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Cushion|Natural|GIA

1.50ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 1517368138

Certificate GIA 1517368138

Diamond specifications and retailer prices

From HK$44,636 HKD
$5,689 USD
As of November 2, 2026
Save HK$38,966 HKD (47%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: HK$83,603 HKD at MOH London · As of November 1, 2026
View at MOH London

About this 1.5ct natural cushion diamond

This 1.5ct natural cushion sits in the one-and-a-half to two carat band, graded I 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 1517368138. Listed at 28 retailers as of November 1, 2026, with prices from HK$44,636 to HK$83,603, a HK$38,966 spread on the same certified stone. MOH London lists it at HK$83,603. 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

1.50
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.9°
Pavilion angle34.91°
OriginNatural
Grading LabGIA
CertificateGIA 1517368138
Dimensions7.47 × 5.79 × 4.04 mm
L/W Ratio1.29
Key to symbols
Crystal, Needle
Top View
7.47 mm5.79 mm1.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1517368138
Side View
Table 65.0%Crown 41.9°Girdle: THK-VTKPavilion 34.91°Culet: NoneDepth 69.7%

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 2
Current: HK$83,603 HKD|Low: HK$44,636 HKD|High: HK$84,609 HKD|Avg: HK$59,537 HKD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 10HK$44,636 HKD
Retailer 8HK$46,920 HKD
Retailer 9HK$47,846 HKD
Retailer 6HK$50,168 HKD
Retailer 4HK$56,558 HKD
Retailer 2HK$56,919 HKD
Retailer 7HK$57,835 HKD
Retailer 3HK$61,920 HKD
Retailer 5HK$73,703 HKD
MOH LondonHK$83,603 HKD

44 data points across 10 retailers

28 retailersHK$44,636 HKD to HK$83,603 HKD

B+
Cheapest Retailer
-
HK$44,636 HKD
$5,689 USD
B+
Retailer 2
-
HK$46,465 HKD
$5,922 USD
View
B+
Retailer 3
-
HK$46,600 HKD
A$9,137 AUD
View
Retailer 4
-
HK$46,920 HKD
$5,980 USD
View
Price last confirmed 14 days ago
B+
Retailer 5
-
HK$47,390 HKD
$6,040 USD
View
B+
Retailer 6
-
HK$47,846 HKD
$6,098 USD
View
Final sale: no returns
B+
Retailer 7
-
HK$48,046 HKD
$6,124 USD
View
B+
Retailer 8
-
HK$49,826 HKD
CA$8,820 CAD
View
B+
Retailer 9
-
HK$50,168 HKD
$6,394 USD
View
B+
Retailer 10
-
HK$50,333 HKD
$6,415 USD
View
B+
Retailer 11
-
HK$51,047 HKD
$6,506 USD
View
B
Retailer 12
-
HK$53,441 HKD
$6,811 USD
View
B
Retailer 13
-
HK$55,362 HKD
$7,056 USD
View
B
Retailer 14
-
HK$56,296 HKD
$7,175 USD
View
B
Retailer 15
-
HK$56,558 HKD
£5,676 GBP
View
B
Retailer 16
-
HK$56,919 HKD
£5,712 GBP
View
B
Retailer 17
-
HK$57,339 HKD
$7,308 USD
View
Retailer 18
-
HK$57,835 HKD
A$11,340 AUD
View
Price last confirmed 11 days ago
B
Retailer 19
-
HK$58,690 HKD
A$11,508 AUD
View
B
Retailer 20
-
HK$60,258 HKD
$7,680 USD
View
B
Retailer 21
-
HK$60,258 HKD
$7,680 USD
View
B
Retailer 22
-
HK$60,463 HKD
$7,706 USD
View
B
Retailer 23
-
HK$61,920 HKD
€7,516 EUR
View
B
Retailer 24
-
HK$62,298 HKD
$7,940 USD
View
B
Retailer 25
-
HK$66,041 HKD
$8,417 USD
View
Retailer 26
-
HK$66,096 HKD
$8,424 USD
View
Price last confirmed 10 days ago
B
Retailer 27
-
HK$73,703 HKD
ZAR 151,755 ZAR
View
Most Expensive
B
MOH London
FF8EED978 · Nov 1
HK$83,603 HKD
£8,390 GBP
View
27 more retailers have this diamond
Prices start from HK$44,636 HKDSave up to HK$38,966 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+
1.50ct Cushion
HK$44,636 HKD