+
Retailer 6
-
$1,320 USD
View
B
Retailer 7
-
$1,833 USD
View
B
Retailer 8
-
$2,149 USD
View
B
Retailer 9
-
$2,471 USD
View
Most Expensive
B
MOH London
LG436046774 · Nov 5
$3,877 USD
£3,053 GBP
View
9 more retailers have this diamond
Prices start from $988 USDSave up to $2,889 USD

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
$988 USD