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Cushion|Natural|GIA

1.51ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 6551130924

Certificate GIA 6551130924

Diamond specifications and retailer prices

From HK$17,587 HKD
As of November 5, 2026
Save HK$14,436 HKD (45%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$32,024 HKD at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551130924. Listed at 12 retailers as of November 5, 2026, with prices from HK$17,587 to HK$32,024, a HK$14,436 spread on the same certified stone. Helzberg Diamonds lists it at HK$32,024. 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551130924
Dimensions6.85 × 6.09 × 4.22 mm
L/W Ratio1.12
Top View
6.85 mm6.09 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551130924
Side View
Table 61.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 69.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: HK$32,024 HKD|Low: HK$17,485 HKD|High: HK$34,006 HKD|Avg: HK$23,310 HKD|-5.8%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 8HK$17,587 HKD
Retailer 2HK$18,300 HKD
Retailer 9HK$18,614 HKD
Retailer 5HK$19,641 HKD
Retailer 7HK$19,915 HKD
Retailer 3HK$20,260 HKD
Retailer 4HK$21,216 HKD
Retailer 12HK$21,921 HKD
Retailer 13HK$22,932 HKD
Retailer 6HK$26,255 HKD
Retailer 10HK$28,371 HKD
Retailer 11HK$31,687 HKD
Helzberg DiamondsHK$32,024 HKD

32 data points across 13 retailers

12 retailersHK$17,587 HKD to HK$32,024 HKD

A
Cheapest Retailer
-
HK$17,587 HKD
A
Retailer 2
-
HK$18,300 HKD
View
A
Retailer 3
-
HK$18,614 HKD
View
A
Retailer 4
-
HK$19,915 HKD
View
A
Retailer 5
-
HK$20,260 HKD
View
A
Retailer 6
-
HK$21,216 HKD
View
A
Retailer 7
-
HK$21,921 HKD
View
A
Retailer 8
-
HK$22,932 HKD
View
A
Retailer 9
-
HK$26,255 HKD
View
B+
Retailer 10
-
HK$28,371 HKD
View
B+
Retailer 11
-
HK$31,687 HKD
View
Most Expensive
B+
Helzberg Diamonds
XZRMLLHHJGPIK · Nov 6
HK$32,024 HKD
$4,086 USD
View
11 more retailers have this diamond
Prices start from HK$17,587 HKDSave up to HK$14,436 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$17,587 HKD