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Cushion|Natural|GIA

1.51ct K SI1 Cushion Natural Diamond

ID • K/SI1 • GIA 2557249050

Certificate GIA 2557249050

Diamond specifications and retailer prices

From HK$16,545 HKD
As of November 6, 2026
Save HK$2,600 HKD (14%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: HK$19,145 HKD at Michael Trio · As of November 6, 2026
View at Michael Trio

About this 1.51ct natural cushion diamond

This 1.51ct 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 2557249050. Listed at 3 retailers as of November 6, 2026, with prices from HK$16,545 to HK$19,145, a HK$2,600 spread on the same certified stone. Michael Trio lists it at HK$19,145. 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

1.51
Carat
K
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557249050
Dimensions7.24 × 6.05 × 4.04 mm
L/W Ratio1.20
Top View
7.24 mm6.05 mm1.51 ctK / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557249050
Side View
Table 65.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 66.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: HK$19,145 HKD|Low: HK$16,545 HKD|High: HK$21,296 HKD|Avg: HK$18,411 HKD|-10.1%
Michael Trio
Retailer 2
Retailer 3
October 17, 2026
Retailer 2HK$16,545 HKD
Retailer 3HK$16,819 HKD
Michael TrioHK$19,145 HKD

7 data points across 3 retailers

3 retailersHK$16,545 HKD to HK$19,145 HKD

A
Cheapest Retailer
-
HK$16,545 HKD
A
Retailer 2
-
HK$16,819 HKD
View
Most Expensive
A
Michael Trio
2070962538 · Nov 6
HK$19,145 HKD
SGD 3,301 SGD
View
2 more retailers have this diamond
Prices start from HK$16,545 HKDSave up to HK$2,600 HKD

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
1.51ct Cushion
HK$16,545 HKD