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Cushion|Lab Grown|IGI

1.59ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG693553609

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG693553609

Diamond specifications and retailer prices

From $525 SGD
$411 USD
As of November 1, 2026
Save $1,009 SGD (66%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,534 SGD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.59ct lab-grown cushion diamond

This 1.59ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG693553609 or 693553609. Listed at 9 retailers as of October 31, 2026, with prices from $525 to $1,534, a $1,009 spread on the same certified stone. Brilliant Earth lists it at $1,534. 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
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle29.3°
Pavilion angle42.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG693553609
Dimensions8.02 × 6.31 × 4.23 mm
L/W Ratio1.27
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.02 mm6.31 mm1.59 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG693553609
Side View
Table 64.0%Crown 29.3°Girdle: MED-STKPavilion 42.4°Culet: NoneDepth 67.0%

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: $1,534 SGD|Low: $299 SGD|High: $1,739 SGD|Avg: $790 SGD|-11.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 6$299 SGD
Retailer 5$335 SGD
Retailer 7$525 SGD
Retailer 4$526 SGD
Retailer 3$544 SGD
Retailer 9$681 SGD
Retailer 8$730 SGD
Retailer 2$1,400 SGD
Brilliant Earth$1,534 SGD

36 data points across 9 retailers

9 retailers$525 SGD to $1,534 SGD

Retailer 1
-
$299 SGD
$234 USD
Price last confirmed 20 days ago
Retailer 2
-
$335 SGD
£206 GBP
View
Price last confirmed 15 days ago
B+
Retailer 3
-
$525 SGD
$411 USD
View
A
Retailer 4
-
$526 SGD
€392 EUR
View
A
Retailer 5
-
$544 SGD
£335 GBP
View
A
Retailer 6
-
$681 SGD
$533 USD
View
A
Retailer 7
-
$730 SGD
$571 USD
View
B
Retailer 8
-
$1,400 SGD
£862 GBP
View
Most Expensive
B
Brilliant Earth
13584838A · Oct 31
$1,534 SGD
$1,200 USD
View
8 more retailers have this diamond
Prices start from $525 SGDSave up to $1,009 SGD

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 Cushion
$525 SGD