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Cushion|Natural|GIA

1.55ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 6452554551

Certificate GIA 6452554551

Diamond specifications and retailer prices

From HK$34,335 HKD
$4,376 USD
As of November 1, 2026
Save HK$34,879 HKD (50%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: HK$69,214 HKD at MOH London · As of November 2, 2026
View at MOH London

About this 1.55ct natural cushion diamond

This 1.55ct 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 6452554551. Listed at 17 retailers as of November 1, 2026, with prices from HK$34,335 to HK$69,214, a HK$34,879 spread on the same certified stone. MOH London lists it at HK$69,214. 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

1.55
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle38.3°
OriginNatural
Grading LabGIA
CertificateGIA 6452554551
Dimensions6.70 × 6.49 × 4.49 mm
L/W Ratio1.03
Top View
6.70 mm6.49 mm1.55 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6452554551
Side View
Table 59.0%Crown 36.3°Girdle: 3.4Pavilion 38.3°Culet: NoneDepth 69.1%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: HK$69,214 HKD|Low: HK$34,335 HKD|High: HK$70,041 HKD|Avg: HK$45,351 HKD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 3, 2026
Retailer 6HK$34,335 HKD
Retailer 7HK$34,876 HKD
Retailer 9HK$36,335 HKD
Retailer 8HK$39,364 HKD
Retailer 3HK$41,809 HKD
Retailer 2HK$42,397 HKD
Retailer 10HK$43,524 HKD
Retailer 4HK$46,390 HKD
Retailer 5HK$53,414 HKD
MOH LondonHK$69,214 HKD

36 data points across 10 retailers

17 retailersHK$34,335 HKD to HK$69,214 HKD

B+
Cheapest Retailer
-
HK$34,335 HKD
$4,376 USD
B+
Retailer 2
-
HK$34,876 HKD
$4,445 USD
View
B
Retailer 3
-
HK$36,335 HKD
$4,631 USD
View
Final sale: no returns
B
Retailer 4
-
HK$36,979 HKD
$4,713 USD
View
B
Retailer 5
-
HK$37,034 HKD
$4,720 USD
View
B+
Retailer 6
-
HK$39,364 HKD
$5,017 USD
View
B
Retailer 7
-
HK$41,404 HKD
$5,277 USD
View
B+
Retailer 8
-
HK$41,809 HKD
£4,196 GBP
View
B
Retailer 9
-
HK$42,397 HKD
£4,255 GBP
View
Retailer 10
-
HK$43,524 HKD
A$8,534 AUD
View
Price last confirmed 24 days ago
B
Retailer 11
-
HK$44,095 HKD
$5,620 USD
View
B
Retailer 12
-
HK$44,095 HKD
$5,620 USD
View
B
Retailer 13
-
HK$45,586 HKD
$5,810 USD
View
B
Retailer 14
-
HK$46,390 HKD
€5,631 EUR
View
Retailer 15
-
HK$47,948 HKD
$6,111 USD
View
Price last confirmed 11 days ago
B
Retailer 16
-
HK$53,414 HKD
ZAR 109,980 ZAR
View
Most Expensive
B
MOH London
865F3525F · Nov 2
HK$69,214 HKD
£6,946 GBP
View
16 more retailers have this diamond
Prices start from HK$34,335 HKDSave up to HK$34,879 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.

B+
1.55ct Cushion
HK$34,335 HKD