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Cushion|Natural|GIA

0.51ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 6193146707

Certificate GIA 6193146707

Diamond specifications and retailer prices

From HK$7,830 HKD
As of November 5, 2026
Save HK$8,355 HKD (52%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: HK$16,184 HKD at MOH London · As of November 2, 2026
View at MOH London

About this 0.51ct natural cushion diamond

This 0.51ct natural cushion sits in the half to three-quarter carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6193146707. Listed at 9 retailers as of November 2, 2026, with prices from HK$7,830 to HK$16,184, a HK$8,355 spread on the same certified stone. MOH London lists it at HK$16,184. 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
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6193146707
Dimensions4.63 × 4.62 × 3.22 mm
L/W Ratio1.00
Top View
4.63 mm4.62 mm0.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6193146707
Side View
Table 56.0%CrownGirdle: MED-STKPavilionCulet: NDepth 69.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: HK$16,184 HKD|Low: HK$8,002 HKD|High: HK$16,383 HKD|Avg: HK$12,014 HKD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 6HK$8,002 HKD
Retailer 3HK$9,969 HKD
Retailer 5HK$11,552 HKD
Retailer 2HK$12,305 HKD
Retailer 4HK$13,637 HKD
MOH LondonHK$16,184 HKD

45 data points across 6 retailers

9 retailersHK$7,830 HKD to HK$16,184 HKD

B+
Cheapest Retailer
-
HK$7,830 HKD
B+
Retailer 2
-
HK$7,837 HKD
View
Retailer 3
-
HK$8,002 HKD
View
Price last confirmed 9 days ago
B
Retailer 4
-
HK$9,969 HKD
View
Retailer 5
-
HK$11,552 HKD
View
Price last confirmed 33 days ago
B
Retailer 6
-
HK$12,305 HKD
View
B
Retailer 7
-
HK$13,551 HKD
View
B
Retailer 8
-
HK$13,637 HKD
View
Most Expensive
B
MOH London
512FEF2A3 · Nov 2
HK$16,184 HKD
£1,626 GBP
View
8 more retailers have this diamond
Prices start from HK$7,830 HKDSave up to HK$8,355 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+
0.51ct Cushion
HK$7,830 HKD