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Cushion|Lab Grown|IGI

0.78ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG685588512

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG685588512

Diamond specifications and retailer prices

From $228 SGD
$178 USD
As of October 28, 2026
Save $1,771 SGD (89%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,999 SGD at Do Amore Diamonds · As of October 28, 2026
View at Do Amore Diamonds

About this 0.78ct lab-grown cushion diamond

This 0.78ct lab-grown cushion sits in the just-under-one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG685588512 or 685588512. Listed at 10 retailers as of October 28, 2026, with prices from $228 to $1,999, a $1,771 spread on the same certified stone. Do Amore Diamonds lists it at $1,999. 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

0.78
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle37.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG685588512
Dimensions6.18 × 4.91 × 3.32 mm
L/W Ratio1.26
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
6.18 mm4.91 mm0.78 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG685588512
Side View
Table 60.0%Crown 36.6°Girdle: MED-STKPavilion 37.2°Culet: NoneDepth 67.6%

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: Oct 28
Current: $1,999 SGD|Low: $161 SGD|High: $1,999 SGD|Avg: $808 SGD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 6$228 SGD
Retailer 4$252 SGD
Retailer 7$343 SGD
Retailer 5$385 SGD
Retailer 2$498 SGD
Retailer 3$1,304 SGD
Retailer 8$1,364 SGD
Do Amore Diamonds$1,999 SGD

39 data points across 8 retailers

10 retailers$228 SGD to $1,999 SGD

A
Cheapest Retailer
-
$228 SGD
$178 USD
Final sale: no returns
A
Retailer 2
-
$252 SGD
$197 USD
View
A
Retailer 3
-
$343 SGD
$268 USD
View
A
Retailer 4
-
$385 SGD
$300 USD
View
B+
Retailer 5
-
$498 SGD
£306 GBP
View
B
Retailer 6
-
$1,118 SGD
$872 USD
View
B
Retailer 7
-
$1,304 SGD
£801 GBP
View
B
Retailer 8
-
$1,364 SGD
$1,064 USD
View
B
Retailer 9
-
$1,948 SGD
$1,520 USD
View
Most Expensive
B
Do Amore Diamonds
23-685588512 · Oct 28
$1,999 SGD
$1,560 USD
View
9 more retailers have this diamond
Prices start from $228 SGDSave up to $1,771 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
0.78ct Cushion
$228 SGD