Cushion|Natural|GIA

0.50ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 6555666199

Certificate GIA 6555666199

Diamond specifications and retailer prices

From €347 EUR
$388 USD
As of October 31, 2026
Save €1,165 EUR (77%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €1,512 EUR 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 €347 to €1,512, a €1,165 spread on the same certified stone. Queensmith lists it at €1,512. 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
Color
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: €1,512 EUR|Low: €347 EUR|High: €1,626 EUR|Avg: €743 EUR|-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€347 EUR
Retailer 6€378 EUR
Retailer 2€463 EUR
Retailer 11€472 EUR
Retailer 13€488 EUR
Retailer 10€494 EUR
Retailer 8€544 EUR
Retailer 7€575 EUR
Retailer 9€581 EUR
Retailer 4€705 EUR
Retailer 5€797 EUR
Retailer 3€896 EUR
Queensmith€1,512 EUR

33 data points across 13 retailers

13 retailers€347 EUR to €1,512 EUR

A
Cheapest Retailer
-
€347 EUR
$388 USD
Final sale: no returns
A
Retailer 2
-
€378 EUR
SGD 571 SGD
View
A
Retailer 3
-
€463 EUR
£407 GBP
View
A
Retailer 4
-
€472 EUR
£415 GBP
View
A
Retailer 5
-
€488 EUR
$545 USD
View
A
Retailer 6
-
€494 EUR
$552 USD
View
B+
Retailer 7
-
€544 EUR
$608 USD
View
B+
Retailer 8
-
€575 EUR
View
B+
Retailer 9
-
€581 EUR
ZAR 10,486 ZAR
View
Retailer 10
-
€705 EUR
$788 USD
View
Price last confirmed 13 days ago
Retailer 11
-
€797 EUR
A$1,370 AUD
View
Price last confirmed 28 days ago
Retailer 12
-
€896 EUR
£788 GBP
View
Price last confirmed 7 days ago
Most Expensive
B
Queensmith
6555666199 · Oct 28
€1,512 EUR
£1,330 GBP
View
12 more retailers have this diamond
Prices start from €347 EURSave up to €1,165 EUR

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
€347 EUR