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Cushion|Lab Grown|IGI

1.70ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG600340947

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG600340947

Diamond specifications and retailer prices

From $297 SGD
$232 USD
As of October 28, 2026
Save $2,023 SGD (87%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,320 SGD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.7ct lab-grown cushion diamond

This 1.7ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG600340947 or 600340947. Listed at 12 retailers as of October 28, 2026, with prices from $297 to $2,320, a $2,023 spread on the same certified stone. Brilliant Earth lists it at $2,320. 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

1.70
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle32.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG600340947
Dimensions7.30 × 6.55 × 4.31 mm
L/W Ratio1.11
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.30 mm6.55 mm1.70 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG600340947
Side View
Table 59.0%Crown 35°Girdle: STK-THKPavilion 32.2°Culet: NoneDepth 65.8%

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: Oct 28
Current: $424 SGD|Low: $297 SGD|High: $1,561 SGD|Avg: $797 SGD|-1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 9$297 SGD
Retailer 10$377 SGD
Retailer 1$424 SGD
Retailer 7$446 SGD
Retailer 5$608 SGD
Retailer 11$668 SGD
Retailer 12$713 SGD
Retailer 4$886 SGD
Retailer 2$1,073 SGD
Retailer 3$1,129 SGD
Retailer 6$1,330 SGD
Retailer 8$1,561 SGD

40 data points across 12 retailers

12 retailers$297 SGD to $2,320 SGD

A
Cheapest Retailer
-
$297 SGD
$232 USD
Final sale: no returns
A
Retailer 2
-
$377 SGD
HK$2,300 HKD
View
A
Retailer 3
-
$424 SGD
£260 GBP
View
B+
Retailer 4
-
$446 SGD
$348 USD
View
A
Retailer 5
-
$608 SGD
£374 GBP
View
A
Retailer 6
-
$668 SGD
$521 USD
View
A
Retailer 7
-
$713 SGD
$556 USD
View
B+
Retailer 8
-
$1,073 SGD
View
B+
Retailer 9
-
$1,129 SGD
$881 USD
View
B+
Retailer 10
-
$1,330 SGD
£817 GBP
View
B
Retailer 11
-
$1,561 SGD
$1,218 USD
View
Most Expensive
B
Brilliant Earth
22273641A · Oct 29
$2,320 SGD
$1,810 USD
View
11 more retailers have this diamond
Prices start from $297 SGDSave up to $2,023 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
1.70ct Cushion
$297 SGD