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Cushion|Natural|GIA

0.51ct G SI1 Cushion Natural Diamond

EX • G/SI1 • GIA 1545558858

Certificate GIA 1545558858

Diamond specifications and retailer prices

From HK$3,997 HKD
As of November 6, 2026
Save HK$376 HKD (9%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: HK$4,373 HKD at Fonder Diamond · As of November 5, 2026
View at Fonder Diamond

About this 0.51ct natural cushion diamond

This 0.51ct natural cushion sits in the half to three-quarter carat band, graded G 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 1545558858. Listed at 2 retailers as of November 5, 2026, with a relatively tight 9% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

0.51
Carat
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Pavilion angle41.1°
OriginNatural
Grading LabGIA
CertificateGIA 1545558858
Dimensions4.68 × 4.66 × 3.12 mm
L/W Ratio1.00
Girdle conditionFaceted
Top View
4.68 mm4.66 mm0.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1545558858
Side View
Table 65.0%CrownGirdle: STK-VTKPavilion 41.1°Culet: NoneDepth 66.9%

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 6
Current: HK$4,373 HKD|Low: HK$3,519 HKD|High: HK$6,975 HKD|Avg: HK$4,983 HKD|+0.3%
Fonder Diamond
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 5, 2026
Retailer 5HK$3,519 HKD
Retailer 18HK$3,527 HKD
Retailer 6HK$3,997 HKD
Retailer 13HK$4,013 HKD
Retailer 14HK$4,209 HKD
Fonder DiamondHK$4,373 HKD
Retailer 19HK$4,608 HKD
Retailer 17HK$4,648 HKD
Retailer 8HK$4,859 HKD
Retailer 9HK$4,859 HKD
Retailer 7HK$5,016 HKD
Retailer 16HK$5,133 HKD
Retailer 2HK$5,267 HKD
Retailer 15HK$5,392 HKD
Retailer 3HK$5,721 HKD
Retailer 11HK$6,090 HKD
Retailer 10HK$6,215 HKD
Retailer 12HK$6,262 HKD
Retailer 4HK$6,975 HKD

6 data points across 19 retailers

2 retailersHK$3,997 HKD to HK$4,373 HKD

A
Cheapest Retailer
-
HK$3,997 HKD
Most Expensive
B+
Fonder Diamond
636701768 · Nov 5
HK$4,373 HKD
SGD 754 SGD
View
1 more retailer has this diamond
Prices start from HK$3,997 HKDSave up to HK$376 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
0.51ct Cushion
HK$3,997 HKD