CaratHunter
Plans
Cushion|Natural|GIA

1.51ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 3555303625

Certificate GIA 3555303625

Diamond specifications and retailer prices

From HK$21,216 HKD
As of November 5, 2026
Save HK$25,287 HKD (54%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$46,503 HKD at MOH London · As of November 4, 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 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 3555303625. Listed at 14 retailers as of November 4, 2026, with prices from HK$21,216 to HK$46,503, a HK$25,287 spread on the same certified stone. MOH London lists it at HK$46,503. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3555303625
Dimensions7.82 × 6.01 × 4.00 mm
L/W Ratio1.30
Girdle conditionFaceted
Top View
7.82 mm6.01 mm1.51 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3555303625
Side View
Table 65.0%CrownGirdle: ThickPavilionCulet: NoneDepth 66.6%

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 5
Current: HK$46,503 HKD|Low: HK$21,216 HKD|High: HK$49,270 HKD|Avg: HK$29,474 HKD|-5.6%
MOH London
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 7, 2026
Retailer 5HK$21,216 HKD
Retailer 3HK$21,467 HKD
Retailer 8HK$22,815 HKD
Retailer 10HK$23,230 HKD
Retailer 9HK$23,316 HKD
Retailer 12HK$24,492 HKD
Retailer 4HK$26,036 HKD
Retailer 13HK$28,646 HKD
Retailer 2HK$28,849 HKD
Retailer 6HK$32,463 HKD
Retailer 7HK$34,030 HKD
Retailer 11HK$43,913 HKD
MOH LondonHK$46,503 HKD

34 data points across 13 retailers

14 retailersHK$21,216 HKD to HK$46,503 HKD

A
Cheapest Retailer
-
HK$21,216 HKD
A
Retailer 2
-
HK$21,467 HKD
View
A
Retailer 3
-
HK$22,815 HKD
View
A
Retailer 4
-
HK$23,230 HKD
View
A
Retailer 5
-
HK$23,316 HKD
View
Final sale: no returns
A
Retailer 6
-
HK$24,492 HKD
View
A
Retailer 7
-
HK$26,036 HKD
View
B+
Retailer 8
-
HK$28,646 HKD
View
B+
Retailer 9
-
HK$28,849 HKD
View
B+
Retailer 10
-
HK$29,077 HKD
View
B+
Retailer 11
-
HK$32,463 HKD
View
B+
Retailer 12
-
HK$34,030 HKD
View
B
Retailer 13
-
HK$43,913 HKD
View
Most Expensive
B
MOH London
A225B3F8E · Nov 4
HK$46,503 HKD
£4,672 GBP
View
13 more retailers have this diamond
Prices start from HK$21,216 HKDSave up to HK$25,287 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$21,216 HKD