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Cushion|Natural|GIA

1.51ct H SI1 Cushion Natural Diamond

EX • H/SI1 • GIA 6545505052

Certificate GIA 6545505052

Diamond specifications and retailer prices

From HK$29,768 HKD
$3,794 USD
As of November 2, 2026
Save HK$32,480 HKD (52%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: HK$62,249 HKD at MOH London · As of November 1, 2026
View at MOH London

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded H 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 6545505052. Listed at 20 retailers as of November 1, 2026, with prices from HK$29,768 to HK$62,249, a HK$32,480 spread on the same certified stone. MOH London lists it at HK$62,249. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 6545505052
Dimensions6.54 × 6.46 × 4.50 mm
L/W Ratio1.01
Top View
6.54 mm6.46 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6545505052
Side View
Table 62.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 69.6%

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 2
Current: HK$62,249 HKD|Low: HK$29,768 HKD|High: HK$62,996 HKD|Avg: HK$40,512 HKD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 9HK$29,768 HKD
Retailer 7HK$31,118 HKD
Retailer 10HK$33,503 HKD
Retailer 8HK$35,402 HKD
Retailer 11HK$37,434 HKD
Retailer 4HK$38,863 HKD
Retailer 6HK$39,397 HKD
Retailer 3HK$43,138 HKD
Retailer 2HK$44,216 HKD
Retailer 5HK$48,038 HKD
MOH LondonHK$62,249 HKD

43 data points across 11 retailers

20 retailersHK$29,768 HKD to HK$62,249 HKD

A
Cheapest Retailer
-
HK$29,768 HKD
$3,794 USD
A
Retailer 2
-
HK$30,537 HKD
$3,892 USD
View
A
Retailer 3
-
HK$30,882 HKD
$3,936 USD
View
A
Retailer 4
-
HK$31,118 HKD
$3,966 USD
View
Final sale: no returns
A
Retailer 5
-
HK$31,237 HKD
$3,981 USD
View
A
Retailer 6
-
HK$33,431 HKD
CA$5,918 CAD
View
A
Retailer 7
-
HK$33,503 HKD
$4,270 USD
View
A
Retailer 8
-
HK$34,452 HKD
$4,391 USD
View
B+
Retailer 9
-
HK$35,402 HKD
$4,512 USD
View
B+
Retailer 10
-
HK$35,990 HKD
$4,587 USD
View
B+
Retailer 11
-
HK$37,277 HKD
$4,751 USD
View
B+
Retailer 12
-
HK$37,434 HKD
$4,771 USD
View
B+
Retailer 13
-
HK$38,863 HKD
£3,900 GBP
View
Retailer 14
-
HK$39,397 HKD
A$7,725 AUD
View
Price last confirmed 24 days ago
Retailer 15
-
HK$43,138 HKD
$5,498 USD
View
Price last confirmed 10 days ago
B+
Retailer 16
-
HK$44,216 HKD
€5,367 EUR
View
B+
Retailer 17
-
HK$44,990 HKD
$5,734 USD
View
B
Retailer 18
-
HK$48,038 HKD
ZAR 98,910 ZAR
View
B
Retailer 19
-
HK$56,560 HKD
$7,209 USD
View
Price last confirmed 7 days ago
Most Expensive
B
MOH London
8012FE3A7 · Nov 1
HK$62,249 HKD
£6,247 GBP
View
19 more retailers have this diamond
Prices start from HK$29,768 HKDSave up to HK$32,480 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$29,768 HKD