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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 $496 SGD
$388 USD
As of October 31, 2026
Save $1,663 SGD (77%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,159 SGD 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 $496 to $2,159, a $1,663 spread on the same certified stone. Queensmith lists it at $2,159. 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: $2,159 SGD|Low: $496 SGD|High: $2,322 SGD|Avg: $1,061 SGD|-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 12$496 SGD
Retailer 6$540 SGD
Retailer 2$661 SGD
Retailer 11$674 SGD
Retailer 13$697 SGD
Retailer 10$705 SGD
Retailer 8$777 SGD
Retailer 7$821 SGD
Retailer 9$830 SGD
Retailer 4$1,007 SGD
Retailer 5$1,139 SGD
Retailer 3$1,279 SGD
Queensmith$2,159 SGD

33 data points across 13 retailers

13 retailers$496 SGD to $2,159 SGD

A
Cheapest Retailer
-
$496 SGD
$388 USD
Final sale: no returns
A
Retailer 2
-
$540 SGD
View
A
Retailer 3
-
$661 SGD
£407 GBP
View
A
Retailer 4
-
$674 SGD
£415 GBP
View
A
Retailer 5
-
$697 SGD
$545 USD
View
A
Retailer 6
-
$705 SGD
$552 USD
View
B+
Retailer 7
-
$777 SGD
$608 USD
View
B+
Retailer 8
-
$821 SGD
€612 EUR
View
B+
Retailer 9
-
$830 SGD
ZAR 10,486 ZAR
View
Retailer 10
-
$1,007 SGD
$788 USD
View
Price last confirmed 14 days ago
Retailer 11
-
$1,139 SGD
A$1,370 AUD
View
Price last confirmed 28 days ago
Retailer 12
-
$1,279 SGD
£788 GBP
View
Price last confirmed 7 days ago
Most Expensive
B
Queensmith
6555666199 · Oct 28
$2,159 SGD
£1,330 GBP
View
12 more retailers have this diamond
Prices start from $496 SGDSave up to $1,663 SGD

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
$496 SGD