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Cushion|Natural|GIA

1.53ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 5231659395

Certificate GIA 5231659395

Diamond specifications and retailer prices

From HK$51,021 HKD
$6,510 USD
As of November 5, 2026
1 retailer carries this diamond
Only listing: HK$51,021 HKD 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 1.53ct natural cushion diamond

This 1.53ct natural cushion sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5231659395. Listed at a single retailer as of November 5, 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

1.53
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5231659395
Dimensions7.55 × 6.55 × 4.34 mm
L/W Ratio1.15
Culet sizeNone
Top View
7.55 mm6.55 mm1.53 ctK / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5231659395
Side View
Table 65.0%CrownGirdle: MediumPavilionCulet: NoneDepth 66.2%

Caratlytics Score

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C
Average
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Price History

Last verified: Nov 5
Current: HK$51,021 HKD|Low: HK$46,868 HKD|High: HK$51,021 HKD|Avg: HK$48,846 HKD
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
September 26, 2026
Retailer 3HK$46,868 HKD
Retailer 5HK$48,004 HKD
Retailer 4HK$50,018 HKD
Retailer 2HK$50,637 HKD
Blue NileHK$51,021 HKD

9 data points across 5 retailers

1 retailer

C
Blue Nile
27902459 · Nov 5
HK$51,021 HKD
$6,510 USD
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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.

C
1.53ct Cushion
HK$51,021 HKD