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Cushion|Natural|GIA

1.80ct I SI2 Cushion Natural Diamond

EX • I/SI2 • GIA 5231920157

Certificate GIA 5231920157

Diamond specifications and retailer prices

From $8,824 SGD
$6,902 USD
As of October 31, 2026
1 retailer carries this diamond
Only listing: $8,824 SGD at Blue Nile
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Blue Nile

About this 1.8ct natural cushion diamond

This 1.8ct natural cushion sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5231920157. Listed at a single retailer as of October 31, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

1.80
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle36.73°
OriginNatural
Grading LabGIA
CertificateGIA 5231920157
Dimensions8.02 × 6.32 × 4.39 mm
L/W Ratio1.27
Top View
8.02 mm6.32 mm1.80 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5231920157
Side View
Table 62.0%CrownGirdle: STK-VTKPavilion 36.73°Culet: NoneDepth 69.4%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 31
Current: $8,824 SGD|Low: $6,284 SGD|High: $9,602 SGD|Avg: $8,019 SGD|-8.1%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 29, 2026
Retailer 3$6,284 SGD
Retailer 5$7,098 SGD
Retailer 2$7,516 SGD
Blue Nile$8,824 SGD
Retailer 4$8,883 SGD
Retailer 6$9,203 SGD

5 data points across 6 retailers

1 retailer

B
Blue Nile
30046476 · Oct 31
$8,824 SGD
$6,902 USD
View

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
1.80ct Cushion
$8,824 SGD