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Cushion|Natural|GIA

0.50ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 6555666199

Certificate GIA 6555666199

Diamond specifications and retailer prices

From HK$3,044 HKD
$388 USD
As of October 31, 2026
Save HK$10,208 HKD (77%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$13,252 HKD at Queensmith · As of October 28, 2026
View at Queensmith

About this 0.5ct natural cushion diamond

This 0.5ct 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 6555666199. Listed at 13 retailers as of October 28, 2026, with prices from HK$3,044 to HK$13,252, a HK$10,208 spread on the same certified stone. Queensmith lists it at HK$13,252. 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

0.50
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555666199
Dimensions4.67 × 4.70 × 3.16 mm
L/W Ratio1.01
Top View
4.67 mm4.70 mm0.50 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555666199
Side View
Table 62.0%CrownGirdlePavilionCulet: NoneDepth 67.7%

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: Oct 31
Current: HK$13,252 HKD|Low: HK$3,044 HKD|High: HK$14,249 HKD|Avg: HK$6,513 HKD|-4.0%
Queensmith
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 1, 2026
Retailer 12HK$3,044 HKD
Retailer 6HK$3,315 HKD
Retailer 2HK$4,054 HKD
Retailer 11HK$4,135 HKD
Retailer 13HK$4,276 HKD
Retailer 10HK$4,327 HKD
Retailer 8HK$4,770 HKD
Retailer 7HK$5,042 HKD
Retailer 9HK$5,092 HKD
Retailer 4HK$6,182 HKD
Retailer 5HK$6,988 HKD
Retailer 3HK$7,852 HKD
QueensmithHK$13,252 HKD

33 data points across 13 retailers

13 retailersHK$3,044 HKD to HK$13,252 HKD

A
Cheapest Retailer
-
HK$3,044 HKD
$388 USD
Final sale: no returns
A
Retailer 2
-
HK$3,315 HKD
SGD 571 SGD
View
A
Retailer 3
-
HK$4,054 HKD
£407 GBP
View
A
Retailer 4
-
HK$4,135 HKD
£415 GBP
View
A
Retailer 5
-
HK$4,276 HKD
$545 USD
View
A
Retailer 6
-
HK$4,327 HKD
$552 USD
View
B+
Retailer 7
-
HK$4,770 HKD
$608 USD
View
B+
Retailer 8
-
HK$5,042 HKD
€612 EUR
View
B+
Retailer 9
-
HK$5,092 HKD
ZAR 10,486 ZAR
View
Retailer 10
-
HK$6,182 HKD
$788 USD
View
Price last confirmed 14 days ago
Retailer 11
-
HK$6,988 HKD
A$1,370 AUD
View
Price last confirmed 28 days ago
Retailer 12
-
HK$7,852 HKD
£788 GBP
View
Price last confirmed 7 days ago
Most Expensive
B
Queensmith
6555666199 · Oct 28
HK$13,252 HKD
£1,330 GBP
View
12 more retailers have this diamond
Prices start from HK$3,044 HKDSave up to HK$10,208 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
0.50ct Cushion
HK$3,044 HKD