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Cushion|Natural|GIA

3.11ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 2557313921

Certificate GIA 2557313921

Diamond specifications and retailer prices

From HK$192,863 HKD
As of November 6, 2026
Save HK$106,399 HKD (36%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: HK$299,262 HKD at MOH London · As of November 2, 2026
View at MOH London

About this 3.11ct natural cushion diamond

This 3.11ct natural cushion sits in the three to five 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 2557313921. Listed at 8 retailers as of November 2, 2026, with prices from HK$192,863 to HK$299,262, a HK$106,399 spread on the same certified stone. MOH London lists it at HK$299,262. 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

3.11
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557313921
Dimensions9.76 × 7.56 × 5.09 mm
L/W Ratio1.29
Key to symbols
Crystal, Feather
Top View
9.76 mm7.56 mm3.11 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557313921
Side View
Table 64.0%CrownGirdlePavilionCulet: NoneDepth 67.3%

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$299,262 HKD|Low: HK$190,919 HKD|High: HK$302,865 HKD|Avg: HK$222,213 HKD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 8HK$190,919 HKD
Retailer 4HK$192,863 HKD
Retailer 6HK$196,201 HKD
Retailer 5HK$202,691 HKD
Retailer 7HK$205,810 HKD
Retailer 2HK$231,172 HKD
Retailer 3HK$246,682 HKD
MOH LondonHK$299,262 HKD

44 data points across 8 retailers

8 retailersHK$192,863 HKD to HK$299,262 HKD

Retailer 1
-
HK$190,919 HKD
Price last confirmed 12 days ago
B+
Retailer 2
-
HK$192,863 HKD
View
Retailer 3
-
HK$196,201 HKD
View
Price last confirmed 34 days ago
B+
Retailer 4
-
HK$202,691 HKD
View
Final sale: no returns
B+
Retailer 5
-
HK$205,810 HKD
View
B
Retailer 6
-
HK$231,172 HKD
View
B
Retailer 7
-
HK$246,682 HKD
View
Most Expensive
B
MOH London
20E309C75 · Nov 2
HK$299,262 HKD
£30,066 GBP
View
7 more retailers have this diamond
Prices start from HK$192,863 HKDSave up to HK$106,399 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+
3.11ct Cushion
HK$192,863 HKD