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Cushion|Natural|GIA

3.51ct H SI1 Cushion Natural Diamond

VG • H/SI1 • GIA 3555137190

Certificate GIA 3555137190

Diamond specifications and retailer prices

From HK$257,318 HKD
As of November 6, 2026
Save HK$219,704 HKD (46%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: HK$477,021 HKD at MOH London · As of November 4, 2026
View at MOH London

About this 3.51ct natural cushion diamond

This 3.51ct natural cushion sits in the three to five carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 3555137190. Listed at 11 retailers as of November 4, 2026, with prices from HK$257,318 to HK$477,021, a HK$219,704 spread on the same certified stone. MOH London lists it at HK$477,021. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

3.51
Carat
H
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.4°
Pavilion angle55.6°
OriginNatural
Grading LabGIA
CertificateGIA 3555137190
Dimensions10.14 × 8.17 × 5.56 mm
L/W Ratio1.24
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
10.14 mm8.17 mm3.51 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3555137190
Side View
Table 69.0%Crown 32.4°Girdle: THK-VTKPavilion 55.6°Culet: NoneDepth 68.0%

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 6
Current: HK$477,021 HKD|Low: HK$254,010 HKD|High: HK$478,932 HKD|Avg: HK$323,717 HKD|-0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 4, 2026
Retailer 4HK$254,010 HKD
Retailer 3HK$257,318 HKD
Retailer 10HK$281,598 HKD
Retailer 11HK$304,381 HKD
Retailer 12HK$332,196 HKD
Retailer 7HK$333,716 HKD
Retailer 9HK$333,716 HKD
Retailer 8HK$344,846 HKD
Retailer 2HK$351,664 HKD
Retailer 6HK$369,972 HKD
Retailer 5HK$370,051 HKD
MOH LondonHK$477,021 HKD

28 data points across 12 retailers

11 retailersHK$257,318 HKD to HK$477,021 HKD

B+
Cheapest Retailer
-
HK$257,318 HKD
B+
Retailer 2
-
HK$281,598 HKD
View
B+
Retailer 3
-
HK$304,381 HKD
View
B
Retailer 4
-
HK$332,196 HKD
View
B
Retailer 5
-
HK$333,716 HKD
View
B
Retailer 6
-
HK$333,716 HKD
View
B
Retailer 7
-
HK$344,846 HKD
View
B
Retailer 8
-
HK$351,664 HKD
View
B
Retailer 9
-
HK$369,972 HKD
View
B
Retailer 10
-
HK$370,051 HKD
View
Most Expensive
B
MOH London
74892BBF9 · Nov 4
HK$477,021 HKD
£47,925 GBP
View
10 more retailers have this diamond
Prices start from HK$257,318 HKDSave up to HK$219,704 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+
3.51ct Cushion
HK$257,318 HKD