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Cushion|Natural|GIA

1.57ct E SI1 Cushion Natural Diamond

EX • E/SI1 • GIA 1

Certificate GIA 1

Diamond specifications and retailer prices

From $12,271 SGD
$9,599 USD
As of October 30, 2026
Save $3,205 SGD (21%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $15,476 SGD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 1.57ct natural cushion diamond

This 1.57ct natural 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 stated by the retailer rather than the lab and certified by GIA. Listed at 3 retailers as of October 30, 2026, with prices from $12,271 to $15,476, a $3,205 spread on the same certified stone. Blue Nile lists it at $15,476. 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

1.57
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1
Dimensions6.82 × 6.38 × 4.31 mm
L/W Ratio1.07
Top View
6.82 mm6.38 mm1.57 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1
Side View
Table 58.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 67.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $15,476 SGD|Low: $12,126 SGD|High: $15,476 SGD|Avg: $13,620 SGD
Blue Nile
Retailer 2
Retailer 3
September 23, 2026
Retailer 2$12,271 SGD
Retailer 3$13,329 SGD
Blue Nile$15,476 SGD

3 data points across 3 retailers

3 retailers$12,271 SGD to $15,476 SGD

B+
Cheapest Retailer
-
$12,271 SGD
$9,599 USD
B
Retailer 2
-
$13,329 SGD
$10,426 USD
View
Most Expensive
B
Blue Nile
285145 · Oct 31
$15,476 SGD
$12,106 USD
View
2 more retailers have this diamond
Prices start from $12,271 SGDSave up to $3,205 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.

B+
1.57ct Cushion
$12,271 SGD